Selective copying apparatus

Abstract

Selective copying apparatus wherein selected portions of a source document are copied onto a copy paper at any position on the copy paper and wherein information is deleted or inserted by the user from an input keyboard. A manually-operated portable scanner is used by the operator to scan a selected portion of the document by placing the scanner at the desired line position and moving the scanner across the document. The scanned image is converted into digital data. A copier responds to the digital data and copies the scanned image onto a copy paper at a line position which is also selected by the operator. Thus, the image selected by the operator on the source document is reproduced at a position on the copy paper which is also separately selected by the operator.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to selective copying apparatus and more particularly to apparatus for manually scanning images, storing the images, and reproducing said images at selected positions of a recording device.

2. Description of the Prior Art

Selective copying and editing of printed material is one of the most universally performed functions of individuals who deal with information in books, documents, labels, forms, catalogs, printouts, and drawings. The useful content of the source material is but a small fraction of the total material available. For example, only a paragraph, footnote, single-line equation, or drawing may be all that is needed to be excerpted. At present, most selective copying is done either by hand or by copying a full page in a conventional copier and then cutting out the material required. This "cut-and-paste" operation is time consuming.

Prior attempts have been made to provide portable selective copying apparatus so that it is not necessary to carry source material to a copy machine. In the prior apparatus, a hand-held reading probe is swept across the source material and the portion scanned is transferred to a visible hard-copy printout. An example of such a device is shown in U.S. Pat. No. 3,052,755 which issued to E. Garfield on Sept. 4, 1962. In this patent, a scanning instrument is hand-held and swept over the printed matter to be copied. A light source within the scanner reflects off the printed page. A light-conducting rod picks up the reflecting light and transmits it to a photoelectric cell. The voltage from the photoelectric cell is then transmitted over a cable to a printer. The printer is comprised to a stylus which rides on a strip of electrosensitive paper so that when a voltage is applied to the stylus a mark is made on the paper strip. Thus a printed mark on the page being copied produces a corresponding mark on the paper strip. The amplitude of the sweep of the light source inside the scanner is adjustable for various sized printed letters.

A subsequent U.S. Pat. No. 3,064,078 which issued on Nov. 13, 1962 to E. Garfield discloses a similar apparatus with a different reproducing print head. The reproducing instrument has a mirror which focuses a light beam on the print medium. Light-sensitive paper is used so that printing occurs in response to the light beam. The amplitude of the sweep of the reproducing mirror is adjustable to correspond to the amplitude of the sweep of the light source within the selective scanner.

A parallel version of the above patent is described in U.S. Pat. No. 3,318,996 which issued to E. Garfield et al on May 9, 1967. This patent uses light-conducting fiber rods arranged in a vertical column over the printed matter. The transmitting ends of the rods are placed adjacent to photocells, one photocell for each rod. The parallel outputs of the photocells are transmitted to the printer which has a like number of stylii in parallel across a paper strip. Electrostatic paper is used for printing information on the strip corresponding to that scanned by the rods. Synchronization of the paper strip which is moved past the print elements is accomplished by a roller on the scanner which rotates as the scanner is swept across the page. Futhermore, a mask is provided to mask out the number of rods to thus adjust the amount of the document scanned to accommodate different height printed characters.

In all of the above patents, printing is accomplished on a paper strip which is able to print only one continuous line of matter which is scanned. It is still necessary for a user to cut and paste in oder to edit the scanned material, even though the material is selectively scanned. Thus, if the user wants to arrange the scanned information at different places on a printed document, it must first be cut from the paper strip and arranged on the printed page. While these patents provide means for selectively copying, they do not provide means for selectively reproducing the copied material anywhere on a printed page.

A limited form of editing is provided in U.S. Pat. No. 3,512,129 which issued to E. Garfield on May 12, 1970. In this apparatus, character recognition is provided which is connected to the scanning device. A scanned character is recognized as a particular letter and is converted to machine-readable form, that is, to a standard computer code such as ASCII. A typewriter is connected to receive this code and to type out the information in printed form. This apparatus will only prepare a typewritten document and will only reproduce selected portions of typewritten documents of a type font which can be recognized by the character recognition circuits. For example, in order for the character recognition circuits to read a type font which is different from that produced by the typewriter itself, it is necessary to have character recognition circuits for each such type font to be recognized. With the large number of type fonts in use today, it is readily seen that an enormously complex character recognition unit is necessary in order to render this apparatus useful in a practical sense.

SUMMARY OF THE INVENTION

It is a primary object of this invention to provide a selective copying system wherein selected portions of a source document may be copied by a user onto any selected position of a copy paper and wherein new material may be added by the user from an inputer source.

It is also an object of this invention to provide a selective copier wherein any font desired by the user can be entered into the control circuits so that a type font which is compatible with the type font of the material being selectively copied can be inserted by the operator onto the output copy.

It is also an object of this invention to provide a selective copying apparatus having editing and format control wherein the sequence, the position on the page, fields to be scanned, the position of the reproduced image on the copy paper, and information entered by means of a keyboard are all under control of the operator.

The above objects are accomplished in accordance with the invention by providing a manually-operated portable scanner which is adapted to scan a selected portion of a source document by placing the scanner at a selected line position on the source document and moving the scanner across the material to be reproduced. The scanned image is converted into digital data. A reproducing element responsive to digital data is provided for copying the scanned image onto a recording device such as a copy paper or a video display screen. Controls are provided for selectively positioning the reproducing element at any vertical or horizontal point on the recording device to thus provide full flexibility in editing.

In accordance with an aspect of the invention, a keyboard input is provided which selects type fonts under control of the operator. The type fonts are read from a storage device and are in a digital form which is compatible with the reproducing element.

The invention has the advantage that the sequence and position of the information copied on the displayed or printed page is fully controllable by the operator. Furthermore, information can be entered by a keyboard and reproduced at any position on the display screen or copy paper and in a type font which is easily changed to be compatible with the type font of the information in the source document.

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention as illustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an overall block diagram of a selective scanning and copying system comprising a first embodiment of the present invention;

FIG. 2 is a more detailed block diagram of the print head and control logic of FIG. 1;

FIG. 3 is a more detailed block diagram of the camera logic block of FIG. 1; and

FIG. 4 is a more detailed diagram of the keyboard and control module block of FIG. 1.

FIG. 5 is an overall block diagram of a selective scanning and copying system comprising a second experiment of the present invention; and,

FIGS. 6-8 are a flow chart of microprogramming for the microprocessors shown in FIGS. 1 and 5.

DESCRIPTION OF FIRST EMBODIMENT

Referring now to FIG. 1, an overall block schematic diagram of a selective scanning and copying system comprising a first embodiment of the invention is shown. Data transfer between different parts of the system is controlled by a low speed microprocessor 10 connected to a low speed data bus 12 and a high speed microprocessor 14 having a high speed data bus 16. The low speed microprocessor (an Intel 8080 or similar type microprocessor) controls all overall system operations with the exception of the high speed data operations which are controlled by a high speed microprocessor. The high speed microprocessor (comprised of an Intel 3000 family computing elements or similar type microprocessor) operates in the 200 nanosecond range and its function is to control high speed data transfer. It also performs limited arithmetic operations for bit manipulation and data formatting. (Products of Intel Corp. referred to in this specification are described in the Intel 1976 Data Catalog, published by Intel Corp., 3065 Bowers Avenue, Santa Clara, CA 95051. )

A small capacity Intel random-access memory (RAM) 18 is connected to the low speed bus 12. This RAM is used as a variable storage for microprograms and is used to store variable font information under control of the keyboard.

An Intel read-only memory (ROM1) 20 stores the microprogram for the low speed microprocessor and also contains fixed font information for a standard character set.

A keyboard and control module 22 contains a typewriter keyboard, switches, and tab sets to allow an operator to initiate operations, input data, and control system operation.

Operation control lines 24 are provided to the low speed microprocessor and control lines 26 are provided from the low speed microrprocessor to the control module 22.

The low speed microrprocessor provides a control bus 30 to control the communication control 32, the print head and control 34, the tape unit 36, the floppy disc 38, and the interprocessor link 40. These units have their data outputs connected to the high speed bus. Furthermore, the interprocessor link 40 has a connection to the low speed bus to provide for data transfers between the two buses under control of the micrprocessors.

Also connected to the high speed bus is a camera 42 which includes an analog-to-digital converter. The camera is a scanning device with a 256 and 512 element photosensor array with a digitizer, such as the type manufactured by Reticon Corp., Sunnyvale, CA 94086. One scan of data output occurs every 0.0025 inches of camera motion. A 4:1 data compression (i.e., a 2:1 compression in both the vertical and horizontal directions) is provided within the camera electronics to match printer resolution. Additional image processing is facilitated by the high density of object sampling.

A RAM buffer 44 is also connected to the high speed bus. This buffer is used for storage of high speed data and is a refresh buffer for the cathode ray tube 46. A read-only memory (ROM2) 48 is provided to store the microprogram for the high speed microprocessor 14.

The communication control 32 is a bidirectional input/output port for communication with external devices. For example, this communication control connects to a standard modem for connection over telephone lines to a computer.

The tape unit 36 provides for the external storage of input/output information such as format information and overflow buffer information from the RAM buffer 44. The tape motion control is provided by the low speed microprocessor, whereas the data input/output is over the high speed bus and is controlled by the high speed processor.

A further auxiliary storage is the floppy disc 38 (a Shugart SA900 or similar type floppy disc) which provides faster access for the same type of information stored in the tape unit 36. It is controlled by the low speed microprocessor and data transfer is controlled by the high speed microprocessor. The interprocessor link 40 allows communication between the low speed microprocessor and the high speed miroprocessor in order to synchronize the various operations.

PRINT HEAD AND CONTROL

Referring now to FIG. 2, the print head and control 34 of FIG. 1 is shown in more detail. A nonimpact print head 60 is provided which employs thermal printing. The print head contains a vertical column of 128 heating elements (tantalum nitride thin film resistor elements on an insulating substrate) on 5 mil centers. The thermal printing head prints characters and pictures on heat-sensitive paper, producing a mosaic of dots, each of which is heated to about 300.degree. C. by pulse-shaped signals. The size of each dot is about 3-4 mils in diameter. (An example of this type of print head is the thermal print head used in the Okifax 600, a facsimile device manufactured by Oki Electric Industry Company, Ltd., Tokyo, Japan.)

Serial print data 35 is supplied over the high speed bus under control of the high speed microprocessor and passes through a serial to parallel converter 58 which generates pulse-shaped signals 59 compatible with the printing elements of the print head 60. The thermal printer makes marks on the print paper in accordance with which of the input lines 59 are energized.

Motion control commands from the low speed processor are supplied over line 49 to synchronization controls 50. The commands are translated into signals to control the X stepping control 50 which causes the print head to move in a horizontal direction, Y stepping control 54 which causes the print head to move in the vertical direction, and paper feed 56 which causes a new sheet of paper to be fed under the print head.

As the print head 60 moves across the paper, a pattern of dots is produced based on the signals 59. Printing occurs with a resolution of 200 dots per inch in the X and Y directions.

This produces high resolution graphics and a typewriter quality alphanumerics in response to character patterns supplied over the print data line 35. Thus the output can be alphanumeric, graphs, pictures, maps, signatures, and other image data.

For example, conventional characters of 5.times.7 dots with one dot spacing between them can be generated, and since the print head is composed of a column of 128 heating elements it is possible to generate multiple rows of 5.times.7 alphanumerics at a time. Since each dot position is individually addressable, any combination of alphanumerics and graphics is possible for the printed output.

CAMERA

Referring now to FIG. 3, the camera logic block 42 of FIG. 1 will be described. A scanner 62 and 256 elements 64 arranged in a vertical column. These elements are scanned in accordance with the scan height adjustment 66 to provide a serial output 68 to a digitizer 70 and a 4:1 compressor 72. The output is scan data which is supplied to the high speed data bus. As the scanner is moved across the image page, a strobe output is generated by the scanner movement sensor 74 every time the camera moves 0.0025 inches. The scanner is provided with control buttons 76, one of which when depressed by the operator activates scanner 62 and indicates that a read operation is taking place.

Another button is provided for carriage return so that the operator can control print head movement directly from the scanner while it is hand held.

Since a selective copying operation is manually performed, the scan increment can vary in size. In oder to prevent an overrun in the RAM buffer 44, the camera 42 is equipped with an indicator light and an audible tone to indicate to the user that the scanning operation must be interrupted until the transfer out of RAM 44 (to the tape unit, printer, etc.) is complete.

Hand-held scanners of the type just described are manufactured by Datacopy Corp., of Palo Alto, Calif.

KEYBOARD AND CONTROL MODULE

Referring now to FIG. 4, the keyboard and operation controls will be described. The keyboard 80 provides a standard typewriter keyboard which outputs data in digital form over the keyboard interface 82. The data is in the form of an ASCII code which is convertible in RAM storage 18 to provide any font output which has been previously stored for each key on the keyboard.

The structure of a suitable keyboard and control module is shown in detail in the description of an off-the-shelf keyboard encoder circuit supplied by National Semiconductor under the part number MM5740 and described in the National Semiconductor 1976 data catalog published by National Semiconductor Corp., 2900 Semiconductor Drive, Santa Clara, California. The keyboard encoder is a complete keyboard interface system capable of encoding 90 single-pole single-throw switch closures into a usable 9-bit code, and provides for a direct TTL/DTL compatibility on data and strobe outputs without the use of any special interface components.

The connections to the keyboard and the pin assignments are shown in the above-referenced data manual. For example, the data strobe output pin 13 required to indicate that valid data has been entered by the keyboard and is ready for acceptance and the TTL compatible clock signal applied to pin 3, are included in the control line 26 shown in FIG. 1 between the low-speed microprocessor and the keyboard and control module. No interface circuitry is necessary since the MM5740 keyboard encoder is compatible with the Intel 8080 TTL logic. Furthermore, the keyboard and control module 22 requires no internal programming.

The clock signal for timing required between the keyboard and control module and the other modules of the system is supplied over the control line 26 from the low-speed microprocessor 10.

The control module operation controls 82 provide the following functions:

Omnispace--a four-way rocker switch provides for spacing either to the left or the right and to space up or down. For example, each left or right space is 0.1 inch and each up/down space is 0.125 inch. Carriage return--returns the print head to the left margin which has been previously set by the margin set. Double activation of this key overrides the left margin and returns the print head to the extreme left edge. Line feed--advances the print head in an amount determined by the value of the scan height adjustment setting on the camera without altering the print paper location. As an alternative, the print paper is moved with respect to the print head by the same amount. Tab--this is a print head advance which moves the print head in tabulated steps. This allows the head to move to various predetermined columns. Top of form--this switch advances the print paper with respect to the print head to set the beginning of a page. Light original--this lowers the video detection threshold to record a faint original image on the document being copied. This remains activated until the next carriage return operation. Expand--this function provides a two-to-one magnification of the original material. Strike--this function provides an overwritten pattern rendering the original print unreadable over a swath determined by the scan height adjustment setting.

CAMERA TO PRINTER OPERATION

As the camera is moved over a line of information to be scanned, the data is placed on the high-speed bus 16 by the scan data output 41. Additionally, every 0.0025 inches of camera movement causes a strobe output on line 43 which is connected to both microprocessors. The low-speed microprocessor in response to the strobe signal synchronizes the movement of the print head shown in FIG. 2. The print head is caused to move in a horizontal direction from a point determined by the margin and tab settings.

The strobe line 43 to the high-speed microprocessor allows the high-speed microprocessor to control the transfer of the scanned data 41 to the RAM buffer 44. The RAM buffer also performs a smoothing operation to match the speed of the camera with the speed of the print head. Print data from the RAM buffer is transferred over the high-speed data bus to the print head and controls 34 over the print data line 35. As shown in FIG. 2, the print data is supplied to a serial-to-parallel converter 58 which energizes outputs 59 to the print head 60. This causes the printer to print a column which corresponds to the information scanned on the source document.

KEYBOARD TO PRINTER OPERATION

Initially, a font pattern for each key of the keyboard 22 is stored in the random-access memory 18. When a key on the keyboard is depressed, a coded representation of the key is transmitted over keyboard interface 82 to the random-access memory 18. The code is used to address RAM 18 and thus select one of the font patterns corresponding to the key depressed and this pattern is outputted to the low-speed bus 12. The font pattern is transferred over the interprocessor link 40 to the high-speed bus 16 and from the high-speed bus into the RAM buffer 44. The high-speed microprocessor then transfers the data from the RAM buffer 44 to the print head and control 34. A strobe signal indicating that the key has been struck is transferred over the operation control line 24 to the low-speed microprocessor 10. The low-speed microprocessor 10 then controls the motion of the print head 34 over the motion control line 30. The low-speed microprocessor synchronizes the entire operation by controlling the high-speed microprocessor over control line 11.

CAMERA TO COMMUNICATION CONTROL OPERATION

The scan data from the camera 42 passes over the scan data line 41 and onto the high-speed bus 16. The high-speed microprocessor compresses the data, and buffers enough data for a tape record into the RAM buffer 44. When a tape record has been accumulated, the data is loaded onto the tape unit 36. The high-speed microprocessor signals the low-speed microprocessor over control line 15 and the low-speed microprocessor establishes communication with the external device over the communication control 32. The tape record is then loaded back into the RAM buffer 44 and from the RAM buffer over the high-speed bus to the communication control where it is transmitted out over the commucation lines. Thus, the high-speed processor controls the overall data flow and compression whereas the low-speed microprocessor controls the establishing of communications and handles the slow-speed tape motion operations.

COMMUNICATION CONTROL TO PRINTER OPERATION

Information received from an external source passes through the communication control 32 and into the high-speed data bus 16. From the high-speed bus, the data is buffered in the RAM buffer 44 under control of the high-speed processor. When a full tape record has been loaded onto the RAM buffer, the high-speed microprocessor transfers the data to the tape unit 36 for temporary storage. At the completion of communication, the tape records stored stored in the tape unit are loaded back into the RAM buffer, expanded if necessary, and transferred from the RAM buffer to the print head and control over the high-speed data bus 16 and the print data line 35. Thus, the high-speed microprocessor controls the data flow and data expansion operation and the slow-speed microprocessor controls the overall operation and tape motion control.

CAMERA TO TAPE UNIT OPERATION

Scan data information received from the camera 42 over the line 41 is passed via the high-speed bus 16 to the RAM buffer 44 under control of the high-speed microprocessor. The high-speed microprocessor signals the low-speed microprocessor 10 that information for tape storage is ready for transfer. The low-speed microprocessor 10 starts the tape unit and data stored in the RAM buffer 44 is transferred via the high-speed bus 16 to the tape unit 36. The high-speed processor 14 having sensed the distance traveled by the camera 42 via the camera control lines 43 indicates to the low-speed processor the length of the data information being transferred. Thus, the tape is moved with respect to the tape recording head by an increment which bears a predetermined relationship to the scan increment of the camera.

As previously described, the camera 42 is equipped with an indicator light and audible tone to indicate to the user that scanning must be interrupted. This prevents an overrun in the RAM buffer 44 which could occur if the data has not yet been transferred to the tape unit.

LOW-SPEED MICROPROCESSOR 10

The Intel 8080 microprocessor is fully described beginning at page 8-3 of the Intel 1976 data catalog. As stated on page 8-3 the system (referred to generically as the MCS-80 Microcomputer System) provides LSI blocks that interface with one another through a standard system bus. This bus corresponds to the low-speed bus 12 shown in FIG. 1. The microprocessor chip has TTL drive capability which makes it fully compatible with the previously described National Semiconductor Keyboard encoder circuit.

The details of how the low-speed microprocessor is interconnected in the system shown in FIG. 1 are given on page 8-6 of the Intel data manual, which includes pin definitions. For example, the low-speed bus 12 connections correspond to pins D7-D0 for data and pins A15-A0 for address information. Data from the keyboard and control module enter the low-speed microprocessor over this data bus. This data bus provides bidirectional communication between the CPU, memory, and I/O devices for instructions and data transfers.

The ROM 20 and RAM 18 shown in FIG. 1 are provided by Intel for use with the 8080.

HIGH-SPEED MICROPROCESSOR 14

The high-speed microprocessor 14 is an Intel 3000 series microcomputer system or the equivalent. Its function is to control high-speed data transfer. The high-speed microprocessor 14 is connected via the high-speed bus to all of the input/output devices, the communication control 32, the print head and control 34, the tape unit 36, the floppy disc 38, the camera 42, and the cathode ray tube display 46. The series 3000 family of computing elements is specifically designed by Intel for high performance applications such as high-speed controllers. The entire component family has been designed to interconnect directly, minimizing the need for ancillary circuitry.

The 3000 series microcomputer system is TTL compatible and therefore is fully compatible with the low-speed microprocessor when the microprocessor is implemented with the Intel 8080 system.

The interconnections for the 3002 central processing unit (CPE) are shown on page 9-14 of the Intel data catalog. A functional block diagram showing the data buses is shown on page 9-15. The CPE provides a two-bit wide slice through a microprogrammed central processor and that therefore for an N-bit wide bus, (N/2) CPEs are wired together. For a standard 8-bit wide bus, four 3002 CPEs are wired together.

On page 9-15 of the Intel data catalog the M-bus and the I-bus inputs are described. The M inputs are arranged to bring data from an external main memory into the CPE. Therefore this is the bus that is used to bring data from the RAM buffer 44 into the CPE. The I-bus inputs are arranged to bring data from an external I/O system into the CPE. This permits a large number of I/O devices to be connected to the I-bus.

The high-speed bus 16 is comprised of the memory data-in lines N0, N1, etc., the data-out lines D0, D1, etc., and, the main memory-address lines A0, A1, etc., for addressing the RAM buffer 44. The I bus provides for an external-device input such as from the low-speed microprocessor over the line 11 corresponding to inputs I0, I1, etc. These lines connect to the D0-D7 lines of the 8080 microprocessor. These two microprocessors are designed to be compatible by Intel.

For data flow in the other direction over line 15 in FIG. 1 information flows from the M and D bus of the 3002 to the D0-D7 bus of the 8080. Information over the line 11 of FIG. 1 is from the memory-address bus A15-A0 and the data bus D7-D0 of the 8080 to the I bus of the 3000. The 3000 series computer is specifically designed to handle high-speed data transfers such as from a high-speed disc or other high-speed real-time I/O devices such as from a high resolution scanning device camera 42.

INTERPROCESSOR LINK 40

The interprocessor link 40 allows communication between the low-speed microprocessor and the high-speed microprocessor in order to synchronize the various operations. The circuitry within this block is supplied by Intel under the part number 3212 multimode latch buffer described on page 9-26 of the above-identified Intel data catalog. A logic diagram is shown on page 9-28 of the Intel data catalog and the bus connections are shown for an 8-bit wide data bus. The control lines corresponding to control line 30 of FIG. 1 are also shown and described by their function and the pin connections.

CATHODE RAY TUBE 46

A suitable cathode ray tube display is described in the Intel data catalog on page 6-22. This device is TTL compatible, and is connected to the Intel 3000 series computer by means of the data bus.

PROGRAMMING FOR THE LOW-SPEED MICROPROCESSOR 10 AND THE HIGH-SPEED MICROPROCESSOR 14

Programming is not necessary in any of the devices shown in FIG. 1 with the exception of the low-speed microprocessor 10 and the high-speed microprocessor 14. All the other blocks are either input/output devices, or memories and these devices are passive, unintelligent devices which require instruction and control from a main programmed computer.

Intel provides a microcomputer development system for supporting product design from program development through prototype debug to production and field test. One such product has been provided for both the MCS-80 (the 8080 microprocessor) and the series 3000 microcomputer systems.

The development system is called the MDS-800 Intellec MDS and is described beginning at page 10-3 of the Intel data catalog. In addition to providing all the necessary control and data transfer circuitry to interface with peripherals, such as CRT, line printer, and PROM programmer, the MDS system includes diagnostic capabilities for user-configured systems. It also includes debug functions such as tracing program flow, single stepping, and examining and altering CPU registers in memory locations.

Intel contemplates the use of its 8080 microprocessor in conjunction with its 3000 series computer as an intelligent controller and the implementation of such a system is supported by the MDS-800 development system. The development of microprograms to perform the functions specified require no more than routine coding. The program described in the flow charts of FIG. 6 through FIG. 7 illustrates a suitable program which can be readily reduced to Intel 8080 microprocessor compatible user's code, by one having ordinary skill in the art. This program flow is described after the following description of a second embodiment of the invention. A source code listing is provided in APPENDIX II and APPENDIX III. This code is in a large language which is compatible with the Texas Instruments TM-990/100 M microcomputer described subsequently with respect to the second embodiment of the invention. One skilled in microprogramming can utilize the code listing to produce a similar code listing compatible with the Intel microprocessor's described with respect to FIG. 1.

DESCRIPTION OF SECOND EMBODIMENT

Referring now to FIG. 5, an overall block schematic diagram of a selective scanning and copying system comprising a second embodiment of the invention is shown. Data transfer between different parts of the system is controlled by a microprocessor 100 which is connected to a data bus, 102. The microprocessor is a TMS-9900, which is part of the TM-990/100 M microcomputer system manufactured by Texas Instruments, Houston, Tex. Other parts of the system include RAM 104, a programmable ROM 106, and serial I/O controller 108. A keyboard and display 110, which is compatible with the microcomputer is Model L-1500, manufactured by Keytronic of Spokane, Wash. This keyboard provides the IBM-3277 interactional terminal with a visual display. The functions described with respect to the keyboard and control module of FIG. 4 are implemented along with other key functions shown in APPENDIX I.

PRINTHEAD AND CONTROL

The printhead and control, 114, is shown in detail in FIG. 2 and has been described previously with respect to that figure. The printhead and control, 114, is attached to a serial I/O interface, 112, which provides the appropriate signal levels to attach to the serial I/O controller of the microcomputer system.

CAMERA CONTROLS

The camera, 116, has been described previously with respect to FIG. 3. A push-to-read switch is located on the camera and is depressed to prepare the camera for scanning images. Scanning is effected by moving the camera from left to right in a continuous motion. If the camera movement is stopped, or text wider than 4.25 inches is scanned, the microprocessor begins a data reduction cycle and displays or prints the processed image.

The camera, 116, is connected to a camera interface and processor, 118, which provides appropriate interfacing to a video bus, 120. The output from the camera signal processor is a serial 512-bit data stream, representing one line scan. The camera interface, 118, collects four scans and then writes this data into a camera buffer memory, 122, which is also connected to the video bus, 120. The data is written into the buffer memory in 4.times.4 bit cells, using 128 write cycles and are temporarily stored in first-in, first-out registers.

VIDEO SUBSYSTEM

The video subsystem is comprised of video raster logic, 126, with interfaces a cathode ray tube (CRT) monitor, 128, with the video bus, 120. Also included is a video-interface-to-microprocessor logic, 130, which matches the signal levels to the TMS-9900 microprocessor-interface-to-video logic, 132. These interfaces are specified by the manufactures of the apparatus. A suitable video subsystem for use with the TMS-9900 microprocessor is the Model 3408 high-resolution graphics terminal manufactured by Data Copy Corporation of Palo Alto, Calif. The Model 3408 comprises four subsystems including a CRT monitor, display generator, TI-9900 microprocessor, and power supply, and is specifically designed to operate in a system as contemplated by applicant's FIG. 5. The image information is stored in a random-access memory, which is part of the display generator, in order to allow for continuous display refresh.

MICROPROCESSOR SUBSYSTEM AND MICROPROGRAMMING

As referenced previously, the microprocessor is a Texas Instruments TMS-9900 contained on a TM-990/100 M microcomputer board. Also included on the board is a PROM, 106, containing 32K bytes of microcode; 512 bytes of random-access memory, RAM, storage, 104, two programmable integral timers, and a serial interface 108, 112.

The programmed microprocessor performs several functions in the system including:

1. Clearing the CRT screen. 2. Setting tabs and margins. 3. Generating displayed characters from keyboard input. 4. Providing a cursor. 5. Processing of camera data to generate actual-size images. The microprocessor programming accomplishes this 16:1 reduction in data using a simple averaging algorithm.

VIDEO BUS TO TMS-9900 BUS INTERFACE

The interface between the video bus, 120, and the TMS-9900 bus, 102, is comprised of two logic blocks, 130 and 132. The microprocessor 100 is the controlling element with the video bus appearing as an I/O port. Sixteen bidirectional address and data lines and seven control lines pass between the two interfaces as specified by the above-mentioned Texas Instruments manufacturer.

The microprocessor accesses a 4.times.4 bit picture element by first sending the row, column, and bank of the designated square. Once row, column, and bank have been established, the microprocessor can either read the data or write new data into the picture element, and the CRT monitor will instantly show any changes in data.

CAMERA-TO-VIDEO OPERATION

The details of the camera operation have been described previously with respect to FIG. 3. The line-scanning operation of the 512 element linear array within the camera, 116, is controlled by camera interface logic, 118. The output from the camera interface logic, 118, is a serial 512-bit data stream representing one line scan. The camera interface, 118, collects four scans and then writes them into the camera buffer memory, 122, in 4.times.4 bit cells using 128 write cycles. The camera interface, 118, also generates the addresses required to write the data into the buffer memory, 122. Once the data is stored in the camera buffer memory, 122, it is available for display on the CRT monitor, 128. The video raster logic, 126, contains a timing circuit which is the source for all the timing signals used by the camera buffer memory, 122, and the CRT, 128. During a memory access by the video raster logic, 126, the camera buffer memory, 122, is read with the resulting data being put into shift registers within the logic, 126. These registers hold image data and cursor information. The data-bit streams are converted to appropriate voltage levels and buffered to drive the video inputs of the CRT monitor, 128. The video raster logic, 126, also generates the synchronization pulses needed by the CRT, 128.

MICROPROGRAMMING

Referring now to FIGS. 6-8, the microprogramming for the preferred embodiment shown in FIG. 1 and for the embodiment shown in FIG. 5 will be described. The programming performs the functions of scanning an arbitrary area on a source document, printing that area anywhere specified on a print paper or video display, and receiving data from a keyboard and outputting the data to a print head or display. The programming also provides for moving the data in X-Y directions on the output device (the printer or video display) including the functions of setting tabs, margins, and selectively changing them. Also included is the function of changing the scan height of the scanner. The embodiment of FIG. 1 is preferred because it employs a high-speed microprocessor, 14, used as a high-speed input/output controller to obtain higher performance with respect to the camera-to-print-head operations. The embodiment of FIG. 5 is functionally identical to the configuration of FIG. 1 with the exception that the high-speed microprocessor controller is not utilized. Therefore, the interprocessor link, 40, shown in FIG. 1 is essentially a short circuit connecting both the high-speed bus and the low-speed bus together. This enables the input/output devices to operate over a single bus, but at a lower speed than would be possible were a high-speed microprocessor control utilized. The net result is a camera-scanning operation which is slower than would be possible with the configuration of FIG. 1. Only the camera and camera buffer memory, 122, run together at high speed on a direct-memory access basis, the data being transferred to the print head and control by means of the video interface to microprocessor data path.

Referring to FIGS. 6, 7, and 8, an overview of the microprogram data flow will now be described. The flow starts on FIG. 6 with the program examining various inputs in the system. If the camera press-to-read button, decision block 150, is activiated the flow proceeds to block 152, which initializes the camera buffer memory, 122, to its beginning and the RAM 104 to the beginning of the print buffer area set aside therein. The flow controls to block 154, which enables the system for camera tachometer controlled data transfer. The flow continues to block 156, which enables the system for printing as data is received from the camera buffer memory, 122. At decision block 158 the omnispace controls (to be described with respect to FIG. 7) are suppressed. At block 160 the keyboard input is suppressed so that the ASCII characters are inhibited. The program flow now proceeds to block 162 and enters an idle loop. In this loop data are transferred from the camera, is converted from serial data to parallel, and the printer prints a column which corresponds to the information scanned on the source document. The flow continues to block 164, in which up to three remaining swathes for the camera scan are printed. The camera buffer is then cleared at block 166 and the flow returns to the initialize step, 168, to initialize to the beginning of the input buffer and the beginning of the print buffer.

While not shown in this flow chart, the microcode of APPENDIX II performs a similar operation to display the scanned data on the CRT.

Referring again to FIG. 6, assume that there is an ASCII input from the keyboard and that therefore the decision out of block 170 is yes. In this event the program controls the reading of a character from the keyboard at block 172. The read-only memory (20 of FIG. 1, or 106 of FIG. 5) converts the ASCII characters to a dot matrix format in block 174. In block 176, a column of the dot matrix is outputted to the print head. In block 178 the column is printed, and in block 180 the programming advances to the next print column and the print head is moved accordingly. At block 182 the loop is repeated until the last print column is printed in which event the program returns to the starting point. A similar operation takes place in the microcode with respect to displaying the information on the CRT monitor.

Referring to FIG. 7, the program flow for the omnispace control will be described. The omnispace control is a four-way rocker switch, or pushbutton switches, which provide for spacing either to the left or to the right, and to space up or down, in order to control independent movement of the print head. A similar operation is performed with respect to the CRT by means of a cursor, which is a movable spot of light that indicates where the next character will be entered. If the omnispace is activated, the decision out of block 184 leads to block 186 which suppresses the press-to-read key. Five possible functions, go home, go left, go right, go up, and go down are represented by the five different flow paths of FIG. 7. If the omnispace key indicates go home at block 188 and the print head is not at the home position, block 190, the program performs a go home subroutine, block 192. If the omnispace key indicates go left at decision block 194 and the print head is not at the left margin, block 196, then the program performs a subroutine which moves the print head one-tenth of an inch to the left, if space is available, block 198. A similar flow occurs if the omnispace button indicates go right at block 200. If the print head is not at the right margin, block 202, then the program enters a subroutine, block 204, to move the print head to the right.

If the omnispace key indicates go up, as represented by decision block 206, and if the print head is not already at the top margin, block 208, then the program enters a subroutine, block 210, to move the print head 0.125 inches up if space is available.

A similar flow occurs if the omnispace button indicates go down, block 212. If the print head is not already at the bottom margin, block 214, the microprogramming enters a subroutine to move the print head down, block 216.

Referring now to FIG. 8, the microprogram flow for interpreting the scan height will be described. The first decision block, 218, determines whether either one of the scan height keys is depressed. If the increase scan height key is depressed, the logic flow is from block 220 to block 222. If the scan height is not at its maximum, the flow proceeds from block 222 to 224, in which case the microprogramming increments the scan height at the printer or at the video display. If the decrease scan height key is depressed, the flow proceeds from block 226 to block 228. If the scan height is not at its minimum height, the output from block 228 proceeds to block 230 in which case the program decrements the scan height. The flow proceeds to block 232 wherein the program displays the scan height at the keyboard output.

A complete microcode listing, which will run on a TM-9900 microprocessor is shown in APPENDIX II. What follows is a brief description of each subroutine used in that microprogram.

POWAON: This is entered at power-on and sets up the scan height increment, the standard band to be displayed, and the standard cursor blink time. Of these, only the displayed bank may be varied by the operator subsequently. The program than flows to TBMRGNRELES.

TBMRGNRELES: This can also be reached by depressing the keyboard key #64 (see APPENDIX I for key assignments) which will effectively reset to power-on conditions everything except the currently displayed bank. The margins and tabs are all released, and the extreme hardware margins are implemented.

Video is initialized here for white-on-black display of input characters (camera images are always black-on-white). Control now drops through to CLEARTN.

CLEARTN: May also be reached by keying #1 on the keyboard. Depending on the status of the reverse video setting, the currently displayed memory bank only is either cleared or set, i.e., darkened or lit. Control then flows to HOME.

HOME: May also be reached by keying #32 on the keyboard. The subroutine to allow subsequent camera motion detection is called on the keyboard. The cursor position is initialized to the upper-left corner of the screen and control drops through to CARETN.

CARETN: May also be reached by keying the carriage return key on the keyboard. The cursor horizontal position is arbitrarily set to the left software margin value. As this carriage return always includes a line feed, control now flows to LINEFEED. Do not confuse this routine with that of camera carriage return.

LINEFEED: May also be reached by keying the index button on the keyboard. The cursor vertical position is decremented by one line (160 mils). If this would be below the bottom of the screen, the cursor is reset to the home position. The cursor vertical position is displayed on the numeric display by calling subroutine CNVTM. Control drops through to SAVECURSE.

SAVECURSE: This point is also reached after completion of any processing for camera input or on completion of any keyboard input. The data at the cursor location (16 spots down and 16 spots to the right) is saved and its complement is saved. The cursor blink time routine is initialized, and control drops through to NOACTION.

NOACTION: This routine continuously tests for keyboard input alternated by tests for camera input. If either occurs, the first action will be to ensure the cursor is replaced by the original data. While neither occurs, a counter counts down the blink time and at time-out calls BLINKURSR to swap the data at the cursor location with its complement. If no camera or keyboard input occurs, this loop will continue indefinitely. If keyboard input occurs, control transfers to ISCHAR. If camera input occurs, control transfers to CAMERIN.

ISCHAR: immediately calls CURSREST to ensure the original data is restored before any modifications are made. The character is then input from the keyboard and tested to see if it is one of the control characters, if so, control transfers to the appropriate routine. If not a control character and if space exists to generate a character in, then subroutine PCHAR is called to generate the character. Following this, if insufficient space exists for another character to the right of the most recent one, then a carriage return and linefeed are generated automatically. Otherwise control is transferred to SAVECURS (defined earlier).

PCHAR: is a subroutine to generate a character. At the current cursor position all characters are 9 bits wide and 16 bits high. Because the 4.times.4 bit cell array is not a submultiple of nine, the bits have to be shifted appropriately depending on the bit address of the cursor currently.

CAMERIN: is reached only from NOACTION (this is not a subroutine) and initially uses CURSREST to ensure the cursor is removed and the original data restored. First this section determines the length of the scan.

If the camera interface fails to transfer data for more than one msec since the previous transfer, the routine times out and begins to shrink the data by 4:1 linearly (16 to 1 by area). This is performed columnwise, top to bottom (to the assigned scan height), in groups of 16 cells of 4.times.4 bits. Each 4.times.4 cell in the original camera data determines one bit in the resultant display of the scanned area. This is achieved by counting the number of nonzero bits in the original cell and if this count is greater than the threshold, a one is placed in the result, else a zero.

For typewritten material this threshold should be biased to save ones, but for 50% black images (e.g., pictures) probably 50% of the cell size (i.e., 8) would be better.

BANKSET: A second character is input and its low three bits are used to set the bank to be displayed.

SCNDWN: decreases the current scan height setting by one increment, i.e., 16 counts. The routine allows a minimum height of one cell (i.e., 4 bits). The CNVTM subroutine is called to display the current scan height.

SCNUP: increases the current scan height setting by one increment (i.e, 16 counts), but the maximum of 128 cells (512 counts) cannot be exceeded. This shares code with SCNDN.

RELLFT: will assign a software left margin unless present cursor location is equal to the left margin previously set, in which case the left margin will reset to zero.

RELRIT: Same as RELLFT, but for the right software margin.

RETCAM: Code for the camera carriage return function which is equivalent to a normal carriage return but with a line feed equal in height to the current scan height setting.

CLEAR: Code to set all of the currently displayed bank to all zeros or all ones depending on the current reverse video mode.

STCAMDET: Subroutine to set a horizontal line containing the recognition code so that subsequent data stored by the camera interface will alter this data and allow detection of depression of the press-to-read button and subsequent camera movement.

TABIT: Code to determine the location to tab to from the unordered table of all assigned tabstops.

SETAB: Code to find if a current tab already has the same value as the cursor and if so to delete it. If none is equal, and no more room in table, to ignore it, otherwise to add the current cursor location to the tab table to define a tap stop for the future.

BLINKURSR: Subroutine to swap the contents of the 16 4.times.4 cells at the current cursor location with their alternate (complemented) values, hence blinking the cursor.

While the invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

______________________________________APPENDIX IKEYBOARD PROMAddress Data Function Key #______________________________________00 0001 00 Suppressed RESET 6402 0003 0004 0005 0006 0007 0008 0C Clear 109 0D Bank 170A 15 Scan ht. incr 330B 16 Scan ht. decr 490C 7A z 510D 61 a 350E 71 q 190F 31 1 210 32 2 311 77 w 2012 64 d 3713 78 x 5214 63 c 5315 73 s 3616 65 e 2117 33 3 418 34 4 519 72 r 221A 67 g 391B 76 v 541C 62 b 551D 66 f 381E 74 t 231F 35 5 620 36 6 721 79 y 2422 6A j 4123 6E n 5624 6D m 5725 68 h 4026 75 u 2527 37 7 828 38 8 929 69 i 262A 6C l 432B 2C , 582C 2E . 592D 6B k 422E 6F o 272F 39 9 1030 30 0 1131 05 INDEX 2932 70 p 2833 2F / 6034 1D REVERSE VIDEO 6635 27 ' 4536 06 CAM CAR RETURN 3037 3D = 1338 0039 003A 003B 003C 003D 003E 01 TAB SET/CLEAR 313F 0F LEFT MARGIN 1540 00. .. .. .4F 0050 00. .. .. .59 005A 3B ; 445B 00. .. .. .5F 0060 1B Character Generator 1461 20 Space 6562 1A Omnispace up 4763 08 Omnispace left 6264 18 Omnispace right 6365 0A Omnispace down 4866 14 Carriage return 4667 2D 1268 00. .. .. .6D 006E 09 TAB 186F 0070 00. .. .. .75 0076 0B HOME 3277 02 RIGHT MARGIN 1678 00. .. .. .7F 0080 0081 07 RESET 6482 00. .. .. .87 0088 0C CLEAR 189 0D BANK 178A 15 SCAN HT INCR 338B 16 SCAN HT DECR 498C 5A Z 518D 41 A 358E 51 Q 198F 21 ! 290 40 @ 391 57 W 2092 44 D 3793 58 X 5294 43 C 5395 53 S 3696 45 E 2197 23 # 498 24 $ 599 52 R 229A 47 G 399B 56 V 549C 42 B 559D 46 F 389E 54 T 239F 25 % 6A0 7E .cent. 7A1 59 Y 24A2 4A J 41A3 4E N 56A4 4D M 57A5 48 H 40A6 55 U 25A7 26 & 8A8 2A * 9A9 49 I 26AA 4C L 43AB 3C Less than 58AC 3E Greater than 59AD 4B K 42AE 4F O 27AF 28 ( 10B0 29 ) 11B1 05 INDEX 29B2 50 P 28B3 3F ? 60B4 1D REVERSE VIDEO 66B5 22 " 45B6 06 CAM CAR RETURN 30B7 2B + 13B8 00. .. .. .BD 00BE 01 TAB SET/CLEAR 31BF 0F LEFT MARGIN 15C0 00. .. .. .D9 00DA 3A : 44DB 00. .. .. .DF 00E0 9F TIBUG Mode 14E1 20 Space 65E2 1A Omnispace up 47E3 08 Omnispace left 47E4 18 omnispace right 63E5 0A Omnispace down 48E6 14 Carriage return 46E7 5F 12E8 00. .. .. .ED 00EE 09 TAB 18EF 00FO 00. .. .. .F5 00F6 0B HOME 32F7 02 RIGHT MARGIN 16F8 00. .. .. .FF 00______________________________________ APPENDIX II__________________________________________________________________________MICROCODE FOR CRT OUTPUTROM__________________________________________________________________________1000 0460 BEGIN B POWAON 10501004 FF70 ORIGDAL DEF SAVORIG1006 FF50 CURSDAL DEF CURSOR CELLS1008 03E8 OTCURS DEC 1000100A 0002 CAMBANK DEC 2100C 0004 D4 DEC 4100E 0350 COLOVR DEC 8481010 00FF LOBYT HEX 00FF1012 FF2E DFTABL DEF LFTMRGN1014 0010 MAXTB DEC 161016 0008 D8 DEC 81018 3132 ASC1ASC2 ASC 12101A 0080 MXSCAN DEC 512101C 842E RECOGNIS HEX 842F101E 047B MAXROCR DEC 11471020 011C MAXROCEL HEX 11C1022 00D4 MAXCLCEL HEX D41024 0010 D16 DEC 161026 FF4E DFRITMRG DEF RITEMRGN1028 046B MAXRO DEC 1131102A 0009 D9 DEC 9102C 0020 D32 DEC 32102E 0012 D18 DEC 181030 0086 MEANRCEL HEX 861032 00D0 D200 DEC 2001034 0002 D2 DEC 21036 1FE0 IOAD HEX 1FEO1038 OBOD HOMCHR HEX OBOD103A 1DFF VIDCHR FFFF FFFF1040 OCFF CLR/SCAL HEX OCFF1042 1615 SCNDN/UP HEX 16151044 0701 RMRGTBST HEX 07011046 0F02 LTRLRTRL HEX 0F021048 9F1B SWTCHCGN HEX 9F1B104A 0614 CMCRTCRT HEX 0614104C 0509 LNFDTAB HEX 0509104E 0A1A DN/UPCHR HEX 0A1A1050 C820 POWAON MOV SCNINC,D8 1016 FFAA1056 C820 MOV TCURS,OTCURS 1008 FFA2105C C820 MOV SHOBANK,D3 17E8 FFA81062 04E0 TBMRNRLS CLR LFTMRGIN FF2C 1000 1000106A C120 MOV R4,DFTABL 1012106E C160 MOV R5,MAXTB 10141072 04F4 TABZRO CLR (R4,I+)1074 0605 DEC R51076 18FD JOC TABZRO1078 C820 MOV RITMRGN,COLOVR 100E FF4E107E C820 MOV SCANHT,MXSCAN 101A FFAC1084 04E0 CLR STCH FF2A1088 C820 CLEARTN MOV BANK,SHOBANK FFA8 8006108E 06A0 BAL CLEAR 13841092 06A0 HOME BAL STCAMDET 14BA1096 C820 MOV CURSRO,MAXROCR 101E FF26109C 0460 10E010A0 COAO LINEFEED MOV R2,CURSRO FF2610A4 60A0 SUB R2,D16 102410A8 C142 MOV R5,R210AA 6160 SUB R5,D16 102410AE 11E7 JLT HOME10B0 C802 SHORO MOV CURSRO,R2 FF2610B4 CIEO MOV R7,D8 17F410B8 1001 JMP *+1 1B0610BC COAO SAVECURS MOV R2,CURSCO FF2410C0 C1E0 MOV R7,D4 100C10C4 1001 JMP *+1 1BO610C8 COEO MOV R3,CURSCO FF2410CC 0823 SRA R3,210CE D820 MOVB CURS,D16 1025 FFA510D4 C803 MOV COLAD,R3 800410D8 C2A0 MOV R10,CURSDAL 100610DC C220 MOV R8,ORIGDAL 100410EO COAO MOV R2,CURSRO FF2610E4 0822 SRA R2,210E6 C120 MOV R4,D4 100C10EA 0701 SETO R110EC C160 MOV R5,D2 103410F0 2160 COC R5,CURSCO FF2410F4 1601 JNE SVCURS10F6 0981 SRL R1,810F8 C160 SVCURS MOV R5,D4 100C10FC C802 SVCRSO MOV ROWAD,R2 80021100 C820 MOV BANK,SHOBANK FFA8 80061106 OBOE NOP1108 C260 MOV R9,INDATA 8000110C CE09 MOV (R8,I+),R9110E 1000 SZC R9,R1 0549 SOC R9,R11112 CE89 MOV (R10,I+),R91114 0602 DEC R21116 0605 DEC R51118 16F1 JNE SVCRSRO111A AOA0 A R2,D4 100C111E 0583 INC R31120 C803 MOV COLAD,R3 80041124 0701 SETO R11126 0604 DEC R41128 16E7 JNE SVCURS112A C820 MOV CURSTIM,TCURS FFA2 FF281130 04C6 CLR R61132 04E0 NOACTION CLR TCOL FFA01136 C320 MOV R12,IOAD 1036113A C3E0 MOV R15,MAXROCEL 1020113E 1000 NOP1140 1FOF TB 151142 1601 JNE *+21144 1025 JMP ISCHAR1146 C820 MOV ROWAD,MAXROCEL 1020 8002114C C360 MOV R13,SHOBANK FFA81150 C820 MOV COLAD,TCOL FFA0 80041156 081D SRA R13,11158 0A1D SLA R13,1115A C80D MOVB BANK,R13 8006115E OB00 NOP1160 8820 C RECOGNIS,INDATA 8000 101C1166 1302 JEQ *+21168 0460 B CAMERIN 1630116C 0620 DEC CURSTIM FF281170 1502 JGT *+21172 06A0 BAL BLINKURSR 155E1176 0460 B NOACTION2 1136117A FFFF CURSREST EQU FFFF FFFF1180 C34B MOV R13,R111182 9820 CB CURS,D16 1025 FFA51188 1302 JEQ *+2118A 06A0 BAL BLINKURSOR 155E118E 045D B R13,11190 06A0 ISCHAR BAL CURSREST 11801194 1608 STCR R8,L=81196 1EOF SBZ 151198 9220 CB R8,HOMCHR 1038119C 1602 JNE *+2119E 0460 B HOME 109211A2 9920 CB R8,BANKAS 103911A6 1602 JNE *+211A8 0460 B BANKSET 12A011AC 9220 CB R8,CLR 104011B0 1602 JNE *+211B2 0460 B CLEARTN 108811B6 9220 CB R8,SCALE 104111BA 1602 JNE *+211BC 0460 (B STSCALE) 12BE11C0 9220 CB R8,SCANDN 104211C4 1602 JNE *+211C6 0460 B SCNDWN 12BE11CA 9220 CB R8,SCANUP 104311CE 0460 B SCNUP 12DC11D4 9220 CB R8,RLTBMRG 104411D8 1602 JNE *+211DA 0460 B TBMRGNRELES 106211DE 9220 CB R8,LFTREL 104611E2 1602 JNE *+211E4 0460 B RELLFT 12F011E8 9220 CB R8,RITREL 104711EC 1602 JNE *+211EE 0460 B RELRIT 130411F2 9220 CB R8,TABSET 104511F6 1602 JNE *+ 211F8 0460 B SETAB 152411FC 9220 CB R8,SWITCH 10481200 1602 JNE *+21202 0460 B TIBUG 014E1206 9220 CB R8,CGEN 1049120A 1602 JNE *+2120C 0460 B CNTRUTINE 13501210 9220 CB R8,CAMCRET 104A1214 1602 JNE *+21216 0460 B RETCAM 1318121A 1000 NOP 1000121E 9220 CB R8,CRET 104B1222 1602 JNE *+21224 0460 B CARETN 109C1228 9220 CB R8,LNFED 104C122A 1602 JNE *+2122C 0460 B LINEFEED 10A01232 9220 CB R8,DNCHR 104E1236 1602 JNE *+21238 0460 B DNMOV 15EE123C 9220 CB R8,UPCHR 104F1240 1602 JNE *+21242 0460 B UPMOV 15D81246 9220 CB R8,LFTCHR 17FE124A 1602 JNE *+2124C 0460 B LEFTGO 16001250 9220 CB R8,VIDCHR 103A1254 1602 JNE *+21256 0460 B REVIDEO 1298125A C1E0 MOV R7,CURSCO FF24125E A1E0 ADD R7,D9 102A1262 81E0 C R7,RITEMRGIN FF4E1266 1501 JLT *+21268 1015 B NEXTCH126A 9220 CB R8,RITCHR 17FF126E 1602 JNE *+21270 0460 B RITEGO 16101274 9220 CB R8,TAB 104D1278 1602 JNE *+2127A 0460 B TABIT 14E8127E 06A0 BAL PCHAR 13C01282 1000 1000 1000128A 8820 C CURSCO,COLOVR FF24 100E128E 1102 JGT NEXTCH1290 0460 B CARETN 109C1294 0460 NEXTCH B SAVECURS 10BC1298 0560 REVIDEO INV STCH FF2A129C 1009 JMP NX1 FFFF12A0 06A0 BANKSET BAL KYBDWT 107012A4 0B88 SRC R8,812A6 C808 MOV SHOBANK,R8 FFA812AA C820 MOV BANK,SHOBANK FFA8 800612BO 0460 NX1 B NEXTCH 129412B4 26A0 STSCALE BAL KYBDWT 1D7012B8 D220 MOVB SCAIL,R8 FFA612BC 10F9 JMP NX112BE C0A0 SCNDWN MOV R2,SCNHT12C0 FFAC12C2 60A0 S R2,SCNINC FFAA12C6 1502 JGT OKSCNDN12C8 C0A0 MOV R2,D8 101612CC C802 OKSNDN MOV SCNHT,R2 FFAC12D0 C1E0 MOV R7,HEXD 17FC12D4 06A0 BAL CNVTM 1B0612D8 10F1 JMP NX1 FFFF12DC C0A0 SCNUP MOV R2,SCNHT FFAC12E0 A0A0 ADD R2,SCANINC FFAA12E4 80A0 C R2,MXSCAN 101A12E8 15F1 SCNON JHT OKSCNDN12EA C0A0 BGNSHSCN MOV R2,MXSCN 101A12EE 10EE JMP OKSCNDN12FO C1A0 RELLFT MOV R6,CURSCO FF2412F4 81A0 C R6,LFTMRGN FF2C12F8 1601 JNE *+112FA 04C6 CLR R612FC C806 MOV LFTMRGN,R6 FF2C1300 0460 NX2 B NX1 12B01304 C1A0 RELRIT MOC R6,CURSCO FF241308 81A0 C R6,RITEMRGN FF4E130C 1602 JNE *+2130E C1A0 MOV R6,OVERCO 17FA1312 C806 MOV RITMRGIN,R6 FF4E1316 10F4 JMP NX21318 C820 RETCAM EQU FF2C131C FF24 RTCAMI MOV CURSCO,LEFTMRGN131E C820 MOV COLAD,CURSCO FF24 80041324 C220 MOV R8,SCANHT FFAC1328 9820 CB SCAIL,ASCI 1018 FFA6132E 1306 JEQ HTSCN1330 0810 SRA R0,11332 9820 CB SCAIL,ASC2 1019 FFA61338 1301 JEQ HTSCN133A 0810 (NOP) SRA R0,1133C 0508 HTSCN NEG R8133E A220 ADD R8,CURSRO FF261342 C808 MOV CURSRO,R8 FF261346 0460 QUITC B 1626134A FFFF FFFF FFFF1350 04E0 CNTRUTIN CLR STCH FF2A1354 6820 ROLOOP SUB CURSRO,D16 1024 FF26135A 04E0 COLOOP CLR CURSCO FF24135E C220 CHALOOP MOV R8,STCH FF2A1362 0B88 SRC R8,81364 06A0 BAL PCHAR 13C01368 05A0 INC STCH FF2A136C 1F0F TB 15136E 13EB JEQ QUITC1370 8820 C CURSCO,COLOVR 100E FF241376 15F3 JLT CHALOOP1378 8820 C CURSRO,D32 102C FF26137E 11EA JLT ROLOOP1380 10E2 JMP QUITC 10EB1384 04E0 CLEAR CLR COL FF9C1388 C820 CLROW MOV COLAD,COL FF9C 8004138E 04E0 CLR ROW FF9E1392 C820 CLRLOOP MOV ROWAD,ROW FF9E 80021398 05A0 INC ROW FF9E139C C820 MOV WRIDATA,OLWD FF2A 800013A2 8820 C ROW,CELOVRO 13B8 FF9E13A8 16F4 JNE CLRLOOP13AA 05A0 INC COL FF9C13AE 8820 C COL,CELOVCO 13BA FF9C13B4 16E9 JNE CLROW13B6 045B B R11,113B8 011D CELOVRO HEX 11D13BA 00D5 CELOVCO HEX D513BC FFFF FFFF13C0 C820 PCHAR EQU FF26 FF9E13C6 4220 SZC R8,NDHIBITE 17F813CA C820 MOV COL,CURSCO FF24 FF9C13D0 0848 SRA R8,413D2 A220 A R8,CHAROFSET 17F613D6 C120 MOV R4,=D9 102A13DA C1B8 MOVERT MOV R6,(R81+) 9820 FF2A 103413E2 1601 CB OLWD,HEXO 0546 JEQ *+1 INV R613E6 C020 MOV R0,COL FF9C13EA 0240 ANDI R0,0003 000313EE 0A10 SLA R0,1 0460 1400 FFFF . . . FFFF1400 C800 MOV REMAINWD,R0 FF9A1404 1000 NEG R01406 1000 A R0,D81408 1000 SLA R0,1140A 0A10 SRC R6 0B06140E C806 MOV REMAN,R6 FF981412 C820 MOV VTCNT,D4 100C FF921418 C2A0 MOV R10,COL FF9C141C 082A SRA R10,2141E C80A MOV COLAD,R10 80041422 C2A0 MOV R10,NDLO12 17F21426 C1E0 MOV R7,REMAINWD FF9A142A 81E0 C R7,D2 1034142E 1601 JNE *+21430 0B4A SRC R10,41432 81E0 C R7,D4 100C1436 1601 JNE *+11438 0B8A SRC R10,8143A 81E0 C R7,D6 17F0143E 1601 JNE *+21440 0BCA SRC R10,121442 C80A MASKSET MOV ANDI,R10 FF961446 054A INV R101448 C80A MOV AND2,R10 FF94144C C1E0 ALLVT MOV R7,ROW FF9E1450 0827 SRA R7,21452 C807 ALLVT2 MOV ROWAD,R7 8002 10001458 1000 NOP145A C820 MOV BANK,SHOBANK FFA8 80061460 1000 NOP1462 C160 MOV R5,BUFDATA 80001466 4160 AND R5,AND2 FF94146A C1A0 MOV R6,REMAN FF98146E C006 MOV R0,R61470 41A0 AND R6, ANDI FF961474 0BC0 SRC R0,12(=SLC4)1476 C800 MOV REMAN,R0 FF98147A E146 IOR R5,R6147C C805 MOV BUFDATA@1000,R5 80001480 0607 DEC R7 10001484 0620 DEC VTCNT FF921488 1302 JEQ *+2148A 0460 B ALLVT2 1452 10001490 2620 CZC R8,HEXF 17EE1494 1601 JNE *+21496 0648 DECT R81498 05A0 INC COL FF9C149C 1000 1000 100014A2 0604 DEC R414A4 1302 JEQ *+214A6 0460 B MOVERT 13DA14AA C820 MOV CURSRO,ROW FF9E FF2614B0 C820 MOV CURSCO,COL FF9C FF2414B6 045B B R11,IRETURN FFFF14BA C820 STCAMDET MOV BANK,CAMBANK 100A 800614C0 C820 MOV ROWAD,MAXROCEL 1020 100214C6 C160 MOV R5,MAXCOLCEL 102214CA 04C4 CLR R414CC C804 LOOPSET MOV COLAD,R4 800414D0 1000 NOP14D2 C820 MOV BUFDATA,RECOGNIS 101C 800014D8 0584 INC R414DA 0605 DEC R514DC 16F7 JNE LOOPSET14DE C820 MOV ROWAD,MEANROCEL 1030 800214E4 0460 LOPSET2 DEC R4 1DC814E8 C160 TABIT MOV R5,MAXTB 101414EC 0585 INC R514EE C120 MOV R4,DFTABL 101214F2 C060 MOV R1,DFRITMRG 102614F6 C0E0 MOV R3,MAXROCR 101E14FA 0706 FNDTAB SETO R614FC 61A0 SUB R6,CURSCO FF241500 A194 ADD R6,(R4,I)1502 150A JGT MBTAB1504 05C4 TABLUP INCT R41506 0605 DEC R51508 15F8 JGT FINDTAB150A C211 MOV R8,(R1,I)150C 6220 SUB R8,CURSCO FF241510 A808 ADD CURSCO,R8 FF241514 0460 B NEXTCH 12941518 C086 MBTAB MOV R2,R6151A 6183 SUB R6,R3151C 1502 JGT TABTOO151E COC2 MOV R3,R21520 C044 MOV R1,R41522 1OF0 TABTOO JMP TABLUP1524 C120 SETAB MOV R4,DFTABL 10121528 C160 MOV R5,MXTAB 1014152C C060 FNTABLP MOV R1,CURSCO FF241530 1312 JEQ TABRET1532 6054 SUB R1,(R4,I)1534 1312 JEQ TABCLR1536 05C4 INCT R41538 0605 DEC R5153A 15F8 JGT FNTABLP153C 1000 NOP153E C160 MOV R5,MXTB 10141542 C120 MOV R4,DFTABL 10121546 C054 TBSTLP MOV R1,(R4,I)1548 1304 JEQ TABSET154A 05C4 INCT R4154C 0605 DEC R5154E 15FB JGT TBSTLP1550 1002 JMP TABRET1552 C520 TABSET MOV (R4,I),CURSCO FF241556 0460 TABRET B NEXTCH 1294155A 04D4 TABCLR CLR (R4,I)155C 10FC JMP TABRET155E C820 BLINKURSR MOVB BANK,SHOBANK FFA8 80061564 C0A0 MOV R2,CURSRO FF26 0822156A C802 SRA R2 8002156E C0E0 MOV R3,CURSCO FF241572 0823 ARS R31574 C803 MOV COLAD,R3 80041578 C220 MOV R8,CURSDAL 1006157C 9820 CB CURS,D16 1025 FFA51582 1306 JEQ CURSPIK1584 D820 MOVB CURS,D16 1025 FFA5158A C220 MOV R8,ORIGDAL 1004158E 1603 JMP *+21590 782C CURSPIK SUBB CURS,CURS FFA5 FFA51596 C120 MOV R4,D4 100C159A C160 CURSMOVO MOV R5,D4 100C159E C802 CURSROMV MOV ROWAD,R2 800215A2 1000 NOP15A4 C838 MOV OUTDATA,(R8,I+) 800015A8 0602 DEC R215AA 0605 DEC R515AC 16F8 JNE CURSROMOV15AE A0A0 A R2,D4 100C15B2 0583 INC R315B4 C803 MOV COLAD,R3 800415B8 0604 DEC R415BA 16EF JNE CURSMOVO15BC C820 MOV CURSTIM,TCURS FFA2 FF2815C2 05A0 INC TCOL FFA015C6 8820 C TCOL,D1 17EC FFA015CC 1302 JEQ *+215CE 04E0 CLR TCOL FFA015D2 045B B R11 FFFF FFFF15D8 C220 UPMOV MOV R8,CURSRO FF2615DC A220 ADD R8,D16 102415E0 8220 C R8,MAXRO 102815E4 1102 JLT OMNRET15E6 C808 MOV CURSRO,R8 FF2615EA 0460 OMNRET B SHOCURO 162615EE C220 DNMOV MOV R8,CURSRO FF2615F2 6220 SUB R8,D32 102C15F6 11F9 JLT OMNRET15F8 6820 SUB CURSRO,D16 1024 FF2615FE 10F5 OMRET JMP OMNRET1600 C220 LEFTGO MOV R8,CURSCO FF241604 6620 SUB R8,D9 302A1608 11F0 OMLFT JLT OMNRET160A C808 MOV CURSCO,R8 FF24160E 10F7 JMP OMRET1610 C220 RITEGO MOV R8,CURSCO FF241614 A220 ADD R8,D18 102E1618 8220 C R8,COLVR 100E161C 1501 JGT *+2161E 10EF JMP OMLFT1620 A820 ADD CURSCO,D9 102A FF241626 C0A0 SHOCURO MOV R2,CURSRO FF26162A 0460 B SHORO 10B4162E FFFF1630 06A0 CAMERIN BAL CURSREST 11801634 C160 CAMERIN EQU* 17EA MOV R5,OVTIM INC TCOL1638 8820 C TCOL,MAXCOLCEL 1022 FFA0163E 1330 JH MABEND 05A0 FFA01644 C820 CAMWAIT MOV COLAD,TCOL FFA0 8004164A 0B00 NOP164C C80F MOV ROWAD,R15 80021650 0B00 NOP1652 C80D MOVB BANK 80061656 0B00 NOP1658 C220 MOV R8,INDATA 8000165C 8220 C R8,RECOGNIS 101C1660 16E9 JNE CAMARIN1662 0605 DEC R51664 1BEE JH CAMWAIT1666 0585 INC R51668 0A25 SLA R5,2166A 05A0 INC TCOL FFA0166E C820 MOV COLAD,TCOL FFA0 80041674 0B00 NOP1676 C80D MOV BANK,CAMBANK 8006 0B00167C 0B00 NOP167E C220 MOV R8,INDATA 80001682 8220 C R8,RECOGNIS 801C1686 16D6 JNE CAMARIN1688 A1A0 PRNANWY ADD R6,TCOL FFA0168C 0826 SRA R6,2168E 0A26 SLA R6,21690 04E0 CLR TCOL FFA01694 C806 MOV SCANLN,R6 FF901698 C820 MOV HIRO,MAXROCEL 1020 FF1E169E 100D JMP ONETOONE16A0 81A0 MABEND C R6,MAXCOLCEL 102216A4 13F1 JEQ PRNANWY16A6 C3E0 MOV R15,MEANROCEL 1030 100016AC 04E0 CLR TCOL FFA016B0 C1A0 MOV R6,MAXCOLCEL 102216B4 10C7 JMP CAMWAIT 3020 FF1E16BA C820 ONETOONE MOV SVCURSRO,CURSRO FF26 FF1216C0 C820 HSWATH MOV CURSRO,SVCURSRO FF12 FF2616C6 A820 ADD CURSCO,D4 100C FF2416CC 8820 C COLOVR,CURSCO FF24 100E16D2 1102 JLT *+216D4 0460 B QUITSHO 1DB816D8 1000 NOP 100016DC C120 MOV R4,SCANHT FFAC16E0 1002 NOP FFFF16E4 FFFF NOP16E6 C804 MOV REMHT,R4 FF1A16EA C820 MOV HIRONOW,HIRO FF1E FF1816F0 C0E0 VSWATH MOV R3,D4 100C16F4 C120 MOV R4,REMHT FF1A16F8 1602 JNE *+216FA 0460 B 1D8016FE 6120 SUB R4,D4 100C1702 1101 JLT *+21704 1003 JMP SW11706 C0E0 MOV R3,REMHT FF1A170A 04C4 CLR R4170C C0A0 SW1 MOV R2,D4 100C1710 C804 MOV REMHT,R4 FF1A1714 C260 MOV R9,ORIGDAL 10041718 C803 SW2 MOV SWATHT,R3 FF16171C C820 MOV CROW,HIRONOW FF18 FF141722 C820 MOV COLAD,TCOL FFA0 80041728 C0E0 MOV R3,SWATHT FF16172C C820 SWVRCL MOV ROWAD,CROW FF14 80021732 0B00 NOP1734 C80D MOV BANK,R13 100A 8000173A 0B00 NOP173C CE60 MOV (R9I+),INDATA 80001740 0620 DEC CROW FF141744 0603 DEC R31746 16F2 JNE SWVTCL1748 C0E0 MOV R3,SWATHT FF16174C 05A0 INC TCOL FFA01750 0602 DEC R21752 1302 JEQ *+21754 0460 B SW2 17181758 6820 S HIRONOW,D4 100C FF18175E C260 MOV R9,ORIGDAL 10041762 1000 NOP 10001766 9820 CB SCAIL,ASC1 1018 FFA6176C 1602 JNE *+2176E 0460 B SWEAT 177E1772 9820 CB SCAIL,ASC2 1019 FFA61778 1602 JNE *+2177A 0460 B SWEAT 177E177E C2A0 SWEAT MOV R10,D16 10241782 04C0 CLR R01784 C060 SIXTN SRC R0,151786 1024 MOV R1,D161788 04C7 CLR R7178A C1B9 MOV R6,(R9I+)178C 1000 NOP178E 1305 JEQ NOONES1790 0B16 BITCNT SRC R6,11792 1501 JGT NOTHISONE1794 0587 INC R71796 0601 NOTHISON DEC R1 16FB179A 0BF0 JNE BITCNT179C 81E0 NOONES C R7,MAXB 17E417A0 1501 JLE NOTONE17A2 0580 SETONE INC R017A4 1000 NOTONE NOP 100017A8 060A DEC R1017AA 16EC JNE SIXTN17AC 100017AE C820 MOV BANK,SHOBANK FFA8 800617B4 C060 MOV R1,CURSRO FF2617B8 0821 SRA R1,217BA C801 MOV ROWAD,R1 800217BE C060 MOV R1,CURSCO FF2417C2 0821 SRA R1,217C4 C801 MOV COLAD,R1 800417C8 1000 NOP17CA C800 MOV DATOUT,R0 800017CE 6820 SUB CURSRO,D4 100C FF2617D4 1000 NOP 100017D8 6820 SUB TCOL,D4 100C FFA017DE 0460 B VSWATH 16F0 FFFF17E4 000C MAXB DEC 1417E6 00D5 HXD5 HEX D517E8 0003 D3 DEC 317EA 1000 OVTIM DEC 24K17EC 0001 D1 DEC 117EE 000F HEXF HEX 000F17F0 0006 D6 DEC 617F2 0FFF NDL012 HEX 0FFF17F4 0008 D8 DEC 817F6 0800 CHROFSET HEX 280017F8 80FF NDHIBYTE HEX 80FF17FA 0358 OVERCO DEC 85217FC 000D HEXD DEC 1317FE 0818 LT/RTCHR HEX 08181D80 6820 NOVSWATH SUB SCANLN,D4 100C FF901D86 170E JNC ENDREDU1D88 A820 ADD TCOL,D4 100C FFA01D8E 8820 C TCOL,MAXCOLEL 100C FFA01D94 1605 JNE NOCHNG1D96 C820 MOV HIRO,MEANROCEL 1030 FF1E1D9C 04E0 CLR TCOL FFA01DA0 0460 NOCHNG B HSWATH 16C01DA4 C820 ENDREDU MOV ROW,SWCURSRO FF12 FF261DAA 06A0 BAL STCAMDET 14BA1DAE 0460 B NEXTCH 12941DB8 06A0 QUITSHO BAL STCOMDET 14BA1DBC 0460 B RTCAM1 13181DC8 0604 MOV BUFDATA,RECOGNIS C820 101C 80001DD0 0585 INC R51DD2 C804 MOV COLAD,R4 80041DD6 8160 C R5,MAXCOLCEL 17E6 16F61DDC 045B JNE LOPSET21DDE FFFF B R11,11DE0 C820 CARETN MOV CURSRO,LFTMRGIN FF2C FF24 0460 10A0 FF12 SVCURSRO BSS 1 FF14 CROW 1 FF16 SWATHT 1 FF18 HIRONOW 1 FF1A REMHT 1 FF1C SWATDIR 1 FF1E HIRO 1 FF20 THISCAN 1 FF22 NEGIT 1 FF24 CURSCO 1 FF26 CURSRO 1 FF28 CURSTIM 1 FF2A STCH 1 FF2C LFTMRGN 1 FF2E ARATAB 16 . . . FF4D FF4E RITMRGN 1 FF50 CURSRCLS 16 . . . FF6F FF70 SAVORIG 16 . . . FF8F FF90 SCANLN BSS 1 FF92 VTCNT 1 FF94 AND2 1 FF96 AND1 1 FF98 REMAN 1 FF9A REMAINWD 1 FF9C COL CRT FF9E ROW CRT FFA0 TCOL 1 FFA2 TCURS 1 FFA4 CURS 0 FFA6 SCAIL 1 FFA8 SHOBANK 1 FFAA SCANINC 1 FFAC SCANHT 1 FFAE OLWD 1__________________________________________________________________________ __________________________________________________________________________APPENDIX III__________________________________________________________________________MICROCODE FOR PRINTER OUTPUT24C0 FFFF,FFFF AC224C4 04C6 POWAON CLR R6C6 C806,FEEO MOV XAD,R6 set upCA C806,FEE2 MOV YAD,R6 homeCE C820,27A2,FEE4 MOV SCANHT,MXSCAN TBMRGNRELES MOV RITMRGN,MAXX set rite margin at extremeD4 1000,1000,10004C6 CLR R6DC C806,FEEC MOV LFTMRGN,R6EO C160,27CC MOV R5,MAXTB the # of tabs allowedE4 C120,27AC,1000 MOV R4,DFTABLEA C506,1000 TABZRO MOV (R4,I),R6, clear tab tableEE 05C4 INCT R4F0 0605 DEC R5F2 18FB,1000 JOC TABZROF6 C820,2780,FF0E MOV RITMRGN,MAXXFC 0460,2350 B HOMOOV2000 06A0,2260 READY EQU * BAL XEND04 C320,27A8 KYBDWY MOV R12,IOAD (old = IFEO)08 1F0F TB 15 keyboard weight0A 16FE JNE KYBDWT0C 3606 STCR R6,L = 80E 1E0F,1000 SBZ 15 reset data available NOP12 91A0,2796 CB R6,HOMCHR16 1602 JNE *+318 0460,2350 B HOMOOV1C 91A0,2798 CB R6,UPCHR20 1602 JNE *+322 0460,236A B UPMOV26 91A0,279A CB R6,DNCHR2A 1602 JNE *+32C 0460,2376 B DNMOV30 91A0,27AE CB R6,RLTBMRG release tabs margins34 1602 JNE *+336 0460,24D4 B TBMRGNRELES3A 91A0,27B0 CB R6,LFTREL set release left margin3E 1602 JNE *+340 460,23FA B RELLFT44 91A0,27B2 CB R6,RITREL48 1602 JNE *+34A 460,23E0 B RELRIT set release rite margin4E 91A0,27B4 CB CHARETN is it a carriage return52 1602 JNE *+354 0460,251E,91AO, B CARETN yes 27B65C 1602,460,2532, CB R6,LNFED 91A0,279C JNE *+366 1602,460,238C B LNFEED06C 1000,1000 CB R6,LFTCHR JNE *+2 B LEFTGO__________________________________________________________________________R/W VARIABLES/CONSTANTSD8 INCRE BSS 1DA SVCURSCO BSS 1 print scan onlyFEDC 200 YTIME DEC time to wait between Y incrementsFEDE 70 XTIME DEC time to wait between X incrementsFEE0 X XAD BSS 1FEE2 X YAD BSS 1FEE4 X SCANHT BSS 1FDE6 400 HTIME HEX 400 10 msec heat timeFDE8 1 CLTIM HEX 1 cool time if neededEA 28 SCANINC DEC 40FEEC X LFTMRGN BSS 1FFEE X ARATAB BSS 16 TAB arrayFFOE X RITEMRGN BSS 1 must follow TAB arrayFF10 X DIREC BSS 1 for printer swath directionIFC 460,F004F700 200 1 PHDAD 1EF6 for now print head data addressF602 202 E000 OFFSET chan ROM begins here?F604 204 1FF2 HIAD HEX 1FF2F606 206 1FE0 IOADP HEX 1FE0__________________________________________________________________________ only this page is needed to be entered W = 380 R = F4C4 set printer at home E for execute FED6 SVSCNLN BSS 1D4__________________________________________________________________________ROM CONSTANTS2780 12C1 MAXX DEC 4801 3 steps/5 mils82 899 MAXY DEC 220184 1 D186 5 D588 A D108A 10 D168C 8 D88E 0F00 YDN HEX 0F0090 0A00 YUP HEX 0A0092 0600 XLFT HEX 060094 0200 XRITE HEX 020096 0B0B HOMCHR HEX 0B0B98 1A1A UPCHR HEX 1A1A9A 0A0A DNCHR HEX 0A0A9C 0808 LFTCHR HEX 08089E 1818 RITCHR HEX 1818A0 4 DSADX HEX 4 loest display .times. digit addressA2 200 MXSCAN DEC 512A4 19 YSTEP DEC 25 for 125 milsA6 3C XSTEP DEC 60 for 100 millA8 1FE0 IOAD HEX 1FE0 for keyboard inputAA 1FF2 HIAD HEX 1FF2AC FEEE DFTABL DEF ARATABAE 07FF RLTBMRG HEX 07FF release tabs & marginsB0 0FFF LFTREL HEX 0FFF set/release left marginB2 02FF RITREL HEX 02FF set/release right marginB4 14FF CHARETN HEX 14FF carriage return on keybdB6 05FF LNFED HEX 05FF line feedB8 3C D60 DEC 60BA 9FF TAB HEX 09FF keybd tab chanBC 209F SPACE HEX 20FFBE 19 D25 DEC 25 vt char ht in counts of 5 milsC0 3 D3 DEC 3C2 4 D4 DEC 4C4 2 D2 DEC 2C6 1600 SCANDN HEX 1600 char27C8 1500 SCANUP HEX 1500 char27CA 000D HEXD HEX D27CC 0010 MXTB DEC 16 max # of tabs27CE 40 D64 DEC 6427D0 7 D7 DEC 727D2 000F D15 DEC 1527D4 3C D60 DEC 6027D6 19 D27 DEC 2527D8 100 TABSET HEX 10027DA 600 CAMCRET HEX 60027DC E000 OFSET HEX E000 Char ROM begin address27DE FF0E DFRTMRGN DEF RITEMRGN27E0 00E0 YTIMEE2 0048 XTIMEE4 0060 HEATIMEE6 0060 COOLTIMEE8 1EE0 LOAD2 HEX 1EE0355E C820,FFA8,1006 BLINKURSR MOVB BANK,SHOBANK64 C0A0,FF26,0822 MOV R2,CURSRO6A C802,1002,C0E0, SRA R2 2 places FF24 MOV ROWAD,R2 unnecessary MOV R3,CURSCO72 0823,C803,1004 ARS R3, 2 places MOV COLAD,R378 C220,3006 MOV R8,CURSDAL7C 9820,3025,FFA5 CB CURS,D1682 1306 JEQ CURSPIK206C = 1000,1000,91A0, CB R6,TIBUGCHR 27BD 74 1602 JNE 76 0460,3000 BLWP CRT 7A 91A0,27C6 CB R6,SCANDN 7E 1602 JNE *+2 80 460,23C6 B SCNDOWN 84 91A0,27C8 CB R6,SCANUP 88 1602 JNE *+2 8A 460,23A0 B SCNUP 8E 91A0,27D8 CB R6,TABSET 92 1602 JNE *+2 94 460,2420 B SETAB 98 91A0,27DA CB R6,CAMCRET 9C 1602 JNE *+2 9E 460,2548 B RETCAM A2 C120,FEE0 MOV R4,XAD A6 A120,27B8 ADD R4,D60 the nbrofsteps/char AA 6120,FF0E SUB R,RITEMRGIN AE 1102 JLT *+2 BO 460,2000 B READY don't do anything fo this as no room to print B4 91A0,279E CB R6,RITCHR B8 1602 JNE *+2 BA 460,2380 B RITEGO BE 91A0,27BA CB R6,TAB C2 1602 JNE *+2 C4 460,2470 B TABIT C8 460,2100 B PCHAR CC FFFF POWRESET BAL SCNEND(1A8) 2350 C220,FEE0 HOMOOV MOV XAD to R8 54 0508 NEG R8 56 06A0,2200 BAL XMOV 5A C220,FEE2 MOV YAD to R8 5E 0508 YUPMOV NEG R8(1B0) 2360 6A0,2280 YMOVTO BAL YMOV 64 C0A0,FEE4 MOV R2,SCANHT 68 1004 JMP PAST 236A C220,27A4 UPMOV MOV YSTEP to R8 6E 460,235E B YUPMOV PAST B INCSCN display scanht 72 0460,23B2 NOP 2376 C220,27A4 DNMOOV MOV YSTEP to R8 7A 460,2360 B YMOVTO 37E FFFF(1C0) 2380 C220,27A6 RITEGO MOV XSTEP to R8 84 06A0,2200 XGO BAL XMOV 88 0460,2000 B READY 238C C220,27A6 LEFTGO MOV XSTEP to R8 90 0508 NEG R8 92 0460,2384 B XGO 396__________________________________________________________________________ *routine to move in the Y axis the number of *steps in R8 on entry. + sign is down the pg * *no other registers have meaning on entry *or exit2280 04CF YMOV CLR R15282 058F INC R15 i.e. = D1 in R15284 04C0 CLR R0 showing that is 1st step286 C120,278E MOV YDN,R4 down is normal28A C208 MOV R8,R8 get sign of movement28C 1329,1505 JE YEND JGT YSTPLP if normal, go ahead290 C120,2790 MOV YUP,R4 up movement needed294 050F NEG R15 so decrease not increase296 0508,1000 NEG R8 get abs value # of step29A C320,27E8 YSTPLP MOV R12,I0AD229E C060,FEE2 MOV R1,YAD2A2 A04F ADD R1,R152A4 111D JLT YEND don't allow move beyond home2A6 8060,2782 C R1,MAXY nor2AA 131A,1000 JE YEND beyond margin2AE C801,FEE2 MOV YAD,R1__________________________________________________________________________ *now for the actual movement 2B2 3184 LDCR R4,L = 4 set up direction and step bits2B4 1000,1000 MOV HIAD,R122B8 1000,1000 LDCR R4,L = 2 any reg would__________________________________________________________________________ do *pulse the outputs, initiating the steps 2BC C160,27E0 MOV R5,YTIME2C0 8220,27C4 C R8,D2 is it the 2nd last step?2C4 1304 JEQ DBLIT yes so wait longer after2C6 C000 MOV R0,R0 is it still zero?2C8 1602,1000 JNE YTIMKIL2CC 0A15 DBLIT SLA R5,1 1 places so 2 times as long__________________________________________________________________________ *after the 1st step & after the 2nd last step *the wait before the next step is two times *as long as normal * 22CE 0605 YTIMKIL DEC R5 count time down to zero2D0 15FE JGT YTIMKIL2D2 0580 INC R0 so it's not the first time2D4 0608 DEC R8 count down the steps2D6 1204 JLE YEND no more Y steps2D8 0460,229A,1000,1000 B YSTPLP__________________________________________________________________________ *here you have finished the movement so display 22E0 C1E0,278C YEND MOV R7,D8 is Y display address2E4 C060,FEE2 MOV R1,YAD2E8 C34B MOV R11,R13 save return address2EA 06A0,2300,1000, BAL CNVT 7 display 4 digits 10002F2 06A0,2330 BAL DDIG & the hiest digit (5th)2F6 045D B R13,I return__________________________________________________________________________ *routine to move the printhead in the X axis alone the number of steps given in the Reg 8 & sign is to progress to the right. No other registers have meaning on entry or exit from this routine. F200 04CF XMOV CLR R15202 058F INC R15 positive increment204 04C0 CLR R0 to show first step delay206 C120,2794 MOV R4,XRITE normal to rite20A C208 MOV R8,R8 get sign of movement20C 1329,1505 JEQ XEND JGT SXTPLP it is normal__________________________________________________________________________ *here the movement is to be to the left not rite 210 C120,2792,1000 MOV R4,XLFT NOP NOP216 050F NEG R15218 0508 NEG R821A C320,27E8 XSTPLP MOV R12,I0AD221E C060,FEE0 MOV R1,XAD222 A04F ADD R1,R15224 111B,1000 JLT XEND don't go to left of - left margin228 8060,2780 C R1,MAXX would this go to rite of margin22C 1A19 JL XEND it would be too far22E C801,FEE0 MOV XAD,R1232 3184 LDCR R4,L = 4 output direction bits234 1000,1000 MOV R12,HIAD238 1000 LDCR R4,L = 2 any reg would do MOV R5,XTIME23A C160,27E2,8220, C R8,D2 is it 2nd last step? 27C4242 1303 JEQ XDBLTM yes so longer delay244 8000 C R0,R0 is it the first step246 1603,1000 JNE XTIMKL24A 0A25 XDBLTM SLA R5,2 places (4 times longer wait)24C 0605 XTIMKL DEC R5 wait for the step24E 15FE JGT XTIMKL to settle250 0580 INC R0 so it isn't 1st time252 0608,1000 DEC R8 count down the steps256 1202 JLE XEND258 0460,221A B XSTPLP more steps__________________________________________________________________________ needed *here the stepping necessary is complete so display 25C 045B,FFFF260 C0A0,FEE0 XEND MOV R2,XAD264 04C1 CLR R1266 3C60,27C0 DIV R1,D3 (3 steps for 5 mils)26A C1E0,27C2 MOV R7,D426E C34B MOV R13,R11 save return address270 06A0,2300 BAL CNVT display 4 digit X address274 045D B R13,I return276SCANUP EQU* *subroutine to increase the scan ht in steps of the scan ht increment 3A0 C060,FEE4 MOV SCNHT,R23A4 A0A0,26EA ADD SCNINC,R23A8 80A0,27A2 C R2,MXSCAN would that be too high?3AC 1B02 JH? INCSCN NOT too far3AE C0A0,27A2 SCNEND MOV MXSCAN,R2 yes too high3B2 C802,FEE4 INCSCN MOV R2,SCNHT3B6 C1E0,27CA MOV HEXD,R7 set for diplay3BA C34B MOV R11,R13 sae return address3BC 6A0,2306 BAL CNVTNM display 4__________________________________________________________________________ digits *of scan ht. the 4th is hidden *by wraparound to non existent *address. 3C0 4C6 CLR R6 so return not confused3C2 460,2000 B READY return to__________________________________________________________________________ caller. * * * *now rutine to decrease scan ht 3C6 C0A0,FEE4 SCANDN MOV SCNHT to R23CA 60A0,26EA S SCNINC,R23CE 1502 JGT OKSCNDN3D0 4C2 CLR R23D2 0582 INC R2 set minimum ht3D4 460,23B2 OKSCNDN B INCSCN3D8 FFFF,FFFF,FFFF,FFFF3E0 C1A0,FEE0 RELRIT MOV R6,XAD3E4 8820,FF0E,FEE0 C RITEMRGN,XAD3EA 1602 JNE *+23EC C1A0,2780 MOV R6,MAXX3F0 C806,FF0E MOV RITEMRGN,R63F4 460,2000 B READY3F8 FFFF3FA C1A0,FEE0 RELLFT MOV R6,XAD3FE 8820,FEEC,FEE0 C LFTMRGN,XAD404 1601 JNE *+2406 4C6 CLR R6408 C806,FEEC MOV R6,LFTMRGN40C 460,2000 B READY410 wld be next__________________________________________________________________________ *here you have a TAB request and it is still possible to move to the rite470 C160,27CC TABIT MOV R4,MXTB # of tabs poss74 9585 INC R5 so rite margin stops it76 C120,27AC MOV R4,DFTABL__________________________________________________________________________ *now to find the tab setting closest to the rite of the current head position 7A C0E0,2780 MOV R3,MAXX7E OA13,CO60,27DE SLA R3 1 place so even rite margin is to left MOV R1,DFRTMRG so if at rite margin482 FNDTAB SETO R6 i.e. 1 this to require some notion to the rite84 070686 61A0,FEE0 SUB R6,XAD8A A194 ADD R6,(R4,I)8C 150D JGT MBTAB well it is to the rite8E 1000 TABLUP NOP 90 05C4 INCT R4 92 0605 DEC R5(24A) 94 15FY JGT FNDTAB loop till end or find__________________________________________________________________________ *if it drops thru here then in R1 is tab array addres needed 96 C211 MOV R8,(R1,I)98 6220,FEE0 SUB R8,XAD9C 06A0,2200 BAL XMOV go the tabA0 460,2000 B READY having tabbed what nextA4 FFFFA6 FFFF__________________________________________________________________________ *now this is to rite of the present loc but it may not be the closest to the rite4AB C086 MBTAB MOV R2,R6 save this distanceAA 6183,1000 SUB R6 R3 is it closer than the last?A4 1502 JGT TABTOO no it is not__________________________________________________________________________ close *yes it was closer B0 C0C2 MOV R3,R2 save the nu closer distB2 C044 MOV R1,R4 save the location in R1B4 0460,248E TABTOO B TABLUP maybe another is closer4B8 cont__________________________________________________________________________ *here yu are to set a tab420 C120,27AC SETAB MOV R4,DFTABL24 C160,27CC MOV R5,MXTB28 1000,1000,1000,1000__________________________________________________________________________ *first, is any present tab already at this X address430 C060,FEE0 FNTABLP MOV R1,XAD434 1315 JEQ TABRET no tab set at zero436 6054 SUB R1,(R4,I)438 1316 JEQ TABCLR is same so drop this tab43A 05C4 INCT R443C 0605 DEC R543E 15F8 JGT FNTABLP440 1000 NOP__________________________________________________________________________ *at end this means no tab = to current XAD *so it is OK to add this one if space avail442 C160,27CC MOV R5 MXTB446 C120,27AC MOV R4,DFTABL44A C054 TBSTLP MOV R1,(R4,I)44C 1307 JEQ TABSET yes it is free44E 05C4 INCT R4450 0605 DEC R5452 15FB JGT TBSTLP454 1000 NOP__________________________________________________________________________ *if yu het here there was not room for this TAB to be inserted so yu shld complain456 0460,2000 B READY or else ignore reque45A FFFF45C C520,FEE0 TABSET MOV (R4,I),XAD460 0460,2000 TABRET B READY464 FFFF466 4D4 TABCLR CLR (R4,I)468 0460,2000 B READY46A continueF510 C220,27D4,1000 SPACIT MOV R8, = D60 is 20 5 mil steps for char16 06A0,2200 XMX BAL XMOV1A 0460,2000 B READY ( = OPERATOR) *1E C220,FEE0 CRETN MOV R8,XAD22 6220,FEEC,1300 SUB R8,LETMRGN JE *+1 CRETURN NEG R828 0508,06A0,2200 BAL XMOV2E 1000,100032 C220,27D6 LNFEED MOV R8, = D25 (3 hits per spot *9 spots hi)36 06A0,2280 BAL YMOV3A 0460,2000 B READY3E 1000 *40 C220,FEE0, ALLEFT MOV R8,XAD (NEG R8)F544 460,2532 B CRETURN__________________________________________________________________________PCHAR EQU* *here to print an ordinary character F100 C120,2780 MOV R4,MAXX104 6120,FEE0 SUB R4,XAD108 1502 JGT *+210A 460,200 B READY don't print if at margin10E 0B86 SRC R6,8 place input in rite bite110 0246,003F ANDI R6,3F lo six bits only114 0A46 SLA R6,4 make room for col #116 05C6118 C2A0,27C2 MOV R10 = D4 5 by 7 chars11C A1A0,27DC ADD R6,OFFSET120 C256,1000 COLOOP INCT R6 this rom 1st col is nul MOV R9,(R6,I)124 C0A0,27CE MOV R2 = D64 # of print head heaters128 C320,2602 MOV R12 PHDAD Ioad of print head12C 05C6 INCT R6 adjust column may need to rotate R912E C120,27D0 BITLUP MOV R4,7 for ones132 2260,27EA COC R9,H*4K is LSB of col one136 1301 JEQ SENDA1138 04C4,30C4 CLR R4 zeros then13C 30C4,30C4 SENDA1 LDCR R4,L = 5 3 data bits start stop140 0A19 SLA R9,1 notice arith shift142 06A0,27C0 SUB R2,D3146 15F3 JGT BITLUP__________________________________________________________________________ *now the print head shift reg is loaded so let's heat it up 148 C0E0,27C0 MOV R3 = D3 3 col spots per dotF14C 06A0,216C MOBURN BAL HEATONOFF150 06A0,2200 BAL XMOV154 0603 DEC R3 count down the 3 col spots per dot156 15FA JGT MOBURN158 060A DEC R10 the col # (5 cols)15A 1102 JLT NOLUP15C 460,2120 B COLOOP160 C220,27D2 NOLUP MOV R8, = 15 2 space cols 18 pulses but use 15 so = 100 mils164 460,2516 BAL XMOV between chars168 FFFF16A FFFF sub16C C320,2600,1DFF HEATONOFF MOV R12,PHDAD SBO 6 turn heat on172 C160,27E4 MOV R5,HTIME D400 lst time176 0605 TIMEHT DEC R5178 15FE,1000 JGT TIMEHT17C 1EFF SBZ 6 turn heat off17E C220,27C0 MOV R8, = 3 set up for X move to follow__________________________________________________________________________ *should yu wait for the heat to 182ol?- 1000184 C160,27E6,1000 MOV R5,CLTIM18A 0605 TIMECL DEC R518C 15FE,1000 JGT TIMECL190 45B,1000 B R11, I return1942004 0460,2610 B PAWAIT2610 06A0,34BA PAWAIT BAL STCAMDET2614 C1A0,3020,04E0, MOV R6,MAXROCEL FFA01C 1000,1000,1000 CLR TCOL22 CC20,3036 PAWAIT2 MOV R12,IOAD26 1F0F TB 1528 1602 JNE *+22A 0460,2008 B PISCHAR__________________________________________________________________________ *now no char was entered has anything been read by camera yet 2E C820,3020,1002 MOV ROWAD,MAXROCEL34 0B00,1000 TIME, NOP38 C820,FFAO,1004 MOV COLAD,TCOL3E 0B00,1000 TIME, NOP42 C360,3034 MOV R13,CAMBANK46 081D SRA R13,148 OA1D SLA R13,1 address4A C80D,1006 MOV RANK,R13 TIME, NOP4E 0B00,1000,8820,1000,301c C RECOGNIS,INDATA58 1302 JEQ *+25A 0460,2670 B PCAMERIN5E 1000,1000 NOP, NOP62 0460,2622 JMP PAWAIT266 next FFFF,FFFF,FFFF,FFFF,FFFF__________________________________________________________________________ *here camera movement was detected 2670 C160,37EA PCAMERIN MOV R5,OVTIM74 8820,3022,FFA0 C TCOL,MAXCOLCEL7A 1602,0460,26F6 JE PMABEND at end80 05A0,FFA0 INC TCOL84 C806,1002,0B00, PCAMWAIT MOV ROWAD,R6 1000nop TIME, NOP MOV COLAD,TCOL8C C820,FFA0,1004, TIME, NOP 0B00,100096 C80D,1006 MOV BANK,R139A 0B00,1000 TIME NOP9E C220,1000address MOV R8,INDATAA2 8220,301C C R8,RECOGNISA6 16E4 JNE PCAMERINA8 0605 DEC R5 nopAA 1BEC,1000,1000 J11 PCAMWAIT__________________________________________________________________________ *now if camera reads data which is accidentally = recognis yu will time out also B0 05A0,FFA0 INC TCOLB4 C820,FFA0,1004 MOV COLAD,TCOLBA 0800,1000 TIME, NOPBE C220,1000address MOV R8,INDATAC2 8220,301C C R8,RECOGNISC6 16D4 JNE PCAMERINC8 C1E0,FFA0 PPRINANYWAY MOV R7,TCOL is 1/4 bitcutCC 81A0,3020,1302, C R6,MAXROCEL A1E0,3022 JEQ *+2 ADD R7,MAXCOLCELD6 1000,1000,1000 SRA R7,2 ?? not for one to one26DC 1000 SLA R7,2 ??26DE 04E0,FFA0 CLR TCOL6E2 C807,FF90 MOV SCANLN,R7__________________________________________________________________________ *here yu are to print the camera input 0810 04E0,FF10 PONETOONE? CLR DIREC initiative to rite14 04E0,FFA0,C820, CLR TCOL assume camera scan FEE2,FF12 MOV SVCURSRO,YAD1E C820,3020,FF1E MOV HIRO,MAXROCEL24 C820,FEE0,FEDA MOV SVCURSCO,XAD2A C820,37EC,FED8 MOV INCRE,D130 C820,FF90,FED6 MOV SVSCNLN,SCANLN36 C820,FEE4,FF1A, MOV REMHT,SCANHT 1000,1000,1000, 1000,100046 1002,FFFF,FFFF PHSWATH MOV SVCURSCO,SVCURSCO?4C C820,FED6,FF90 MOV SCANLN,SVSCNLN52 C120,FF1A PVSWATH MOV R4,REMHT??__________________________________________________________________________56 1000,1000,1000, NOP NOP NOP NOP NOP 1000,1000,100062 C0E0,37F4 PSW3 MOV R3,D8 (32 bit head)66 C120,FF1A MOV R4,REMHT6A 1602 JNE *+26C 0460,386A PNOVSWATH B PNOVSWATH shld never read here70 6120,37F4 SUB R4,D8 32 bit head normal swath ht74 1101 JLT PSW076 1005 JMP PSW178 C0E0,FF1A PSW0 MOV R3,REMHT nops7C 04C4,1000,1000 CLR R482 C0A0,300C PSW1 MOV R2,D4 (4 cols in cel)86 1001,FFFF nop8A C260,3000,1000 MOV R9,CURSDAL nop nop 1000,100094 C803,FF16 PSW2 MOV SWATHT,R398 C820,FF1E,FF14, MOV CROW,HIRO nop nop 1000,1000,1000A4 C820,FFA0,1004 PSWVTCL MOV COLAD,TCOLAA 0B00 TIMEAC C820,FF14,1002 MOV ROWAD,CROWB2 0B00 TIMEB4 C820,FFA8,1006 MOV BANK,CAMBANKBA nextBA 0B00 TIME addressBC CE60,1000 MOV R9+, INDATAC0 0620,FF14 DEC CROWC4 0603 DEC R3C6 16EE JNE PSWVTCL swatch vert colC8 1000,1000,1000__________________________________________________________________________ *now yu have 4 vt cols that can be printedCE C260,3006 MOV R9,CURSDALD2 C060,3024 PTOLEFT MOV R1,D16 (64 shift reg stageD6 C0E0,37F4 MOV R3,D8 (D16 for 64)DA C020,08FC MOV R0,D12 for SRCDE C182 MOV R6,R2E0 9820,FF10,300C PLFRT CB DIREC,D4 (hi byte is 0)E6 1603 JNE *+2E8 0506,A1A0,2786 NEG R6 ADD R6,D5 *here yu are to print to left EE 1004,FFFF, NOP,NOPF2 FF,FF,FFFF NOP,NOP room for fixes NOP,NOP nopF8 C219,1000 MOV R8,(R9I)FC 0548 INV R8 so print black on whiteFE 81A0,37EC C R2,D1 1st of 4902 130B JEQ PRITMOS904 0B08 SRC R8,0 reg 0 has 4 or C906 81A0,3034 C R2,D290A 1306 JEQ PRITMOS0C 0B08 SRC R8,00E 81A0,37E8 C R6,D312 1301 JEQ PRITMOS14 0B08 SRC R8,016 31C8,0B18,31C8, PRITMOS LDCR R8,L = 4 0B18,30C820 0B18,30C8 DEC R1 (# of shift reg cycles24 060126 0603 DEC R328 16E6 JNE PTOLEFT??__________________________________________________________________________ *now to fill up rest of shift reg to get data to hi end 92A 0A21 SLA R1,292C 0601 PFLUSH DEC R12E 1106 JLT PENCOLSWAT30 04C8 CLR R832 30C8 LDCR R8,334 10FB JMP PFLUSH36 FF,FF,FF3C 06A0,216C PENCOLSWAT BAL HEATONOFF print40 1000 nop42 9820,300C,FF10 CB DIREC,D4 to rite is 048 1302 JEQ PRT14A 0508 NEG R8 (set by Heatonoff at 34C 1003 JMP PRT24E 8820,2780,FEE0 PRT1 C XAD,MAXX JNE *+2 B RTREV54 1339,06A0,2200, PRT2 BAL XMOV 05C9,0602,16B9 INCT R960 1000 DEC R2 JNE PTOLEFT62 A820,FED8,FFA0 ADD TCOL,INCRE68 1101 JLT PRT46A 1011 JMP PRT56C 1000 nop__________________________________________________________________________ *yu are at left of screen but maybe not left of scan6E 8820,3030,FF14 PRT4 C CROW,MEANROCEL74 1532,1001,FFFF JGT LFTREV7A C820,3022,FFA0, MOV TCOL,MAXCOLCEL yu just A820,OFFE,FF1E, completed left going * 0460,09BC,FFFF swath ADD HIRO,BLKDIF JMP PMVX8C 0620,FF90 PRT5 DEC SCANLN90 1320,1000 JEQ PREVERS94 9820,FF10,300C CB DIREC,D4 is it 0 for rite9A 1610,1000 nop JNE PMVX?9E 9820,3030,FF14 C CROW,MEANROCELA4 1502 JGT PRT3A6 100A,1000 nop JMP PMVXAA 8820,37E6,FFA0 PRT3 C TCOL,HEXD5B0 1605 JNE PMVX__________________________________________________________________________ *so go to left of lower camera section but on same swath 9B2 04E0,FFA0 CLR TCOL (0)B6 6820,3FFE,FF1E SUB HIRO,BLDKIF (is dif tween) MAXROCEL & MEANROCEL)BC 1001,FFFF PMVX NOP NOP in R8 is amt + direc .+-.3C0 0460,0862,FFFF, B PSW3 FFFFC8 D820,300D,FF10 RTREV MOVB DIREC,(D4 + 1) set for leftoCE 1008,FFFF JMP DIRCD2 9820,300C,FF10 PREVERS CB DIREC,D4D8 13F7 JEQ RTREV just completed going riteDA 1000 LFTREV NOPDC 04E0,FF10 CLR DIRECE0 0520,FED8 DIRC NEG INCREE4 C220,FF16 MOV R8,SWATHT (43 is closest is approx the ht of 32 heads shld be 32 if rite nops size & full ht)E8 1000,0A28 SLA R8,2EC 06A0,2280 BAL YMOVF0 6820,FF16,FF1E SUB HIRO,SWATHTF6 A820,FED6,FFAO ADD TCOL,INCRE correct for overshootFC 6820,FF16,FF1A SUB REMHT,SWATHT is it end of printA02 1302 JEQ *+2 yest04 0460, B PHSWATH go print next swath nopA08 C220,FF12,1000 MOV R8,SVCURSROA0E 6220,FEE2 SUB R8,YADA12 06A0,2280 Bal YMOV leave print head at topA16 1000 NOP__________________________________________________________________________ *this is end of print the scan *but yu may be at wrong end of scanA18 9820,2000,FF10 CB DIREC,D41E 1306 JEQ ENDPRINT20 C220,FED6 MOV R8,SVSCANLN24 0A28,1000 nop SLA R8,228 06A0,2200 BAL XMOV mov to rite side if on left2C 0460,2000 ENDPRINT B NEXTCHA30 next& OFFEE = 0096 BLKDIF MEANROCEL + this = MAXROCELOFFC = 000C D1226E6 C820,3020,FF1E MOV HIRO,MAXROCELEC 0460,0810 B P ONETOONEF0 1000,1000,1000F6 81A0,3030 PMABEND C R6,MEANROCELFA 13E6 JEQ PPRINANYWAYFC C1A0,3030 MOV R6,MEANROCEL2700 04E0,FFA0 CLR TCOL2704 0460,2684 B PCAMWAIT2708 next__________________________________________________________________________

Claims

1. A selective image copier comprising:

a scanner, manually operable by a user thereof, including manually-activated means for serially scanning a portion of said image, whereby electrical signals are produced corresponding in intensity to the portion of the image scanned;

means responsive to said scanner for digitizing said electrical signals to thereby produce first-digital signals;

means for sensing movement of said scanner, said movement being by a scan increment which places said scanning means at a different location on said image;

a printing medium;

a print head comprising a plurality of print elements arranged in a print column;

means responsive to said first-digital signals from said digitizing means for applying second-digital signals corresponding to said first-digital signals in parallel simultaneously to said print elements to thereby print an image on said printing medium in response to said second signals;

motion-control means for imparting relative motion between said print head and said printing medium in a direction which is orthogonal to said print column, said movement being by a print increment which bears a predetermined relationship to said scan increment; and

means connected to said motion-control means, responsive to said scanner-movement-sensing means, for synchronizing the relative movement of said print head and printing medium with the movement of said scanner.

2. The combination in accordance with claim 1 wherein said digitizing means further comprises a data buffer for storing digital signals, and means for modifying digital signals stored in said data buffer.

3. The combination in accordance with claim 2 wherein said manually-operable scanner further includes indicator means for indicating at said scanner that said data buffer is unable to store data, whereby overrun of said buffer is prevented by said user deactivating said serial-scanning means.

4. The combination in accordance with claim 2 wherein said means for modifying includes a microprocessor and keyboard input means to said microprocessor whereby said print head is controlled by said keyboard so that information in addition to said scanned image is printed on said print medium.

5. The combination in accordance with claim 1 further comprising:

means for imparting relative motion between said print head and said print medium in such a direction and by such an amount as to effectuate line indexing of the printed image on said print medium.

6. In a selective copying system wherein selected portions of a source document image are copied by a user onto a copy paper, the improvement comprising:

a manually-operated, portable scanner adapted to scan a selected portion of said document by a user placing said scanner at any selected line position on said source document, said scanner adapted to be used to scan said document in a user-selected sequence;

printing means including a pring head responsive to said scanner for copying said scanned image onto said copy paper; and

means for positioning said print head anywhere on said copy paper in a user-selected sequence;

whereby the portion of the image selected by said user on said source document is reproducible at any position on said copy paper, said position being separately selected by said user.

7. The combination in accordance with claim 6 wherein said scanner further comprises:

first means for converting signals corresponding to a scanned image into digital first-print data; and

wherein said printing control means further comprises:

second means for inputting additional digital second-print data;

means responsive to said first-and-second means for transmitting said first- and second-print data to said print head; and

means at said print head responsive to said print data for printing said scanned image and said additional print data onto said copy paper.

8. The combination in accordance with claim 6 wherein said scanner includes variable field selection means for changing the amount of the source document scanned and said printing means includes means for advancing the reproduced image by an amount determined by the setting of said variable field selection means.

9. A selective-image recorder comprising:

a scanner including means for serially scanning a portion of said image, whereby a series of electrical signals are produced corresponding in intensity to the portion of the image scanned;

means responsive to said scanner for digitizing said series of electrical signals to thereby produce a series of first-digital signals;

a buffer for storing said first-digital signals;

means for sensing movement of said scanner, said movement being by a scan increment which places said scanning means at a different location on said image;

a recording medium;

a recording head comprising recording means for recording digital data on said recording medium;

means responsive to said buffer for applying second-digital signals corresponding to said first-digital signals to said recording head to thereby record data on said recording mediumin response to said second signals; and

motion-control means for imparting relative motion between said recording medium and said recording head, said movement being by an increment which bears a predetermined relationship to said scan increment;

whereby variable length selectively-scanned material is recorded on said recording medium as a series of adjacent digital data records.

10. The combination in accordance with claim 9 wherein said recording head is a thermal print head and said recording medium is heat-sensitive paper.

11. The combination in accordance with claim 9 wherein said recording head is a magnetic tape head and said recording medium is magnetic recording tape.

12. The combination in accordance with claim 9 further comprising means for modifying digital signals stored in said data buffer.

13. The combination in accordance with claim 9 wherein said scanner further includes indicator means for indicating at said scanner that said data buffer is unable to store data, whereby overrun of said buffer is prevented by said user deactivating said serial scanning means.

14. The combination in accordance with claim 12 wherein said recording head is a print head, said recording medium is a print medium, and said means for modifying includes a microprocessor whereby said print head is controlled by said keyboard so that information in addition to said scanned image is printed on said print medium.

15. The combination in accordance with claim 10 further comprising:

means for imparting relative motion between said print head and said heat-sensitive paper in such a direction and by such an amount as to effectuate line indexing of the printed image on said paper.

16. The combination in accordance with claim 12 wherein said means for modifying includes a microprocessor and keyboard input means to said microprocessor whereby said motion control means is controlled by said keyboard so that information in addition to said scanned image is recorded on said recording medium.

17. The combination in accordance with claim 9 wherein said recording medium is the screen of a cathode ray tube and said recording means is an electron beam.

18. The combination in accordance with claim 16 wherein said recording medium is the screen of a cathode ray tube and said recording means is an electron beam.