Claims
- 1. Apparatus configurable by a user for selecting, storing and displaying a set of states occurring in a collection of digital signals, the apparatus comprising:
- input means having a plurality of inputs coupled to receive the collection of digital signals for performing signal conditioning thereon according to preselected thresholds to produce a collection of conditioned signals;
- format specification means for specifying a user selected partition of the plurality of inputs into groups, including means for specifying individual user selected labels each respectively associated with each group, and including means for specifying individual user selected radices each respectively associated with each group;
- trace specification means for specifying a set of trace specification state conditions according to which the set of states to be stored and displayed is selected from among the totality of states occurring in the collection of digital signals;
- recognition means coupled to the collection of conditioned signals and responsive to the trace specification means for producing control signals indicative of whether or not a state is to be stored;
- storage means coupled to the collection of conditioned signals and to the control signals for storing the set of state data selected by the trace specification means; and
- display means coupled to the storage means and responsive to the format specification means for displaying the specified labels and including means for displaying according to the specified partition the set of stored state data as groups of integers, each group of integers displayed in its associated radix and each displayed in correlated relation to its associated label.
- 2. Apparatus as in claim 1 wherein each of the radices can independently be one of hexadecimal, decimal, octal or binary and further wherein the display indicates the radix associated with each label.
- 3. Apparatus as in claim 2 wherein the trace specification means is responsive to the format specification means by allowing the partition and associated radices specified with the format means to be used in the definition of the trace specification.
- 4. Apparatus as in claim 1 wherein the trace specification means is responsive to the format specification means by allowing the partition and associated radices specified with the format means to be used in the definition of the trace specification.
- 5. A method of allowing a user to format a trace of digital signals whose states are collected, stored and displayed by a logic state analyzer, comprising the steps of:
- partitioning the digital signals into user selected groups;
- assigning a user selected label to each group;
- chosing a user selected radix for each group; and
- entering into the logic state analyzer a trace specification described in terms of the assigned labels and chosen radices.
REFERENCE TO RELATED APPLICATIONS
This application is a division of an earlier filed copending application Ser. No. 210,462, filed on Nov. 25, 1980 by George A. Haag, et al., and amended to be entitled LOGIC STATE ANALYZER WITH STORAGE QUALIFICATION which is now U.S. Pat. No. 4,373,193. That application was contiuation of application Ser. No. 075,787 entitled LOGIC STATE ANALYZER filed Sept. 17, 1979 by the same inventors, and which is now abandoned. That application was in turn a division of a now abandoned application of the same inventors and title, Ser. No. 828,138, filed on Aug. 29, 1977.
The subject matter of the present application is related to the subject disclosed in U.S. Pat. 4,040,025, issued to Justin S. Morrill, Jr., on Aug. 2, 1977, and which was filed on Mar. 31, 1976.
The subject matter of the present application is also related to the subject disclosed in U.S. Pat. No. 4,100,532, issued to William A. Farnbach on July 11, 1978, and which was filed on Nov. 19, 1976.
U.S. Pat. Nos. 4,040,025 and 4,100,532 to Morrill, et al. and Farnbach, respectively, are hereby expressly incorporated by reference.
US Referenced Citations (6)
Non-Patent Literature Citations (2)
Entry |
Operating and Service Manual Supplement-1611A OPT A68-Hewlett Packard-Part No. 10257-90907-5/81. |
Operating and Service Manual Supplement-1611A OPT A80-Hewlett Packard-Part No. 10258-90905-8/80. |
Divisions (2)
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Number |
Date |
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Parent |
210462 |
Nov 1980 |
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Parent |
828138 |
Aug 1977 |
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Continuations (1)
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Date |
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Parent |
75787 |
Sep 1979 |
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