Number | Name | Date | Kind |
---|---|---|---|
4280199 | Osakabe et al. | Jul 1981 | |
4303993 | Panepinto, Jr. et al. | Dec 1981 | |
4354258 | Sato | Oct 1982 | |
4458357 | Weymouth et al. | Jul 1984 | |
4811297 | Ogawa | Mar 1989 |
Entry |
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IBM Corp., Personal System/2 Model 80 Technical Reference, First Edition, Apr. 1987, pp. 2-34 to 2-43. |