Keyboard interrupt method and apparatus

Details Keyboard interrupt method and apparatus Keyboard interrupt method and apparatus

1978-12-13

1980-03-11

Nusbaum, Mark E.

Boots, shoes, and leggings

G06F 302, G06F 918

Patent

active

041931130

ABSTRACT:
A method for interrupting the execution of a keyboard macroinstruction by a central processor to permit execution of non-keyboard macroinstructions when no external data is present in the central processor keyboard buffer. Auxiliary registers are provided mirroring critical registers used by the central processor for processing both keyboard and non-keyboard macroinstructions. The central processor interrogates the keyboard buffer to ascertain entered data. If no entered data is present, a non-keyboard macroinstruction is executed. If entered data is present, it is processed. Values are continuously exchanged between the auxiliary and critical registers to maintain the proper values for executing both keyboard and non-keyboard macroinstructions.

REFERENCES:
patent: 3293612 (1966-12-01), Ling
patent: 3568164 (1971-03-01), Schiller
patent: 3601810 (1971-08-01), Anderson et al.
patent: 3614740 (1971-10-01), Delagi et al.
patent: 3618037 (1971-11-01), Wollum et al.
patent: 3643221 (1972-02-01), Chamber
patent: 3740725 (1973-06-01), Fletcher et al.
patent: 3781810 (1973-12-01), Downing
patent: 3905025 (1975-09-01), Davis et al.

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