Microprogram-interrupted computer

Details Microprogram-interrupted computer Microprogram-interrupted computer

G - Physics

06

F

354/230

G06F 9/46 (2006.01) G06F 9/22 (2006.01) G06F 9/26 (2006.01) G06F 9/48 (2006.01) G06F 13/26 (2006.01)

Patent

CA 1063248

ABSTRACT: The invention relates to a computer wherein all peripheral apparatus are connected, via a signal- ling line, to a switching unit in the central processor. Each microprogram comprises one or more sections in predetermined locations so as to control the inter- rogation of one or more of the signalling lines. The information of a signal thus interrogated may control a jump operation in the program. Interruptions in the program can thus occur exclusively at predetermined points. When a plurality of the said signalling lines are simultaneously active, the execution of a micro- program concerning a first peripheral apparatus can be interrupted by a microprogram concerning a second peripheral apparatus, and so on. When a microprogram is terminated, further interrupted microprograms are further completed, possibly in a sequence correspond- ing to the priority of the peripheral apparatus. The device for the power supply which can be switched on and off operates also as a peripheral apparatus, by means of a voltage detector, and has the highest priority.

234842

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