Interrupt signal generating means for data processor

Details Interrupt signal generating means for data processor Interrupt signal generating means for data processor

1979-05-11

1983-09-13

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 1300, G06F 300

Patent

active

044046278

ABSTRACT:
An interrupt signal generating means comprising a digital-to-analog (D/A) converter and means for supplying to said D/A converter a series of binary numbers at least some of which point to service subroutines in a data processor, and when converted to dc voltages by the D/A converter have values which are equal to dc voltages originating in various peripheral devices which indicate a need for servicing by certain ones of the processor subroutines. A plurality of voltage comparators compare the dc output of the D/A converter with the condition indicating voltages generated by the peripheral devices and when equality of dc voltages occurs on the inputs of a given voltage comparator, an interrupt signal is generated and supplied to the processor which then accesses the subroutine pointed to by the corresponding binary number.

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