Microprocessor having waiting function

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395375, 364DIG1, 364270, 3642703, 3642704, 3642624, 3642628, 3642715, 364271, G06F 922

Patent

active

053013077

ABSTRACT:
A microprocessor capable of executing a micro-instruction output from a micro-memory according to an address which corresponds to an instruction to be executed at a time when each time the microprocessor receives the address is provided. The microprocessor includes a unit (a T1 cycle signal generator, a T2 cycle signal generator, a TW cycle signal generator) for generating a control signal for a period of time corresponding to a period of time of a waiting signal at a time when the waiting signal is received from the outside, and a unit (a microcode read-only memory, a read-only memory address latch, a read-only memory output latch, an address control circuit, a multiplexer) connected to the control signal generating unit (the T1 cycle signal generator, the T2 cycle signal generator, the TW cycle signal generator) for holding an address supplied to the micro-memory for a period of time corresponding to a period of time of the control signal.

REFERENCES:
patent: 5093902 (1992-03-01), Tokumitsu
patent: 5125088 (1992-06-01), Culley
patent: 5151986 (1992-09-01), Langar et al.
patent: 5155812 (1992-10-01), Ehlig et al.
patent: 5201036 (1993-04-01), Yoshimatsu
patent: 5220656 (1993-06-01), Itomitsu et al.

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