Executing micro-code instruction with delay field and...

Details Executing micro-code instruction with delay field and... Executing micro-code instruction with delay field and...

2008-10-17

2011-12-06

Kim, Kenneth (Department: 2111)

Electrical computers and digital processing systems: processing

Processing control

Processing sequence control

C712S208000

Reexamination Certificate

active

08074061

ABSTRACT:
A microsequencer is disclosed that controls the order in which microcode instructions are fetched from a microcode ROM. Each microcode instruction includes an execution command for execution by one or more execution units. Each microcode instruction also includes a microsequencer command to indicate the location of another microcode instruction at the microcode ROM. The microcode instruction can also include a delay field, indicating a selectable time when the associated microcode instruction is to be decoded. The delay field thereby provides more flexible control of the sequencing of microcode instructions.

REFERENCES:
patent: 4447873 (1984-05-01), Price et al.
patent: 4771377 (1988-09-01), Wiser et al.
patent: 2001/0027516 (2001-10-01), Kawarazaki

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