Multiple control stores for a pipelined microcontroller

Details Multiple control stores for a pipelined microcontroller Multiple control stores for a pipelined microcontroller

1982-11-03

1986-04-29

Chan, Eddie P.

Boots, shoes, and leggings

G06F 926, G06F 928

Patent

active

045861277

ABSTRACT:
A microcontroller for controlling a digital device which controller is formed of a plurality of control stores each of which is provided with a register counter to address different locations within corresponding control store. Each control store is accessed each clock cycle and an instruction register is provided to receive one of the fetched microinstructions from the selected control store. In this manner, a microinstruction is presented to the instruction register each clock cycle even though the previous microinstruction was a conditional branch, a jump to subroutine or a return to subroutine instruction. In order to accommodate jump to subroutine and corresponding return from subroutine instructions, the respective address of the return subroutine is stored in a push-down stack for presentation to a selected one of the above-referred-to register counters in an order the reverse of the order in which those addresses were placed on the top of the stack.

REFERENCES:
patent: 4008462 (1977-02-01), Kanda
patent: 4027291 (1977-05-01), Tokura et al.
patent: 4155120 (1979-05-01), Keefer
patent: 4179731 (1979-12-01), Yamazaki
patent: 4210960 (1980-07-01), Borgerson et al.
patent: 4253142 (1981-02-01), Banoux
patent: 4373180 (1983-02-01), Linde
patent: 4390946 (1983-06-01), Lane
patent: 4439827 (1984-03-01), Wilkes
patent: 4467415 (1984-08-01), Ogawa

Affiliated with

Also associated with

Rating

Multiple control stores for a pipelined microcontroller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple control stores for a pipelined microcontroller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple control stores for a pipelined microcontroller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-144966