Microprogrammed control apparatus having a two-level control sto

Details Microprogrammed control apparatus having a two-level control sto Microprogrammed control apparatus having a two-level control sto

1978-11-17

1981-12-22

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 936

Patent

active

043074456

ABSTRACT:
A microprogrammed control structure for an integrated circuit data processor which employs a two-level control store designated as a micro control store and nano control store. An instruction decoder decodes each macro instruction to be executed by the data processor and causes a series of micro word addresses to be input to the micro control store. In response to such input, the micro control store outputs a corresponding number of nano address words for addressing the nano control store. The nano control store when addressed by the nano address words, outputs a control word to an execution unit for executing the macro instruction.

REFERENCES:
patent: 3599176 (1971-08-01), Cordero, Jr. et al.
patent: 3636522 (1972-01-01), Buschmann et al.
patent: 3766532 (1973-10-01), Liebel, Jr.
patent: 3768075 (1973-10-01), Reitsma et al.
patent: 3839705 (1974-10-01), Davis et al.
patent: 3886523 (1975-05-01), Ferguson et al.
patent: 3930236 (1975-12-01), Ferguson
patent: 3958221 (1976-05-01), Serra et al.
patent: 3991404 (1976-11-01), Brioschi et al.
patent: 4008462 (1977-02-01), Kanda
patent: 4032895 (1977-06-01), Lanza et al.
patent: 4037202 (1977-07-01), Terzain
patent: 4038643 (1977-07-01), Kim
patent: 4124893 (1978-11-01), Joyce et al.
patent: 4131835 (1978-12-01), Lange
patent: 4131943 (1978-12-01), Shiraogawa
patent: 4155120 (1979-05-01), Keefer et al.
patent: 4156278 (1979-05-01), Wilhite
patent: 4156279 (1979-05-01), Wilhite
patent: 4168523 (1979-09-01), Chari et al.
Frieder et al., "An Analysis of Code Density for the two Level Programmable Control of the Nanodata QM-1" in 10th Annual Workshop of Microprogramming, Oct. 1975, pp. 26-32.
Grasselli, "The Design of Program-Modifiable Microprogrammed Control Units" in IRE Transactions on Electronic Computers, EC-11, , No. 6, Jun. 1962, pp. 336-339.
Rosin et al., "An Environment for Research in Microprogramming and Emulation" in Communications of the ACM, vol. 15, No. 8, Aug. 1972, pp. 748-760.

Affiliated with

Also associated with

Rating

Microprogrammed control apparatus having a two-level control sto does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microprogrammed control apparatus having a two-level control sto, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microprogrammed control apparatus having a two-level control sto will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2370839