Microprogrammed system having single microstep apparatus

Details Microprogrammed system having single microstep apparatus Microprogrammed system having single microstep apparatus

1979-02-16

1983-06-07

Thomas, James D.

Boots, shoes, and leggings

365222, G06F 1300

Patent

active

043874231

ABSTRACT:
In a data processing system which includes a central processing unit and one or more main memory units comprised of semiconductor dynamic random access memory chips, logic is provided within the system to provide for the single stepping of the central processing unit clock thereby allowing for the execution of one CPU cycle. The system logic is organized such that the memory refresh command signals, which are normally generated by the CPU, are generated by the single step logic thereby maintaining the contents of the main memory modules. The logic of the overall data processing system is organized such that most transfers of information between the main memory, the CPU and I/O controllers, to which peripheral devices are connected, may take place in the single step mode of operation without the loss of information.

REFERENCES:
patent: 3077984 (1963-02-01), Johnson
patent: 3609391 (1971-09-01), Hatano
patent: 3786430 (1974-01-01), Hajdu et al.
patent: 3796998 (1974-03-01), Appelt
patent: 3810129 (1974-03-01), Behman et al.
patent: 3813531 (1974-05-01), King
patent: 3846765 (1974-11-01), Devries
patent: 3909802 (1975-09-01), Cassarino, Jr.
patent: 3980935 (1976-09-01), Worst
patent: 4048481 (1977-09-01), Bailey, Jr. et al.
patent: 4063221 (1977-12-01), Watson et al.
patent: 4106108 (1978-08-01), Cislaghi et al.
patent: 4112513 (1978-09-01), Elsner

Affiliated with

Also associated with

Rating

Microprogrammed system having single microstep apparatus 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 system having single microstep apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microprogrammed system having single microstep apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2345942