System including central processing unit

Details System including central processing unit System including central processing unit

1990-08-17

1994-04-05

Bowler, Alyssa H.

Boots, shoes, and leggings

395250, 395550, 364240, 3642403, 364DIG1, 364DIG2, G06F 1204

Patent

active

053013387

ABSTRACT:
A central processing unit includes a programmable logic array, a timing control unit, a predecoder, a data input/output part, and a processing part. The processing part carries out a predetermined operation on m-bit low-order data from among data which is composed of n bits and which is read out from a memory and m-bit high-order data from among the data composed of n bits, and outputs a carry signal when the predetermined operation on the m-bit low-order data results in a carry. When the operation code is a read modify write instruction and when the processing part outputs the carry signal, the programmable logic array controls the input/output part so that only the result of the predetermined operation on the m-bit low-order data is written into the memory.

REFERENCES:
patent: 3962684 (1976-06-01), Caudel et al.
patent: 3978456 (1976-08-01), Moran
patent: 4402042 (1983-08-01), Guttag
patent: 4449184 (1984-05-01), Pohlman, III et al.
patent: 4514825 (1985-04-01), Nording et al.
patent: 4694391 (1987-09-01), Guttag et al.
patent: 4761755 (1988-08-01), Ardini, Jr. et al.
patent: 5001664 (1991-03-01), Makita et al.
patent: 5155843 (1992-10-01), Stamm et al.
Mick, John R., et al., Microprogramming A Bipolar Microprocessor, Advanced Micro Devices Microprogramming Handbook, 1976, pp. 1-1 through 1-15.

Affiliated with

Also associated with

Rating

System including central processing unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System including central processing unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System including central processing unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-520365