Interface between processor and special instruction processor in

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

395325, 364DIG1, 3642286, 3642401, 36493149, G06F 1516, G06F 930

Patent

active

052261700

ABSTRACT:
A processor and auxiliary processor for use in a digital data processing system, the auxiliary processor processing selected instructions, such as floating point instructions. The processor and auxiliary processor are interconnected by status lines, data lines and a bus to which other units in the system may also be connected. When the processor begins processing a selected instruction, it passes the instruction's operation code to the auxiliary processor over the data lines and enables the operands to be transferred to the auxiliary processor over the bus, along with information concerning each operand, which is transferred over the data lines. The processor then signals over the status lines that it is ready to receive the results. The auxiliary processor, when it has finished executing the special instruction, transmits a code over the status lines indicating it is sending the results, and transmits the condition codes over the data lines and the result data over the bus.

REFERENCES:
patent: 4161784 (1979-07-01), Cushing et al.
patent: 4179734 (1979-12-01), O'Leary
patent: 4215399 (1980-07-01), Pavicic et al.
patent: 4219873 (1980-08-01), Kober et al.
patent: 4270167 (1981-05-01), Koehler et al.
patent: 4310879 (1982-01-01), Pandeya
patent: 4335426 (1982-06-01), Maxwell et al.
patent: 4438493 (1984-03-01), Cushing et al.
patent: 4471432 (1984-09-01), Wilhite et al.
patent: 4490784 (1984-12-01), Ives et al.
patent: 4491907 (1985-01-01), Koeppen et al.
patent: 4509116 (1985-04-01), Lackey et al.
patent: 4514807 (1985-04-01), Nogi
patent: 4547849 (1985-10-01), Louie et al.
patent: 4583222 (1986-04-01), Fossum et al.
patent: 4729094 (1988-03-01), Zolnowsky et al.
Electronic Design 2, News & Technology, "Z8000 CPUs Expand Processing Power With New Instructions", Special Processors, pp. 33-34, Jan. 18, 1980.
Alexandridis, Microprocessor System Design Concepts 440-441 (Computer Science Press 1984).
"Interfacing the 32081 as a Floating Point Peripheral", New Electronics, vol. 18, No. 19, Oct., 1985, pp. 66, 69, 70, 72.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Interface between processor and special instruction processor in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interface between processor and special instruction processor in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interface between processor and special instruction processor in will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1696848

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.