Software controlled method of issuing hardware control commands

Details Software controlled method of issuing hardware control commands Software controlled method of issuing hardware control commands

1991-10-28

1993-03-23

Anderson, Lawrence E.

Boots, shoes, and leggings

3642384, 3642548, 3642568, 3642611, 3649335, 364948, 3649585, 3642631, 3649613, 364DIG1, 395250, 395375, 395400, G06F 940, G06F 944, G06F 1200

Patent

active

051971410

ABSTRACT:
A request is issued in response to an instruction to a memory buffer control unit in accordance with one of first and second specific access methods. The request comprises a request code and a memory address. The first specific access method comprises the steps of holding preliminarily the request code in a register, producing the memory address by using an address syllable included in the instruction, and delivering the memory address and the request code held in the register to the memory buffer control unit. The second specific access method comprises the steps of holding preliminarily indication data in a register, judging whether or not an address syllable has in the instruction a base register number equal to a specific number, producing an effective address by using the address syllable, and delivering the request code and the memory address to the memory buffer control unit by using the indication data held in the register and the effective address when the base register number is equal to the specific number.

REFERENCES:
patent: 3949378 (1976-04-01), Crabb et al.
patent: 4068299 (1978-01-01), Bachman
patent: 4068300 (1978-01-01), Bachman
patent: 4177510 (1979-12-01), Appell et al.
patent: 4400774 (1983-08-01), Toy
patent: 4583165 (1986-04-01), Rosenfeld
patent: 4742452 (1988-05-01), Hirokawa
patent: 4797813 (1989-01-01), Igarashi
patent: 4831515 (1989-05-01), Kamada et al.
patent: 4916606 (1990-04-01), Yamaoka et al.
patent: 4954944 (1990-09-01), Ikeda

Affiliated with

Also associated with

Rating

Software controlled method of issuing hardware control commands does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Software controlled method of issuing hardware control commands , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Software controlled method of issuing hardware control commands will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1358538