Processor for discriminating between compressed and non-compress

Details Processor for discriminating between compressed and non-compress Processor for discriminating between compressed and non-compress

1994-10-17

1997-07-29

Kriess, Kevin A.

395383, G06F 930

Patent

active

056528523

ABSTRACT:
When compressed program codes which are divided into modules in accordance with a branch instruction and its branching address are inputted to a processor, they are expanded by an expansion unit and decoded to an original (non-compressed) program codes. Timing of output of the decoded program codes to an execution control unit is controlled by a timing control unit. The execution control unit executes the program, and in a case where it is a branch instruction, the unit outputs its branching address by a memory management unit, and then the program is decoded by inputting the modules designated by said address and executed. Further, an instruction which indicates compressed codes versus non-compressed codes is included in the program codes. The instruction is read by an instruction discrimination unit where the instruction is discriminated as to whether or not it is in a compressed form. The program codes are decoded depending on the discrimination result.

REFERENCES:
patent: 5237460 (1993-08-01), Miller et al.
patent: 5313614 (1994-05-01), Goettelmann et al.
patent: 5357614 (1994-10-01), Pattisam et al.
patent: 5359659 (1994-10-01), Rosenthal
patent: 5414850 (1995-05-01), Whiting
Belk, Leland, L., "System Software", Addison-Wesley, 1990, pp. 124-129 (No Author) Motorola Microprocessors Data Manual, 1981, pp. 4-168, 4-169, 4-172 through 4-179. 08/087,045 US Application filed Jul. 7, 1993 Masayuki Yokota.
Koopman, Phil, "the WISC Concept: A proposal for a writable instruction set computer", BYTE, p. 187, vol. 12, No. 4 Apr. 1987.

Affiliated with

Also associated with

Rating

Processor for discriminating between compressed and non-compress does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Processor for discriminating between compressed and non-compress, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processor for discriminating between compressed and non-compress will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-639583