Electrical computers and digital processing systems: processing – Processing control – Arithmetic operation instruction processing
Reexamination Certificate
2005-07-26
2005-07-26
Coleman, Eric (Department: 2183)
Electrical computers and digital processing systems: processing
Processing control
Arithmetic operation instruction processing
C712S024000
Reexamination Certificate
active
06922773
ABSTRACT:
For use in a data processor comprising an instruction execution pipeline comprising N processing stages, a system and method of encoding constant operands is disclosed. The system comprises a constant generator unit that is capable of generating both short constant operands and long constant operands. The constant generator unit extracts the bits of a short constant operand from an instruction syllable and right justifies the bits in an output syllable. For long constant operands, the constant generator unit extracts K low order bits from an instruction syllable and T high order bits from an extension syllable. The right justified K low order bits and the T high order bits are combined to represent the long constant operand in one output syllable. In response to the status of op code bits located within a constant generation instruction, the constant generator unit enables and disables multiplexers to automatically generate the appropriate short or long constant operand.
REFERENCES:
patent: 4109310 (1978-08-01), England et al.
patent: 4595911 (1986-06-01), Kregness et al.
patent: 6006324 (1999-12-01), Tran et al.
patent: 6173305 (2001-01-01), Poland
patent: 6282633 (2001-08-01), Killian et al.
Brown Geoffrey M.
Faraboschi Paolo
Homewood Mark Owen
Jarvis Anthony X.
Starr Alexander J.
Coleman Eric
Hewlett--Packard Company
Jorgenson Lisa K.
Munck William A.
STMicroelectronics Inc.
LandOfFree
System and method for encoding constant operands in a wide... 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 and method for encoding constant operands in a wide..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for encoding constant operands in a wide... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3372781