Method and circuit for performing a shift arithmetic right opera

Details Method and circuit for performing a shift arithmetic right opera Method and circuit for performing a shift arithmetic right opera

1997-12-19

2000-03-07

Malzahn, David H.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 501

Patent

active

060353104

ABSTRACT:
A method and circuit for performing a shift arithmetic right operation as disclosed. The circuit employs and the method uses an inverter which is configured to receive a sign bit of a first n bit operand which is subject to a shift arithmetic right instruction. The inverter is configured to generate a one bit operand representing a logical inversion of the sign bit of the first n bit operand. A shifter is also provided to receive the first n bit operand. The shifter shifts the first n bit operand according to a shift count c provided by the shift arithmetic right instruction. The shifter generates a second n bit operand which represents the first n bit operand shifted by c bit. A sign fill circuit is provided to receive the one bit operand from the inverter and the second n bit operand from the shifter. The sign fill circuit generates a result operand having n bits from the one bit operand in the second n operand. The result operand represents the first operand shifted by c bits and sign filled.

REFERENCES:
patent: 4472788 (1984-09-01), Tamazaki
patent: 4490809 (1984-12-01), Ueda et al.
patent: 4631703 (1986-12-01), Sakamoto
patent: 4831571 (1989-05-01), Tolumaru
patent: 4839839 (1989-06-01), Tokumaru et al.
patent: 4872128 (1989-10-01), Shimizu
patent: 4890251 (1989-12-01), Nitta et al.
patent: 5379240 (1995-01-01), Byrne
patent: 5416731 (1995-05-01), Dang et al.
patent: 5553010 (1996-09-01), Tanihira et al.
patent: 5671166 (1997-09-01), Omote
patent: 5726926 (1998-03-01), Makino
patent: 5822231 (1998-10-01), Wong et al.
patent: 5844828 (1998-12-01), Fujimura et al.

Affiliated with

Also associated with

Rating

Method and circuit for performing a shift arithmetic right opera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and circuit for performing a shift arithmetic right opera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit for performing a shift arithmetic right opera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-372562