Boots – shoes – and leggings
Patent
1989-09-29
1991-05-28
Harkcom, Gary V.
Boots, shoes, and leggings
364900, G06F 700
Patent
active
050200135
ABSTRACT:
A bidirectional variable bit shifter (10) is disclosed which comprises a latch/input driver (12) coupled to a word shift array (14) coupled to a nibble shift array (16) coupled to a bit shift array (18) coupled to a latch/output driver (20). The bidirectional variable bit shifter (10) further comprises three sense amps (24, 26, 28) coupled to the word, nibble and bit shift arrays (14, 16, 18) respectively, and the outputs of the three sense amps (24, 26, 28) are coupled to the input of a logic-OR gate (30) which has as its output an Indicator Bit signal. The word, nibble and bit shift arrays (14, 16, 18) are coupled to control decode circuit (22) which receives and decodes information from a Microcode Control Bus and from three shift count control buses. Parallel data bits are input to the bidirectional variable bit shifter (10) through the latch/input driver (12), and shifted 0, 16, 32, 48, 64 or 80 bits by the word shift array (14), 0, 4, 8, or 12 bits by the nibble shift array (16), and 0, 1, 2 or 3 bits by the bit shift array (18). The word, nibble and bit shift arrays (14, 16 and 18) send signals to the sense amps (24, 26, 28) respectively when significant data bits are shifted right of the least significant bit on right shift operations which in turn signal logic-OR gate (30). The control decode circuit (22) controls the direction of shfits, the number of bit positions shifted, and the fill node within the word, nibble and bit shift arrays (14, 16, 18).
REFERENCES:
patent: 3274556 (1966-09-01), Paul et al.
patent: 3961750 (1976-06-01), Dao
patent: 4023023 (1977-05-01), Bourrez et al.
patent: 4122534 (1978-10-01), Cesaratto
patent: 4149263 (1979-04-01), Prioste
patent: 4295202 (1981-10-01), Joyce et al.
patent: 4396994 (1983-08-01), Kang et al.
patent: 4437166 (1984-03-01), O'Brien
patent: 4472788 (1984-09-01), Yamazaki
patent: 4509144 (1985-04-01), Palmer et al.
patent: 4583197 (1986-04-01), Chappell et al.
patent: 4636976 (1987-01-01), Takla
patent: 4653019 (1987-03-01), Hodge et al.
patent: 4665538 (1987-05-01), Machida
patent: 4758972 (1988-07-01), Frazier
patent: 4827441 (1989-05-01), Someshwar et al.
patent: 4831571 (1989-05-01), Tokumaru
Antaki Patrick
Maher, III Robert D.
Cyrix Corporation
Harkcom Gary V.
Mai Tan V.
LandOfFree
Bidirectional variable bit shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bidirectional variable bit shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bidirectional variable bit shifter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-40754