1995-05-23
1996-11-19
Harvey, Jack B.
395728, G06F 1314
Patent
active
055772145
ABSTRACT:
An EISA-compatible computer system having an arbitration mechanism which incorporates a programmable hold delay register and counter for delaying a CPU hold request (DHOLD) by a programmable number of BCLK cycles after an EISA device wins the top level and CPU/EISA level arbitration. The CPU hold request is not delayed if a DMA/ISA device wins the arbitration.
REFERENCES:
patent: 4528626 (1985-07-01), Dean et al.
patent: 4556952 (1985-12-01), Brewer et al.
patent: 4638452 (1987-01-01), Schultz et al.
patent: 4787032 (1988-11-01), Culley
patent: 4807112 (1989-02-01), Hamasaki
patent: 4841178 (1989-06-01), Bisson
patent: 5041962 (1991-08-01), Lunsford
patent: 5125088 (1992-06-01), Culley
patent: 5155812 (1992-10-01), Ehlig et al
patent: 5168568 (1992-12-01), Thayer et al.
patent: 5170481 (1992-12-01), Begun et al.
patent: 5212795 (1993-05-01), Hendry
patent: 5220660 (1993-06-01), Yoshizaisa et al.
patent: 5239631 (1993-08-01), Bowry et al.
patent: 5269006 (1993-12-01), Dohse et al.
patent: 5287481 (1994-02-01), Lin
patent: 5388223 (1995-02-01), Guthrie et al.
Intel Corp, 82350DT Eisa Chip Set (Sep. 1991).
Intel Corp., 82350 EISA Chip Set, Peripheral Components Data Book (Jul. 1990).
Intel Corp., 82596CA High-Performance 32 Bit Local Area Network Coprocessor (Nov. 1991), especiall pp. 11-12.
Intel Corp., i486.TM. Processor Hardware Reference Manual (1990), pp. 7-38 through 7-49.
MicroDesign Resources, Inc. PC Chip Sets (1992), pp. 2-1 through 2-18.
Texas Instruments Corp., TACT 84500 EISA Chip Set, Preview Bulletin (1991).
OPTi, Inc., OPTi-386WB PL/AT Chip Set (82C391/82C392/82C206), Data Book, Version 1.2 (Mar. 28, 1991).
OPTi Inc., HiD/386 AT Chipset High Integration Direct Mapped Cache AT 82C381/82C382D-25/33, Data Book (Nov. 1989).
Harvey Jack B.
OPTi Inc.
Sheikh Ayaz R.
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