Patent
1996-06-21
1999-03-16
Sheikh, Ayaz R.
395281, 395282, 395842, 395872, G06F 1300
Patent
active
058840508
ABSTRACT:
A method and apparatus for maximizing the performance of DMA transfers over a PCI.TM. bus are provided which includes a Per-Channel Retry count, Double Buffer Management, Wait Enable functionality, Back Up register functionality, Gather/Scatter mapping, a method for minimization of PIO writes, Read Semaphore functionality, a method for servicing of DMA transfers during FMU latency periods, Valid bit functionality, high and low water thresholds, and re-usable page tables.
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patent: 5386532 (1995-01-01), Sodos
patent: 5530902 (1996-06-01), McRoberts et al.
patent: 5613162 (1997-03-01), Kabenjian
patent: 5659798 (1997-08-01), Blumrich et al.
patent: 5682483 (1997-10-01), Wu et al.
patent: 5784592 (1998-07-01), Gulick et al.
Adiletta Matthew James
Bernstein Debra
Ho Samuel
Wheeler William R.
Wolrich Gilbert M.
Digital Equipment Corporation
Sheikh Ayaz R.
Thlang Eric S.
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