Boots – shoes – and leggings
Patent
1994-01-14
1995-06-20
Shin, Christopher B.
Boots, shoes, and leggings
395275, 395725, 364240, 364229, 3642306, 364DIG1, G06F 1300
Patent
active
054267404
ABSTRACT:
An improved signaling protocol for use in a multiprocessor system enables concurrent access to a common system bus during an I/O bus access. This reduces the system bus idling time without introducing complexities into the system bus architecture which might otherwise reduce the overall bus bandwidth increase. The improved bus architecture uses a system generated I/O bus busy (IOBUS.sub.-- BSY-) signal to indicate to all of the processors that the I/O bus is in use and that all other I/O requests must be held until the current transaction is completed. By preventing the other processors from executing an I/O request, the system bus does not have to be remain idle and can be used for memory-to-processor and for processor-to-processor transactions while the I/O bus is in use. By reducing the amount of time that the system bus is idle, the overall system bus performance is greatly increased.
REFERENCES:
patent: 3959775 (1976-05-01), Valassis et al.
patent: 4598362 (1986-07-01), Kinjo et al.
patent: 4737932 (1988-04-01), Baba
patent: 4837682 (1989-06-01), Culler
patent: 5003463 (1991-03-01), Coyle et al.
patent: 5065313 (1991-11-01), Lunsford
patent: 5125080 (1992-06-01), Fleva et al.
patent: 5170481 (1992-12-01), Begun et al.
patent: 5220651 (1993-06-01), Larson
patent: 5253348 (1993-10-01), Scalise
patent: 5261057 (1993-11-01), Coyle et al.
patent: 5263139 (1993-11-01), Testa et al.
patent: 5280589 (1994-01-01), Nakamura
patent: 5327545 (1994-07-01), Begun et al.
patent: 5353417 (1994-10-01), Fuoco et al.
Description of Backoff Input from Intel i486 Microprocessor Data Book, Apr. 1989, p. 89.
Description of Backoff Sequence from PCI Local Bus Specification, Revision 2.0, Apr. 30, 1993, pp. 33-38.
PCI Local Bus Specification, Revision 2.0, Apr. 30, 1993, pp. 1-198.
AST Research Inc.
Shin Christopher B.
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