Lock converting bus-to-bus interface system

Details Lock converting bus-to-bus interface system Lock converting bus-to-bus interface system

1991-06-17

1992-02-11

Shaw, Gareth D.

Boots, shoes, and leggings

364240, 3642401, 3642402, 3642405, 3642426, 36424292, 3642463, 3642557, 364DIG1, G06F 13364

Patent

active

050880284

ABSTRACT:
A bus-to-bus interface circuit maps a portion of the address space of each bus to a corresponding portion of the address space of the other bus. When a computer processor one one bus attempts to read or write access a mapped address, the bus interface circuit obtains control of the other bus and read or write accesses a corresponding address on the other bus. The interface circuit permits a bus master on the first bus to lock both buses so that it may perform several bus-to-bus data read or write operations without having to re-arbitrate for control of either bus after each operation.

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Intel Co., Microprocessor and Peripherals Handbook, "8289 Bus Arbiter", pp. 3-254 to 3-264 (1983). or

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