Method and system including memory patching utilizing a transmis

Details Method and system including memory patching utilizing a transmis Method and system including memory patching utilizing a transmis

1996-07-12

1998-09-22

Gossage, Glenn

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711102, 711202, 39518206, 39518205, 371 102, G06F 1200, G06F 1300, G06F 1120

Patent

active

058130438

ABSTRACT:
A data processing system (100, 300) allows an individually mappable word of memory to patch a desired memory location. During operation, a memory system (130) monitors an address/control bus to determine when an access to a specified word in a system memory (120) occurs. When an access to the specified word occurs, address comparators (140) determine if a memory location to be patched is being accessed, and provides an active signal to the access control circuit (150), which prevents data flow with the system memory (120) and enables the data flow with a separate memory (170) by controlling a transmission gate 115. Therefore, the data access occurs from the separate memory and not the system memory.

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patent: 5051897 (1991-09-01), Yamaguchi et al.
patent: 5581697 (1996-12-01), Gramlich et al.

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