Method and apparatus for automatically detecting a selected cach

Details Method and apparatus for automatically detecting a selected cach Method and apparatus for automatically detecting a selected cach

1995-09-15

1999-04-27

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711105, 711106, 711167, G06F 1200, G06F 1300

Patent

active

058988564

ABSTRACT:
A mechanism for automatically detecting whether a selected type of cache memory is implemented within a cache memory element. The mechanism features a dedicated control line coupled between the cache memory element and a system controller. Logic circuitry is coupled to the control line to force the line to a first logic level in the event that the cache memory element has no connection to support the control line. However, if the cache memory element contains the selected type of cache memory, the logic circuitry is unable to for force the control line to go from a second logic level to the first logic level. After system reset, the system controller samples the voltage on the control line to determine whether the cache memory element is implemented with the selected type of cache memory.

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