Excavating
Patent
1991-01-04
1996-02-13
Kulik, Paul V.
Excavating
395575, 395700, 371 111, 364DIG2, 3649485, 36494461, 3649752, 3649764, 364945, 3649295, 3649292, G06F 1300, G06F 704
Patent
active
054918049
ABSTRACT:
A data processing system includes a planar board having a central processing unit (CPU), a main memory unit, and input/output (I/O) sockets or slots, each adapted to receive a selected one of a plurality of different and/or similar option cards. Each card contains (or is connected to) and controls a respective peripheral device; and each card is pre-wired with an ID value corresponding to its card type. Software programmable option registers on each card store parameters such as designated default (or alternate) address information, priority levels, and other system resource parameters. A setup routine, during initial power-on, retrieves and stores the appropriate parameters in the I/O cards and also in slot positions in main memory, one position being assigned to each slot on the board. Each slot position is adapted to hold the parameters associated with the card inserted in its respective slot and the card ID value. That portion of main memory containing the slot positions is adapted to maintain the parameter and ID information by means of battery power when system power fails or is disconnected, i.e., a nonvolatile memory portion. Subsequent power-on routines are simplified by merely transferring parameters from the table to the card option registers if the status of all the slots has not not changed since the last power-down, system reset, or channel reset.
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Heath Chester A.
Langgood John K.
Valli Ronald E.
Brown, Jr. Winfield J.
Buchenhorner Michael J.
International Business Machines Corp.
Kulik Paul V.
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