Patent
1995-06-06
1998-07-14
Lee, Thomas C.
395829, 395823, G06F 1342, G06F 13368
Patent
active
057817960
ABSTRACT:
A device and method for assigning an input/output (I/O) base address from a plurality of I/O base addresses to a circuit card in need of an I/O base address and connected to a common bus is disclosed. The method, as carried out by the device, includes the steps of: selecting an I/O base address for consideration; attempting a read operation to read data out of registers of a circuit card corresponding to the I/O address; sensing whether the read operation has resulted in data or a high impedance state on the common bus, the high impedance state indicating that no device has been assigned to the I/O base address and the data indicating that the address is already assigned to another device; assigning the address to the device-in-need if the high impedance state is sensed on the common bus; and selecting another I/O base address for consideration if the data is sensed on the common bus.
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Lee Thomas C.
LG Semicon Co. Ltd.
Perveen Rehana
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