Circuit for resolving I/O port address conflicts

Details Circuit for resolving I/O port address conflicts Circuit for resolving I/O port address conflicts

1993-08-27

1996-10-01

Barry, Lance Leonard

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34082507, 34082552, 395834, 395835, 395836, 395284, 364DIG1, 3642383, 3642802, G06F 1300

Patent

active

055618138

ABSTRACT:
An input/output port address selection circuit for a device that couples to a local bus of a computer operates in two modes. In a first mode, the I/O port address is maintained as the last I/O port address saved. In the second mode, the selection circuit changes the I/O port address and saves the change when the circuit is reset. A computer user resolves I/O port address conflicts by placing the selection circuit in the second mode then resetting the system until the conflict is resolved and the system works properly. The selection circuit is then placed and left in the first mode so that the non-conflicting address is reused. Non-volatile memory, an electrically erasable-programmable read-only memory, is used for saving an index which indicates the last I/O port address set. The non-volatile memory is changed when the selection circuit is operated in the second mode.

REFERENCES:
patent: 4124888 (1978-11-01), Washburn
patent: 4633392 (1986-12-01), Vincent et al.
patent: 4660141 (1987-04-01), Ceccon et al.
patent: 4675813 (1987-06-01), Locke
patent: 4730251 (1988-03-01), Aakre et al.
patent: 4773005 (1988-09-01), Sullivan
patent: 4775931 (1988-10-01), Dickie et al.
patent: 4899274 (1990-02-01), Hansen et al.
patent: 5014193 (1991-05-01), Garner et al.
patent: 5038320 (1991-08-01), Heath et al.
patent: 5274771 (1993-12-01), Hamilton et al.
patent: 5301276 (1994-04-01), Kimura
patent: 5317093 (1994-05-01), Cuenod et al.
patent: 5367640 (1994-11-01), Hamilton et al.
patent: 5402528 (1995-03-01), Christopher et al.
patent: 5410717 (1995-04-01), Floro
patent: 5428748 (1995-06-01), Davidson et al.
patent: 5434562 (1995-07-01), Reardon
Texas Instruments SN75C091A SCSI Bus Controller Data Manual, Texas Instruments, Inc., 1990.
Biagioni, E. et al., "Designing a Practical ATM Lan" in IEEE Network, vol. 7, No. 2 (Mar. 1993) pp. 32-39.

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