Combined IDE and SCSI disk controller interface for common hardw

Details Combined IDE and SCSI disk controller interface for common hardw Combined IDE and SCSI disk controller interface for common hardw

1997-06-26

1999-07-13

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710 3, 710 62, 710 63, 712 32, 375220, 711112, G06F 1338

Patent

active

059220627

ABSTRACT:
A universal disk controller for microprocessor systems is capable of use as a PCI interface with either SCSI drives or IDE drives. To effect selection of the appropriate one of the IDE or SCSI drives for use with the interface, a configuration logic circuit is coupled with a PCI bus master interface to select an IDE state machine or an SCSI state machine, both of which are coupled with a combined IDE/SCSI interface having common pins for connection to the appropriate IDE or SCSI drive for operation with the controller. Consequently, separate chips for providing interfaces between a PCI bus and either an IDE or an SCSI drive are not required. The system permits switching between IDE and SCSI drives according to the application with which it is being used.

REFERENCES:
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patent: 5243623 (1993-09-01), Murdock
patent: 5264958 (1993-11-01), Johnson
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patent: 5745795 (1998-04-01), Pecone et al.
patent: 5768612 (1998-06-01), Nelson
patent: 5787290 (1998-07-01), Capps, Jr. et al.

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