Patent
1995-03-01
1997-10-21
Beausoliel, Jr., Robert W.
G06F 1300
Patent
active
056805373
ABSTRACT:
A method and apparatus for isolating an error in a system having a controller or the like which access a user via an interface device. The controller or the like may be coupled to the interface device via a first bus and the interface device may be coupled to the user via a second bus. The controller or the like may detect an error in a data transfer from the user to the controller via the interface device, and may isolate the error to the second bus/interface device or the first bus/controller. This up-front error isolation may reduce the amount of analysis required by a service technician after a corresponding PC board or the like is removed from the system, thereby reducing the cost thereof.
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Brunmeier Terry J.
Byers Larry L.
Miller John A.
Robeck Gary R.
Beausoliel, Jr. Robert W.
Elmore Stephen C.
Unisys Corporation
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