DEC DECstation 5000 Model 100 Series, Maintenance Manual

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SCSI Controller Tests
The following entries explain each SCSI controller test and its
test commands and error messages.
SCSI Controller Chip Test
The SCSI controller chip test checks the SCSI controller chip’s
operation. To run the SCSI controller chip test, type x11, where
x represents the unit number of the SCSI controller you want
to test, and press Return.
SCSI controller chip test parameters and error codes
Table F-52 describes the parameters used in SCSI controller
chip test error messages. Table F-53 lists error codes used in
test error messages.
Table F-52. SCSI Controller Chip Test Parameters
Parameter Description
P1 Expected read value.
P2 Actual read value.
Table F-53. SCSI Controller Chip Test Error Codes
Error Code Description
1 Chip reset failed.
2 Values read from configuration register did not match.
3 Error occurred in first in first out load.
4 Error occurred in counter transfer.
F–40 Test Commands and Messages Produced by Version PDE3 ROM Chips