ZiLOG System 8000 Hardware Reference Manual page 233

HRM
TEST NAME
Zilog HRM
WDCCRC - a non-destructive verification of the Winchester
Disk Data, Cyclic Redundancy Checks (CRCs)
PARAMETERS
Disk drive to be tested (default=O)
DESCRIPTION
WDCCRC reads all tracks of the selected drive. If an error
is detected, a message is displayed and logged. WDCCRC
repeats n times, where n is the #REPS in the test line.
ERROR MESSAGES
WDCCRC can issue the following error messages
where:
u
= unit number (decimal)
ccc = cylinder number' (decimal)
h
= head number (decimal)
S3
= sector number (decimal)
dr = contents (hex) of drive ready register
ds = contents (hex) of disk status register
oe = contents (hex) of operation error status register
os = contents (hex) of other status register
xx = value (hex) of command issued to the WDC
DISK NOT RESPONDING DURING INIT
WDC failed to respond within a reasonable time after
the test began.
INVALID COMMAND DISK=(u,ccc,h,ss) COMMAND ISSUED=xx
Invalid command opcode or out-of-range command parame-
ters.
HARD TRK READ DISK=(u,ccc,h,ss) DR=dr DS=ds OE=oe OS=os
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Zilog
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