ZiLOG System 8000 Hardware Reference Manual page 280

HRH
TEST NAME:
Zilog
HRM
SMDMEDIA - a thorough write-read-compare test of a
drive, using various data patterns.
PARAMETERS:
Parameter
1
= the disk unit to be tested (Default: unit
=
0).
Th era
n
ge
0
fun i t
n
urn be r s are
° -
3.
Parameter
2
indicates whether the test should compare
source and destination buffers after write and read.
If compare =
0,
the compare step is skipped. Other-
wise, the compare is done. With the compare step, the
test is more thorough, but it takes considerably more
time to execute. (Defaul t: compare =
1)
Parameter 3 indicates whether the test should use all
data patterns or only the worst-case data pattern. If
allpat =
0,
only the worst-case pattern ('B6D') is
used. Otherwise, all patterns ('AAAA', 'FFFF' and
'B6D') are used. (Default: allpat =
1)
DESCRIPTION:
SMDMEDIA begins with the start-up procedure
in the INTRODUCTION TO SMD DIAGNOSTICS.
during the start-up procedure cause SMDMEDIA
the test.
described
Any errors
to abort
During each repetition of the media test, the following
steps are done for each data pattern to be used:
1) A source buffer the size of a full track is filled
with the data pattern.
2) For every track on the medium:
a) The source buffer is written to the track.
b) The track is read into a destination buffer.
c) The source and destination buffers are com-
pared.
SMDMEDIA repeats the media test n times, where n is the
value in the HREPS field in the SADIE test line. If
#REPS=O, SMDMEDIA repeats until the user aborts the
test.
A-49 Zilog A-49