ZiLOG System 8000 - Page 283

HRM 2ilog
HRM
b) the source and destination buffers are com-
pared.
c) the queue element is re-randomized, and the
new disk address is compared with all other
addresses in the queue for uniqueness.
d) the source buffer is filled with new random
data.
TEST 2:
The random-length transfer test tests random-length
writes and reads. In this test, the source and desti-
n~tion buffer addresses are random, and the buffers may
cross segment boundaries (not allowed in the single-
sector test). The buffer sizes are random.
During initialization of the random-length transfer
test, segments 1 - 3 are filled with a background pat-
tern ('AAAA'). For each lap, there are 64 repetitions
of the following:
1) A randomly chosen source' buffer is filled wi th
random data. Th~ buffer must be in segments 1 -
.3.
2) The source buffer is written to a random disk
address.
3) The disk address is read into a random destination
buffer. The destination buffer must be in seg-
ments 1 - 3.
4) The source and destination buffers are compared.
5) The source and destination buffers are filled with
background data. Then the entire background is
checked to be sure there has been no corruption of
memory outside of the source and destination
buffers.
SMDTEST repeats test 1 or test 2 n times, where n is
the value in the HREPS field of the SADIE test line.
If HREPS = 0, SMDTEST repeats the test until the user
aborts it.
SMDTEST always begins with the same random-number seed
rat each invocation, but it does not reset the seed
between laps. Therefore, running SMDTEST 100 times is
not the same as running SMDTEST with HREPS = 100.
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Zilog
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