Rom Test - HP 64000 Reference Manual

Logic development system
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SYSTEM OVERVIEW MANUAL
•••••••••••••••••••••••••••• PERF"ORMANCE \lER I F" I CAT ION ••••••••••••••••••••••••••••
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HExT
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TESTS _ _ _ _ _ _ _ _ _ _ _
MODEL 64000
Purpose: Verifies ROM operation. This test compares the checksum of each ROM to its
expected value. If all checksums are correct, the test will pass. In order to keep uninstalled
ROMs from being displayed, the test routine ignores the test result if checksums of the upper
and lower byte of a ROM pair are zero. Since a hardware problem could cause this same result,
the number of ROMs detected with a nonzero checksum is displayed.
Figure 2-7. ROM Test
2-24

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