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To assist in troubleshooting disk
operations, B9 through BF of the MPX 1
storage contain information that is of
value to the C E in his trouble
analysis:
B9 - Sense 0 byte
BA - Sense
1
byte
BB - Sense
2
byte
BC - Sense 3 byte
BD
-
File Address
BE - File Conmand
BF - Scan Condition
Same bit
significance as 2030
errors.
Current or last file
address
~orked ~ith.
Last file command
issued.
Is file scanning
Hi/Lo/Eq?
See Figure 5-19 for disk operational
flo~.
5-35
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