IBM 5280 Technical Newsletter page 15

Page of SY31-Q600-1
As updated January 30, 1981
By
TN
L
SN20-9543
931
POWER-ON CHECKOUT AND IPL (continued)
Condition
Code In Hex
2A
2C
20
2E
30
32
34
38
3C·
FF
176
Description
Control address mark detected: the diskette attachment detected a control address
mark on the diskette operation being performed when no control address mark was
expected.
10 mismatch: the diskette attachment found an 10 on the diskette that did not match
the 10 that it was instructed to find.
The keyboard/display attachment has a data station attached and ready and
the timer is working.
Sense 2 invalid: during a diskette read or write operation the bits set in the sense
register 2 are invalid.
Volume label error: the volume label format is not correct.
The keyboard/display attachment has a dual data station attached and ready
and the timer is working.
Non-IPL diskette: the diskette in this drive is not an IPL diskette.
Diskette
type
error: the diskette type (type 1 or 20) on the volume label does not
match the diskette being used.
Label error: the header label format is not correct.
IPL limits wrong: the IPL data set size is greater than the system main storage size.
Not used.
All diskette attachment checks are complete.
931