HP Q153090901 - Manual (Page 175)

START/STOP (CD-ROM mode) 1Bh
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START/STOP
(CD-ROM mode)
1Bh
S TART/STOP is executed for 1Bh when the drive is in CD-ROM mode. When out of CD-ROM
mode, the LOAD/UNLOAD command, which shares the opcode, is executed.
Assuming that the pre-execution checks are passed, GOOD status is always reported.
Pre-execution checks:
Command descriptor block:
CDB fields:
Illegal Field Flag Link Bad LUN
Reservation Deferred Error Unit Attention
7 6 5 4 3 2 1 0
0 Operation Code (1Bh)
1 Logical Unit Number Reserved (0) Immed
2
Reserved (0)
3
4
Reserved (0) LoEj Start
5 Control
Immed This flag is ignored.
LoEj Load/Eject. This flag is ignored.
Start This flag is ignored.