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SCSI PACKETS
7-16
7
$20 xxxxxxxx xxxxxxxx Address of 384-byte
SCSI RAM area
(MSW)
$22 xxxxxxxx xxxxxxxx Address of 384-byte
SCSI RAM area
(LSW)
This SCSI RAM work
area cannot be
deallocated or moved
except after a detach
or reset command.
The firmware uses
this
area for the SCSI CDB
and local pointers
and variables.
$24 xxxxxxxx xxxxxxxx Logical bytes per
block must be an
$26 xxxxxxxx xxxxxxxx integer multiple of
physical bytes per
block and if track 0 is
half the density of the
rest of the disk, then
the sectors per track
field must be an even
value. This prevents
a
half sector overrun of
data.
$28 xxxxxxxx Defines the number
of alternate sectors
per
zone to reserve for
alternates. The zone
can
be described as either
a track or a cylinder,
as specified by bit 11
of the SCSI drive