Emerson MVME147 manual xxxxxxxx

7

SCSI PACKETS

$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

7-16