Emerson MVME147 manual +$12

					Read/Write Packet
	+$12	0	0	0		0
	+$14	Command Control		Function Code (00, 04)
	+$16	Interrupt Level			Vector Number
	+$18	Status Byte 2		Status Byte 3 (Note 1)
$00		00000xxx			Controller logical unit
					number
$01		00000xxx			Device logical unit
					number
$02		xxxxxxxx			Status from SCSI
					firmware (byte 0)
					(Note 1)
$03		xxxxxxxx			Status from SCSI
					firmware (byte 1)
					(Note 1)
$04		xxxxxxxx	xxxxxxxx		Memory Address
					(MSW)/scatter/gathe
					r
					table address if
					scatter/gather count
					> 0
$06		xxxxxxxx	xxxxxxxx		Memory Address
					(LSW)/scatter/gather
					table address if
					scatter/gather count
					> 0
$08		xxxxxxxx	xxxxxxxx		Sector Number
					(MSW)
	$0A	xxxxxxxx	xxxxxxxx		Sector Number (LSW)
	$0C	xxxxxxxx	xxxxxxxx		Number of sectors to
					transfer/number
					of logical
					blocks/bytes to
					transfer
	$0E	00000000	00000000		Reserved
$10		xxxxxxxx	xxxxxxxx		Scatter/gather count,
					number of entries

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