Emerson MVME147 manual where n = number of blocks or filemarks to Space

	Space (Blocks, Filemarks, End of Recorded Media) Packet
mode $02 =	Space sequential filemarks (if supported by
	drive
mode $03 =	Space to end of recorded media

where n = number of blocks or filemarks to Space.

Some drives support spacing backwards by using negative 2’s complement number n. Refer to the drive manual.

The table below shows the space packet.

Even Byte \

Odd Byte \

	FC			B8	74		30
+$00			Controller LUN			Device LUN
+$02			Status Byte 0		Status Byte 1 (Note 1)
+$04			Number of Data Blocks/Filemarks (MSW)
+$06			Number of Data Blocks/Filemarks (LSW)
+$08		0		0	0		0
+$0A		0		0	0		0
+$0C		0		0	0		0
+$0E			Mode		0		0
+$10			0		0		0
0							+$12
0			0		0		0
+$14		0		0	Function Code (38)
+$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

7

7-47