Emerson MVME147 manual +$00

7

SCSI PACKETS

2.Buffered writes are used to allow time for additional data to be transferred, thus keeping the tape streaming. If non-buffered, controller returns status only after all data has been written to the tape. If buffered, controller returns a good status when all data has been transferred to the buffer, although all data may not yet have been written to the tape.

Note

This work area is used by the SCSI firmware to build the SCSI command and to return additional information. The user does not build this table. Shown below are the return parameters. This 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.

Even Byte \

Odd Byte \

	FC		B8		74		30
+$00				Reserved
				.
				.
				.
+60			Block Number in Error (MSW)
+62			Block Number in Error (LSW)
+$64		SCSI Controller Status			0		0
+$66			Transfer Address (MSW)
+$68			Transfer Address (LSW)
+$6A		0	0		0		0
+$6C		0	0		0		0
+$6E		0	0		0		0
+$70		0	0		0		0
+$72		Command Error Status				Offset
+$74			Sense Data Block
				.

7-30