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CUSTOM SCSI PACKETS
2-18
2
*****************************COMMAND TABLE FOR THE WRITE
COMMAND**************
CT2 DC.B %01000000
* X LINK FLAG OFF
* X PARITY CHECKING ENABLED
* X DMA ENABLED
* X CUSTOM SEQ. FLAG=> FIRMWARE CHECKS STATUS
* X FIRMWARE USES SCSI RULES (RESELECT, ETC.)
* X RESERVED.
X NO SCATTER/GATHER
X ASYNC SCSI TRANSFER
DC.B 0 RETRY COUNT=0
DC.L 0 NO LINK ADDRESS PROVIDED.
DC.W 6 COMMAND LENGTH = 6 (GROUP 0 COMMAND)
DC.B $0A WRITE COMMAND
DC.B $00 LUN=0, BLOCK ADDR MSB=0
DC.B $00 BLOCK ADDR
DC.B $86 (FULL BLOCK ADDR=$00086)
DC.B $04 4 BLOCKS REQUESTED
DC.B $00 CONTROL BYTE: FLAG BIT=0, LINK BIT=0.
DC.B 00 DON’T CARE
DC.B 00 DON’T CARE
DC.B 00 DON’T CARE
DC.B 00 DON’T CARE
DC.B 00 DON’T CARE
DC.B 00 DON’T CARE
DS.B 01 USER’S STATUS BYTE IS STORED HERE
DC.B 07 SCSI INITIATOR ADDRESS = $07
DC.L $400 4 BLOCKS * $100 BYTES/BLOCK= $400 BYTES
DC.L BUFF DATA BUFFER ADDRESS
DC.W 1 MESSAGE IN AREA ALLOCATION= 1 BYTE
DC.L MSIN2 MESSAGE IN AREA POINTER
DC.W 1 MESSAGE OUT AREA ALLOCATION = 1 BYTE
DC.L MSOUT2 MESSAGE OUT AREA POINTER
DS.B 342 REMAINING OF THE 384 BYTE COMMAND TABLE
MSIN2 DS.B 1 MESSAGE IN AREA FOR COMMAND TABLE #1
MSOUT2 DC.B $00 NO MESSAGE OUT PHASE FOR THE SECOND
COMMAND.