Avago Technologies LSI53C1010 - Manual (Page 84)

3-44 The SCSI SCRIPTS Processor Instruction Set
Field(s) This command has the following fields:
The values in Table 3.13 define the SCSI information transfer phase. The
LSI53C10XX chips, with dual transition timing capabilities define two
transfer phases, ST for single transition timing, and DT for dual transition
timing.
Instruction
Type Block Move.
Indirect Indirect Addressing Mode.
0 - Use destination field as an address
1 - Use destination field as a pointer to an address
Table
Indirect Table Indirect Addressing Mode.
0 - Use Absolute addressing mode
1 - Use destination address as offset from the value of DSA
register
Opcode This field defines whether the instruction executes as a Block
Move or a Chained Block Move.
SCSI Phase These bits reflect the actual values of the SCSI phase lines.
Target Initiator
MOVE Opcode = 0 Opcode = 1
CHMOV Opcode = 1 Opcode = 0
Table 3.13 SCSI Phase Bit Values (MOVE Format)
1
Phase Message Command/Data Input/Output
DATA_OUT
2
(ST_DATA_OUT)
3
0 0 0
DATA_IN
2
(ST_DATA_IN)
3
0 0 1
COMMAND 0 1 0
STATUS 0 1 1
RES4
4
(DT_DATA_OUT)
3
1 0 0
RES5
4
(DT_DATA_IN
)3
1 0 1