3 third dword, Figure5.4 block move instruction – third dword, 3 i/o instructions – Avago Technologies LSI53C1000R User Manual
Page 256: 1 first dword, Third dword, I/o instructions, First dword, Block move instruction – third dword, First 32-bit word of the i/o instruction, Section 5.3, “i/o instructions
5-14
SCSI SCRIPTS Instruction Set
Version 2.2
Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
5.2.3 Third Dword
This section describes the structure of the third SCSI SCRIPTS Dword.
Figure 5.4
Block Move Instruction – Third Dword
Start Address
[63:32]
This 32-bit field specifies the upper Dword of a 64-bit
starting address of data to move to/from memory. This field
is copied to the
Dynamic Block Move Selector (DBMS)
register. The EN64DBMV bit in the
register must be set for this
Dword to be fetched.
5.3 I/O Instructions
This section contains information about the I/O Instruction register. It is
divided into first Dword and second Dword.
5.3.1 First Dword
This section describes the first Dword of the I/O Instruction register.
Figure 5.5
First 32-Bit Word of the I/O Instruction
IT[1:0]
Instruction Type – I/O Instruction
[31:30]
OPC[2:0]
Opcode
[29:27]
The following Opcode bits have different meanings,
depending on whether the LSI53C1000R is operating in
the initiator or target mode. Opcode selections
0b101–0b111 are considered Read/Write instructions, and
are described in
Section 5.4, “Read/Write Instructions.”
31
0
DBMS Register
31 30 29
27 26 25 24 23
20 19
16 15
11 10
9
8 7
6
5 4
3
2
0
DCMD Register
DBC Register
IT[1:0] OPC[2:0] RA TI Sel
R
ENDID[3:0]
R
CA TM
R
A
R
ATN
R
0
1
x
x
x
x
x
x
0
0
0
0
x
x
x
x
0
0
0
0
0
x
x
0 0
x
0 0
x
0
0
0