Table 5.1 read/write instructions, Read/write instructions, Table 5.1 – Avago Technologies LSI53C896 User Manual
Page 253
Read/Write Instructions
5-25
Version 3.3
Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
•
Write one byte (value contained within the SCRIPTS instruction) into
any chip register.
•
Move to/from the
SCSI First Byte Received (SFBR)
from/to any
other register.
•
Alter the value of a register with AND, OR, ADD, XOR, SHIFT LEFT,
or SHIFT RIGHT operators.
•
After moving values to the
SCSI First Byte Received (SFBR)
, the
compare and jump, call, or similar instructions check the value.
•
A Move-to-SFBR, followed by a Move-from-SFBR, performs a
register to register move.
Table 5.1
Read/Write Instructions
Operator
Opcode 111
Read-Modify-Write
Opcode 110
Move to SFBR
Opcode 101
Move from SFBR
000
Move data into register.
Syntax: “Move data8 to
RegA”
Move data into
register. Syntax: “Move
data8 to SFBR”
Move data into register.
Syntax: “Move data8 to
RegA”
001
1
Shift register one bit to the
left and place the result in
the same register. Syntax:
“Move RegA SHL RegA”
Shift register one bit to the
left and place the result in
the
register.
Syntax: “Move RegA SHL
SFBR”
Shift the SFBR register one
bit to the left and place the
result in the register. Syntax:
“Move SFBR SHL RegA”
010
OR data with register and
place the result in the same
register. Syntax: “Move
RegA | data8 to RegA”
OR data with register and
place the result in the
register. Syntax: “Move
RegA | data8 to SFBR”
OR data with SFBR and
place the result in the
register. Syntax: “Move
SFBR | data8 to RegA”
011
XOR data with register and
place the result in the same
register. Syntax: “Move
RegA XOR data8 to RegA”
XOR data with register and
place the result in the
register. Syntax: “Move
RegA XOR data8 to SFBR”
XOR data with SFBR and
place the result in the
register. Syntax: “Move
SFBR XOR data8 to RegA”
100
AND data with register and
place the result in the same
register. Syntax: “Move
RegA & data8 to RegA”
AND data with register and
place the result in the
register. Syntax: “Move
RegA & data8 to SFBR”
AND data with SFBR and
place the result in the
register. Syntax: “Move
SFBR & data8 to RegA”