beautypg.com

Table 5.1 read/write instructions, Read/write instructions, Table 5.1 – Avago Technologies LSI53C1010R User Manual

Page 275

background image

Read/Write Instructions

5-27

Version 2.2

Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.

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

1

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

SCSI First

Byte Received (SFBR)

register. Syntax: “Move
data8 to SFBR”

Move data into register.
Syntax: “Move data8 to
RegA”

001

2

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

SCSI First Byte Received

(SFBR)

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

SCSI

First Byte Received (SFBR)

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

SCSI

First Byte Received (SFBR)

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

SCSI

First Byte Received (SFBR)

register. Syntax: “Move
RegA & data8 to SFBR”

AND data with SFBR and
place the result in the
register. Syntax: “Move
SFBR & data8 to RegA”