Avago Technologies LSI53C896 - Manual (Page 187)

SCSI Registers 4-75
Version 3.3 Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
If the COM bit is cleared, do not access this register using
SCRIPTS operation as nondeterminate operations may
occur. (This includes SCRIPTS Read/Write operations
and conditional transfer control instructions that initialize
the
SCSI First Byte Received (SFBR) register.)
When the COM bit is set, the ID is stored only in the
SCSI Selector ID (SSID) register, protecting the
SCSI First Byte Received (SFBR) from being overwritten
if a selection/reselection occurs during a DMA
register-to-register operation.
Registers: 0x3C–0x3F
Adder Sum Output (ADDER)
Read Only
ADDER Adder Sum Output [31:0]
This register contains the output of the internal adder,
and is used primarily for test purposes. The power-up
value for this register is indeterminate.
31 0
ADDER
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0