Avago Technologies LSI53C896 - Manual (Page 264)

5-36 SCSI SCRIPTS Instruction Set
Version 3.3 Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.
source or destination. In this way, register values are saved to system
memory and later restored, and SCRIPTS can make decisions based on
data values in system memory.
The SCSI First Byte Received (SFBR) is not writable using the CPU, and
therefore not by a Memory Move. However, it can be loaded using
SCRIPTS Read/Write operations. To load the SFBR with a byte stored
in system memory, first move the byte to an intermediate LSI53C896
register (for example, a SCRATCH register), and then to the
SCSI First Byte Received (SFBR) .
The same address alignment restrictions apply to register access
operations as to normal memory-to-memory transfers.
5.6.3 Second Dword
Figure 5.13 Memory Move Instructions – Second Dword
-
DSPS Register [31:0]
These bits contain the source address of the
Memory Move.
If the source address is in the 64-bit address space, the bits
are contained in the
Memory Move Read Selector (MMRS)
register.
31 0
DSPS Register
31 0
MMRS Register