Dma command (dcmd), Dma next address (dnad), Register: 0x27 – Avago Technologies LSI53C1000R User Manual
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Registers
Version 2.2
Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
Register: 0x27
DMA Command (DCMD)
Read/Write
DCMD
DMA Command
[7:0]
This 8-bit register determines the instruction for the
LSI53C1000R to execute. This register has a different
format for each instruction. For a complete description
refer to
Chapter 5, “SCSI SCRIPTS Instruction Set.”
Registers: 0x28–0x2B
DMA Next Address (DNAD)
Read/Write
DNAD
DMA Next Address
[31:0]
This 32-bit register contains the general purpose address
pointer. At the start of some SCRIPTS operations, its value
is copied from the
DMA SCRIPTS Pointer Save (DSPS)
register. Its value may not be valid except in certain abort
conditions. The default value of this register is zero.
7
0
DCMD
0
0
0
0
0
0
0
0
31
0
DNAD
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