
Chapter 7 Board-control Commands
SCSI Hard Reset (10H) | Page 7 - 31 |
SCSI Hard
Reset (10H)
Command
Format
The SCSI Hard Reset command simply asserts the reset (RST) signal on the SCSI bus. It will abort all commands being executed, even those being executed by devices that are currently disconnected. For this reason, it should only be used as a drastic means of recovery.
The Parameter Block for the SCSI Hard Reset command has this format:
Address |
| Byte Memory Address |
|
| ||
Offset | Offset + 0 | Offset + 1 |
| Offset + 2 |
| Offset + 3 |
|
|
| ||||
|
|
|
|
|
| |
00H |
| Command Identifier |
|
| ||
|
|
|
|
|
|
|
04H |
| Reserved |
|
|
| Adapter ID = FFH |
|
|
|
|
|
| |
08H |
|
| Reserved |
|
| |
|
|
|
|
|
| |
0CH |
|
| Reserved |
|
| |
10H | Command = 10H | Reserved |
|
| Reserved | |
|
|
|
|
|
|
|
14H |
|
| Reserved |
|
| |
|
|
|
|
|
| |
18H |
|
| Reserved |
|
| |
|
|
|
|
|
|
|
Description of Fields
Table 88: SCSI Hard Reset Parameter Block
Each field of the SCSI Hard Reset Parameter Block is described below:
Command Identifier
The Command Identifier field is used to identify the Status Block associated with a Parameter Block. It must be a unique value.
Adapter ID
This field identifies the type of command being issued. This is a
Command Code
The command code for this
User’s Guide | 21020285 D |