Filter
Top Products
21020285 D User’s Guide
Chapter 7 Board-control Commands
Page 7 - 30 Abort (0DH)
Abort (0DH)
This command is used to halt a specific command. It attempts to find a
command with the Command Identifier specified, and abort it. If the Abort
command is successful, the Abort error code (3BH) will be returned in the
Status Block of the command being aborted, and the Abort command will be
completed without error. If the command with the specified Command
Identifier cannot be found, the Abort command will return a Status Block with
the Abort Failed error code (3CH).
Command
Format
The Parameter Block format for the Abort command looks like this:
Note
This command must be
used to abort pending
Target Mode Response
commands when an
ABORT, ABORT TAG,
CLEAR QUEUE, or
BUS DEVICE RESET
message is received
from an initiator.
Description of
Fields
Each of the fields used by the Abort command are explained in the following
section:
Command Identifier
The Command Identifier is used to identify the Status Block associated with a
Parameter Block. It must be a unique value.
Adapter ID
This field must contain an FFH to indicate that it is an adapter command.
Command Identifier of CMD to be Aborted
This field contains the Command Identifier of a command that should be
aborted. The adapter will search for the first command that has this Command
Identifier and will abort it.
Command Code
This field indicates the command to be executed. For the Abort command it is
0DH.
Address
Offset
Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
00H Command Identifier
04H Reserved Adapter ID = FFH
08H Command Identifier of CMD to be Aborted
0CH Reserved
10H Command = 0DH Reserved
14H Reserved
18H Reserved
Table 87: Abort Parameter Block