Ciprico Rimfire 3880, User Manual

Page: 132 / 230

21020285 D User’s Guide
Chapter 7 Board-control Commands
Page 7 - 8 Stop Command List (02H)
Stop Command
List (02H) The Stop Command List command is used to gracefully halt Command List
operations. Upon receipt of this command, the adapter will accept no further
additions to the Command List queue.
After all other existent commands are executed from the Command List, a
Status Block for this command is returned.
The Stop Command List command is useful when you are shutting down your
system. It processes and returns status of commands current at the time of its
issue, therefore you can be sure all data is transferred properly before shutdown.
This command should be issued via a Single Command Structure.
Command
Format
The format of the Stop Command List Parameter Block is shown below:
Description of
Fields
Each of the fields used by the Stop Command List command are explained
in the following section:
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
The Stop Command List command is a Board-control command. To identify
it as such to the RF3880 adapter, this field must contain the value FFH.
Note
An error code of 11H
will be returned in the
Status Block for this
command if you attempt
to stop a Command List
that is stopped (or has not
been started). Command Code
The command code to use to indicate the Stop Command List command is 02H.
Address
Offset
Byte Memory Address
0 1 2 3
00H Command Identifier
04H Reserved Adapter ID = FFH
08H Reserved
0CH Reserved
10H Command = 02H Reserved
14H Reserved
18H Reserved
Table 62: Stop Command List Parameter Block