21020285 D User’s Guide
Chapter 7 Board-control Commands
Page 7 - 12 Board Statistics (06H)
Board Statistics (06H)The RF3880 adapter keeps track of several types of board statistics. This
particular command maintains compatibility with earlier RF35XX products; it
is used to report three types of statistics. The Extended Board Statistics
command, described in a following section, reports addit iona l boa rd stati stic s.
The statistics are valid only as long as power is kept to the system. This
command reports the statistics by recor ding them in the area of system memory
specified in the command Parameter Block. (This s tatistics s tructure is returned
in addition to the normal Status Block.)
You can clear the internal statistics table at any time by issuing the command
with the CLR bit of the Options field set. No data transfer occur s when the CLR
bit is set.
Command
Format
The Parameter Block format for the Board Statistics command looks like this:
Description of
Fields
Each of the fields of the Parameter Block are explained 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
The Board Statistics command is a Board-control command. This field must
be set to FFH.
Address Modifier
This is the value to be used by the adapter on the Address Modifi er l ines when
writing statistics to memory. This field is not used when the CLR bit is set.
VME Memory Address
This is the system memory address at which you wish to have the adapter place
the board statistics. This field is not used when the CLR bit of the Opti ons byte
is set.
Command Code
The value for this field will always be 06H to indicate a Board Statistics
command.
Address
Offset Byte Memory Address
Offset + 0 Offset + 1 Offset + 2 Offset + 3
00H Command Identifier
04H Reserved Addr. Mod. Adapter ID = FFH
08H VME Memory Address
0CH Reserved
10H Command = 05H Options Reserved
14H Reserved
18H Reserved
Table 68: Board Statistics Command Parameter Block