
Chapter 7 Board-control Commands
Page 7 - 12 |
| Board Statistics (06H) |
Board Statistics (06H)
Command
Format
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 additional board statistics.
The statistics are valid only as long as power is kept to the system. This command reports the statistics by recording them in the area of system memory specified in the command Parameter Block. (This statistics structure 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 occurs when the CLR bit is set.
The Parameter Block format for the Board Statistics command looks like this:
Address |
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| Byte Memory Address |
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Offset | Offset + 0 |
| Offset + 1 |
| Offset + 2 | Offset + 3 |
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00H |
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| Command Identifier |
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04H | Reserved |
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| Addr. Mod. | Adapter ID = FFH | |
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08H |
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| VME Memory Address |
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0CH |
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| Reserved |
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10H | Command = 05H |
| Options |
| Reserved | |
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14H |
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| Reserved |
| |
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18H |
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| Reserved |
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Description of Fields
Table 68: Board Statistics Command Parameter Block
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
Address Modifier
This is the value to be used by the adapter on the Address Modifier lines 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 Options byte is set.
Command Code
The value for this field will always be 06H to indicate a Board Statistics command.
21020285 D | User’s Guide |