Interphase Tech CONDOR 4221 - Manual (Page 108)

Chapter 3 - MACSI Host Interface
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Command Options
Table 3-37. Command Options
Interrupt enable (IE)
As defined in Common IOPB Structures.
Port selector
This field specifies the port for which the statistics will be reported. Valid ports range from 0 to 3.
Return Status
This field will contain any return status from the controller to the host. A value of 0 indicates that no error occurred,
and the command completed successfully.
Host Memory Buffer Address
This field contains the VMEbus address of host memory to which the controller will post the network statistics. Note
the distinct locations for most significant word (MSW) and least significant word (LSW) in this address.
Max Transfer Size
This field contains the maximum number of bytes allocated by the host to accommodate the information to be
transferred by the controller. When the command is complete, this field in the returned IOPB will contain the actual
number of bytes transferred by the controller.
Timer Interval
This field contains an integer which will be used by the controller to set up a fixed interval timer. Each time this timer
expires, the network statistics for the particular port will be posted to the host, along with a returned IOPB, just as if
the host had submitted a separate IOPB. The timer interval will be calculated by multiplying the value provided in this
field by 250 milliseconds.
Submitting a new Report Network Statistics Command for a particular port will cause any existing repeating statistics
command to be replaced with the value in the new command. Using this, a host can cancel a repeating statistics
command by submitting a new command with this field set to 0.
Timer intervals are maintained on a per port basis.
Command Options
Offst 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0x01 Port IE