2000-OSM, F1 8-71
General Statistics
Address: This station’s wire address.
Mode: Indicates the Software State of this station. These conditions are additive, bits encoded as
follows:
1. Receive Request Pending - A UDP packet has been received and needs processing.
2. Receive Buffer Needed - The receiver buffer pool is full. When one is available, re-enable the
receiver.
4. Transmit Requested - A UDP packet is in dual port memory and needs to be transmitted.
8. Transmit Completed - The last UDP transmission was successful, notify host.
16. Transmit in Error - The last UDP transmission was in error, notify host.
32. Upload Completed - The last DMA transfer to the host is completed, notify host a UDP packet
has been received.
64. Initialization Requested - The host has requested the board reinitialize itself.
128. Line Timer Expired - The current transmission is taking too long, go into override mode. The
communications board will attempt to clear line condition. (Caused by incorrect line biasing.)
256. Send Token - A token is ready to be sent to the next station in the token algorithm.
512. Terminal Input Pending - Carriage return pressed by debug operator, Process command.
1024. Debug Mode - Update screen each pass through processing loop.
2048. End of Interrupt - Send end of interrupt to host interrupt process.
4096. Initialization Completed - Send initialization complete message to host.
Input: Address of next buffer to fill in receive buffer pool.
Output: Address of next buffer to empty into dual ported RAM.
Max Slack: Maximum difference between input and output, or host efficiency (lag).
Gap Device: Location of next device in gap search algorithm.
Token Dest: Location of next non-gap update token.
Next Alive: Address of next station detected on the line.
Next Recvd: Address of the source address of the token seen on the wire subsequent to this station
sending a token.
Rate: Number of total detected errors per billion opportunities to generate errors.
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