Envoy Application Programming Manual
Table Of Contents
- What’s New in This Manual
- About This Manual
- 1 Application Programming With Envoy
- 7 ADM-2 Multipoint Supervisor Protocol
- 8 TINET Multipoint Supervisor Protocol
- 9 Burroughs Point-To-Point Protocol
- 10 Asynchronous Line Supervisor Protocol
- A ASCII Character Set
- B ASCII to EBCDIC Code Conversion
- C File-System Procedures
- D Statistics Messages
- E S-Series Changes to Envoy
- NonStop™ Himalaya S-Series Server Architecture
- G-Series Migration Considerations
- CBSENSEON and CFSENSEON Modifiers
- LEOTRESYN and NOLEOTRESYN Modifiers
- Treatment of Characters After the Termination Character
- Number of SYN Characters
- DTR Drop
- Reporting of Parity Error
- Half-Duplex Support for Asynchronous Lines
- Controller Replacement
- SYSGEN and COUP
- Unit Numbers
- FDX Line Changes
- No Support for Auto-Call Unit
- Glossary
- Index
BISYNC Centralized Multipoint Supervisor Protocol
Envoy Application Programming Manual—427159-001
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Initial READ Operation
Figure 4-6. BISYNC Multipoint Supervisor Initial READ
029CDT .CDD
Send Poll Address
CALL READ...
No
Wait for Response
Timeout?
Retry
Count = 0?
Proper
Protocol?
Continuous
Polling?
Poll Done?
Retry
Count = 0?
Retry
Count = 0?
No
Text
Overrun?
EOT
Received?
Yes
Text With
Error?
List Done?
Text
Received?
No
No
Yes
Error = 171 or 162*
Yes
Yes
No
Yes
No
Error = 173
1
Yes
Send NAK
Delay for Polling
Error = 176
Send NAK
Error = 177
Send NAK
Error = 172
Error = 0
* If text was received with
error in previous poll
Yes
Yes
Yes
No
No
Yes
No
No
No
Yes
No