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 Point-To-Point Protocol
Envoy Application Programming Manual—427159-001
3-42
Programming Examples
Programming Examples
The examples in this subsection show the following operations:
•
Line Bid on page 3-42
Bid for line and then transmit message to remote (remote station then reads
message)
•
Limited Conversational Mode on page 3-49
•
Use of Reverse Interrupt (RVI) on page 3-53
•
ID Exchange on page 3-55
Line Bid
The following programming example demonstrates a BISYNC Point-to-Point line bid by
the local station and the corresponding READ by the remote station.
In the example, both the local and remote stations are Compaq systems, and both
stations are executing the example program. The example program has the capability to
both send and receive messages. The program reads from the home terminal at the local
station, then formats and sends the text in a message to the remote station. The process
in the remote station reads the message and writes the text to its home terminal there.
Figure 3-10
shows the flow of communications with a WRITE by the local station and a
READ by the remote station.