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
ADM-2 Multipoint Supervisor Protocol
Envoy Application Programming Manual—427159-001
7-47
WRITEREAD (Send Function and Read Message)
Example 7-25 shows the line-control sequences that take place when a function key is
pressed on terminal 1, the terminal is polled, and a send function of "send page
foreground" is issued to the terminal.
Example 7-25. Send Function and Read Message
Application Process Terminal 1
CALL READ(...)
|
| EOT 11p ENQ ->
| <-- SOH @ ETX
(READ completes)
error = 0
line state = READ
MCW.<8:15> = 0
MCW.<6> = 1 (message type = special)
CALL WRITEREAD (...)
| ACK ->
| <-- EOT
| EOT 11w ENQ ->
| <-- STX-text-ETX
(WRITEREAD completes)
error = 0
line state = READ