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 Multipoint Tributary Protocol
Envoy Application Programming Manual—427159-001
5-4
Station Addresses
Figure 5-1. BISYNC Multipoint Tributary Polling
035CDT .CDD
Something
to send ?
No
No
Yes
Nowait
All Stations’
Poll/Select States
set to Inactive
CALL OPEN...
CALL DEFINELIST...
CALL READ...
Concurrent
Processing
Done?
Monitor
Communication Line
CALL CHANGELIST...
Station is Polled
READ Completes
CALL WRITE...
Stations’ Poll State
set to Active
(Something to send)
Stations’ Poll State
set to Inactive
Error = 166 (Address
has been polled).
Return entry number
in field of message
control word
Reply is expected
from Supervisor so
Stations’ Select
State set to Active
(willing to receive)
Send data to
supervisor. All
messages but last
are formatted with
trailing ETB
character. Last
message is formatted
with trailing EXT
character
2
CALL CHANGELIST...
CALL CHANGELIST...
1
Yes