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
3-16
File-System Errors
File-System Errors
Upon completion of a file-system request, the application process should check for the
Guardian 90 file-system error codes listed in Table 3-8.
Error codes in the ranges shown in Table 3-9
are also possible.
Table 3-8. File-System Errors for BISYNC Point-to-Point
Error Code Description
0 Operation successful
140 Modem error (communication link not yet established, modem failure,
momentary loss of carrier, or disconnect)
160 Request is invalid for device state; protocol error
161 Impossible event occurred for line state
162 Operation timed out
163 EOT received
164 Disconnect received
165 RVI received
166 ENQ received
167 EOT received on line bid
168 NAK received on line bid
169 WACK received on line bid
170 No ID sequence received during circuit assurance mode
171 No response or invalid response received
172 Reply not proper for protocol
173 Maximum allowable NAKs received
175 Incorrect ACK received
177 Text overrun (insufficient buffer space for data transfer)
Table 3-9. General File-System Errors
Error Code Description
10-29 Coding or access problem
30-33 System configuration problem
120-199 Device hardware problem
200-255 Path error