Texas Instruments 990 User Manual page 207

Error Messages
A.I.2 Upper-Level Errors
The upper-level software reports errors in the following format.
Upper-level errors are those errors not inclQded in the other
error reports.
COMM ERROR(UL)
=
EE.GG.CC.DS.SR
where:
EE is the error code. These error codes are
returned to calling tasks when an error occurs.
error codes are as follows:
Error
Code
00
01
02
03
04
05
06
07
08
Meaning
Request complete
Invalid destination 10 (DID )
Queue congestion (temporary condition)
Session already exists for this caller
No session blocks available
No buffers available
Invalid user data message length
Unable to accept write or read calls
Invalid I/O opcode in
caller~s
physical
record block (PRB)
GG is the virtual channel group number.
also
The
CC is the logical channel number. GG and CC indicate the
permanent virtual channel (PVC) affected.
OS is the destination 10 (DID) number.
SR is the request code, where this value has the
following meanings:
Error
Code
00
07
2270526-9701
Meaning
Data message
Fast message
A-3