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- Path: sparky!uunet!comp.vuw.ac.nz!canterbury.ac.nz!chmeds.ac.nz!dave
- From: dave@chmeds.ac.nz
- Newsgroups: vmsnet.internals
- Subject: Tape driver probs.
- Message-ID: <1992Nov12.123203.138@chmeds.ac.nz>
- Date: 12 Nov 92 12:32:03 +1200
- Lines: 25
-
- TAPE DRIVER PROBS
-
- We have a non DEC tape drive on our unibus vax. It used to work well (VMS 4.x)
- but has fallen into disuse.
-
- We wish to start reusing it VMS 5.4
- but it does funny things when being written to.
-
- The unit inits and mounts OK but when a file is copied to the drive it
- reads forward until it falls off the feed spool.
-
- The test programme in I/O users part I pages 6.30-6.33 falls over at
- QIO_W - IO$_CREATE etc at the top of 6.31.
-
- If FIB$M_REWIND is used as appropriate the programme runs until the QIO
- read reverse command. This fails with a SS$_FORMAT (the drive cannot read
- backwards).
-
- Question: Is SS$_FORMAT the correct response for an invalid read command?
- If not, what is?.
-
- Does this questionable response explain the unwinding of the feed spool?
-
- Dave :-(
-
-