RX02 floppy trouble(s)

[Brad Lowman]

I am having troubles with my RX02 floppies that I am asking for advice on.
Until recently, I have never tried to use them (who would??? :-) ), but it
would appear to be a device driver problem.  I am using 4.2 on a VAX 750.

If I format a floppy in either drive, I can not format another in THAT drive
(rx0 or rx1) until I have rebooted.  rxformat reports "Mount device busy".
Powering down and up the drive does no good.

If I try to mount a floppy (that has had a file system made on it via
mkfs), it usually works, but will occassionly (20%) crash the VAX with a
protection fault.  Other times it will generate a stray interrupt on the
uba that locks out the last DZ board on the UNIBUS (dz7), regardless of
whether the command was issued from a terminal on the DZ board or not.
The latter also occurs when I (try to) use tar on the RX02.

All boards in the VAX are at "standard" addresses and vectors.  I seen the
buglist compiled by Mt. Xinu, but no bugs in vaxuba/rx.c are reported.  Has
anyone ever had this problem or know any part of the solution?  Please send
responses by mail.  Thanks in advance.

--brad   ARPA:  uclachem!bhl at locus.ucla.edu
	 UUCP:  ...{ucbvax, inhp4}!ucla-cs!uclachem!bhl