Panic: Lock Loop On Inserting Disk2.vd.

Panic: Lock Loop On Inserting Disk2.vd.

[ralphc]

I'm installing the four disk set on a HP Vectra QS/165 8MB IDE
machine.  Running a:b goes fine and installs on the DOS partition.  I
then run plan9\b and select the hardware.  I've lied a bit because it
has a DEC network card that I don't intend to use so I said `none'.  It
recognises the 150MB of free space at the end of the disc and prepares
it.

Then it asks for the second disk and press any key.  I insert a disk
with disk2.vd on it and press return.  The floppy is accessed briefly
then the drive light goes out and nothing happens.  Leaving it for 20
seconds or so results in:

panic: lock loop 0x0 key 0x989680 pc 0x8010efea held by pc 0xffffffff

80113d4f 8010d306 801126df 80100001
80107058 8010da06 8010d8f5 80107155
80105315 8010029a 80100245 8010001b
80106fb8 80107026 8010efea 8010efea
8010efea 8010f9f8 80112d1f 80104483
801126ca 80102dbc 80100245 80100245
exiting

"It means nothing to me." -- Midge Ure.

Any suggestions would be greatly appreciated.  Should I take out the
unneeded Ethernet card?


Ralph.

------------------------------------------------------------------------
Ralph Corderoy.  ralphc@sps.siemens.co.uk.  Phone: UK 01202-408769.    
    Siemens Plessey Systems, Grange Road, Christchurch, Dorset. BH23 4JE

Panic: Lock Loop On Inserting Disk2.vd.

[ralphc]

jmk wrote:
> Well, I looked and I can't see any way to get there from here, can't happen...
> No consolation, I know.

Thanks for the effort.

> I'm not familiar with the HP Vectra, what processor is it and what is the type
> of the DEC ethernet card, is it a DMA card?

A very plain 386.

> It looks like someone overwrote some memory used for a lock. I can only
> suggest the usual things, BIOS defaults, turn off any shadowing, etc.

Yes, that was it.  After hunting around for a few days I managed to get
some documentation on the motherboard.  Flip a switch to turn off its
`optional ROMs' which a service report said stopped SCO Xenix 386 and
AutoCad 386 from running and it read the second installation disk fine.

forsyth@plan9.cs.york.ac.uk wrote:
> i don't suppose there is a document on the net somewhere about these
> settings, written by someone who knows?

I found two things that might be useful to others.  The first is the
comp.sys.ibm.pc.hardware.*_Frequently_Asked_Questions that had an awful
lot of information in, just nothing that particularly happened to cover
my case.  And the second was a set of utilities for mucking around with
CMOS settings and the like;  a pointer to the FTP site is in the FAQ:

    Some 286 machines don't have a CMOS configuration menu in the BIOS.
    They require a software CMOS setup program.  If you don't have the
    Installation and/or Diagnostics diskette for your machine, you can
    try using a shareware/freeware program.  Try looking in:

        oak.oakland.edu:/SimTel/msdos/at
    or
        ftp.uu.net:/systems/msdos/simtel/at

I got these utilities but didn't have to use them in the end because
proper documentation turned up, but they might help someone else in the
same boat.

Many thanks to all who gave help.  My next problem is adding the HP
VGA Board (D1180A) to the vgadb.  It has a Paradise controller on it.
640x480x1 works fine, 640x480x8 results in the display wrapping into
about six parts on the screen with a big black box in the middle.  (If
anyone has already done this can they get it touch.)  Is there a way to
leave the message telling me that the VGA card isn't in the database on
the screen.  Alternatively, is there a way of regenerating the message
once booted?


Ralph.

------------------------------------------------------------------------
Ralph Corderoy.  ralphc@sps.siemens.co.uk.  Phone: UK 01202-408769.    
    Siemens Plessey Systems, Grange Road, Christchurch, Dorset. BH23 4JE

Panic: Lock Loop On Inserting Disk2.vd.

[forsyth]

i've seen this on two machines that had incorrect BIOS advanced/chipset
parameters (including the one i'm using now).  the BIOS default parameters
were definitely wrong for my configuration -- they worked, but
assumed rather slow memory -- but my first attempts were too optimistic

the system got all the way through termrc but blew up with a lock loop
when starting all my windows in 8½.  i suspect that the lock word flushed
from the cache didn't make it to memory because the memory write time allowance
was too low.  i added another wait state and it has been fine since.
the little handbooks that come with
the motherboard rarely give enough information to allow you to work out the
correct values to use.
the m/b i'm using now comes with better documentation than most, but
it still wasn't enough.
proper computers are designed to support a particular combination of things,
with fairly tight limits; the average PC motherboard and chipset must accept
almost anything, hence all the options.

i don't suppose there is a document on the net somewhere about these
settings, written by someone who knows?

Panic: Lock Loop On Inserting Disk2.vd.

[jmk]

Well, I looked and I can't see any way to get there from here, can't happen...
No consolation, I know.

I'm not familiar with the HP Vectra, what processor is it and what is the type
of the DEC ethernet card, is it a DMA card?

It looks like someone overwrote some memory used for a lock. I can only suggest
the usual things, BIOS defaults, turn off any shadowing, etc.
If it's a DMA ethernet card, pull it.

--jim