QNX 6.2 Momentics Pro crash with memory upgrade

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Richard Bonomo,6289 Chamb

QNX 6.2 Momentics Pro crash with memory upgrade

Post by Richard Bonomo,6289 Chamb » Tue Dec 10, 2002 11:27 pm

We recently upgraded the memory on a PC-104 board from 16 MB to 32 MB.
If we leave the BIOS settings at 16 MB, the system boots up as usual (of
course the new memory is not available either -- or is it?).

If we adjust the BIOS settings to take into account the new memory,
then upon a cold restart (power up) the system hangs after
displaying the "starting QNX" message.

On a warm reset, the system gets to that point, then spits out a dump,
which goes as follows:

Version: 4.25J Sep 09 1999 Technical Support: +1 (613) 591-0941
Proc fault 1, ldt 100 /boot/sys/Proc32; fault 0+0
cs:eip=5:5493 ss:esp=d:f7c0fd0 efl=2246 ds=d fs=0 gs=0
eax/4 ebx/f7c0fd0 ecx/37fa edx/0 esi/5965 edi/0 ebp/f7c0fe0
Stack (d:f7c0fd0)
<stack dump>
Process entry (addr 6050)
<process table dump?>

Can anyone tell me if this gives any real hint as to why this system
crashes with more memory aboard?

Is there some simple way of bypassing the BIOS setings, so
that a memory diagnostic can be run on the upper 16 MB of memory,
even if the BIOS is set to 16 (not 32) ?

Any other potentially helpful comments?

Richard B.

Guest

Re: QNX 6.2 Momentics Pro crash with memory upgrade

Post by Guest » Thu Dec 12, 2002 2:15 am

bonomo@sal.wisc.edu sed in <at5soc$n5f$1@inn.qnx.com>:
We recently upgraded the memory on a PC-104 board from 16 MB to 32 MB.

If we adjust the BIOS settings to take into account the new memory,
then upon a cold restart (power up) the system hangs after
It could be flaky memory module.

Suggestion: swap those two (four for SIMMs?) memory modules in the slot
and see if anything change.
--
kabe

Richard Bonomo,6289 Chamb

Re: QNX 6.2 Momentics Pro crash with memory upgrade

Post by Richard Bonomo,6289 Chamb » Thu Dec 12, 2002 10:30 pm

kabe@sra-tohoku.co.jp wrote:
bonomo@sal.wisc.edu sed in <at5soc$n5f$1@inn.qnx.com>:

We recently upgraded the memory on a PC-104 board from 16 MB to 32 MB.

If we adjust the BIOS settings to take into account the new memory,
then upon a cold restart (power up) the system hangs after

It could be flaky memory module.

Suggestion: swap those two (four for SIMMs?) memory modules in the slot
and see if anything change.
It turns out that we mixed Fastpage and EDO DRAM. While this
combination actually passes the memory test diagnostic utility
I tried (a DOS program called docmemory), it is probably not
usable in actual operation, at least not reliably.

Rich B.

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