Tyan's Tiger MPX motherboard : review - link

[Velocet]

On Wed, Mar 13, 2002 at 04:07:33PM -0500, Bob Drzyzgula's all...
> On Wed, Mar 13, 2002 at 03:09:44PM -0500, Robert G. Brown wrote:
> > 
> > By experimenting (swapping and pulling cards) we determined that the
> > reason it was locking was the video card on a 64/66 slot.  If the video
> > card was in a 64/66 slot it would boot, sort of, but hang at random
> > times.  The network card would lose huge numbers of packets (inferred by
> > the delay and the fact that it eventually delivered corrupted
> > information) until eventually the system hung.  In a 32/33 slot the
> > system booted and installed fine and now is running happily.
> 
> How are the slots keyed on the MSI? On the Tyan, the 64/66 slots are
> keyed for 3.3V operation, while the 32/33 slots are keyed for 5V
> operation. If this is the case on the MSI as well, and you could
> put the video card in either sort of slot, then it probably is supposed
> to support either voltage. But perhaps it doesn't really, so that
> it is flaky and causes hangs when operated at 3.3V?

There's an extra cutout on cards that fit in the 64/66 slots. For eg,
the 4 port DLINK ether cards I tried to put into the tyan 2466 wont go
in the 64/66 slots because the cutout on the card is missing and so the
notch has nowhere to go in the card: card doesnt fit. The intel eepro cards
that also go into this system DO fit in those slots because they do have
the keyed cutout. (The Tekram SCSI cards also wont go in those slots for
eg). I would assume that this keyed cutout is to help differentiate between
cards that can do 3.3v and those that cant.

</wild speculation>

/kc

> 
> --Bob
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-- 
Ken Chase, math at velocet.ca  *  Velocet Communications Inc.  *  Toronto, CANADA