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Date:	Sat, 11 May 2002 10:53:56 PST7
From:	"J. R. Fox" <jr_fox@pacbell.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: IRQ Wars (2) -- Modem

Content Type: text/plain

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Ben wrote:

> I should have mentioned that I had tried com.sys that comes with eCS,
> com.sys for OS2 that came with the modem, and Sioecs drivers--all with
> similar results. With more empirical fiddling, I somehow caused the
> modem to want IRQ11 instead of IRQ10. The modem works (on com3), sort
> of, that is, it will dial, connect and transmit data, but on attempting
> to hang up, the system locks up requiring a power off or hard reset.

Can't make a good comment here, as I've never much liked internal modems,
and don't use them. With an external modem, I think it just comes down to
the IRQ that your COM port is using anyway, and becomes a non-issue. I've
seen various flakey things going on with modem cards, and on other OSes
too.

> IRQ11 is also used by both SCSI adaptors in the system. Could that be
> the reason for the lock up. When the modem was using IRQ10, which is
> also used by the NIC, using the modem would disable the NIC. What else
> can I try.

I haven't yet resumed full & normal computer operations since the rebuild,
so this observation may not hold up, but, so far, having both SCSI adaptors
showing up on the same IRQ does not _seem_ to have yielded any catastrophic
consequences. (He said, looking nervously over his shoulder.)

From what little I think I know, the options for controlling IRQs come down
to: 1) forced setting in BIOS, 2) alternate card slot, 3) *both* 1 & 2 together,
and possibly (?) some switch on a device driver line, if that is ever applicable
for a given device.

Jordan

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