Date: Thu, 21 Sep 2000 23:25:40 +0100 From: Mark Ovens <marko@freebsd.org> To: Antoine Beaupre <beaupran@IRO.UMontreal.CA> Cc: freebsd-questions@freebsd.org Subject: Re: PnP modem not recognized at boot, but by pnpinfo(8) Message-ID: <20000921232540.A257@parish> In-Reply-To: <Pine.LNX.4.21.0009202150110.12634-100000@phobos.IRO.UMontreal.CA>; from beaupran@IRO.UMontreal.CA on Wed, Sep 20, 2000 at 10:19:49PM -0400 References: <20000921013138.G1612@parish> <Pine.LNX.4.21.0009202150110.12634-100000@phobos.IRO.UMontreal.CA>
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On Wed, Sep 20, 2000 at 10:19:49PM -0400, Antoine Beaupre wrote:
> Here we go again.
>
> Yep. Award 4.51PG BIOS.
>
Close enough, mines a 4.51PGM ('M' for modem maybe :))
>
> Anyways, I have some odd results regarding this. I tried to recompile with
> sio1 on irq 9, obviouslyy not a good idea since my SCSI adapter is on irq
> 9... So I tried to move it back to irq5, but surprise! after a whole new
> "config SHALL && cd ../../compile/SHALL && make depend && make && make
> install" cycle with the sio1's irq tweaked to 5, at boot, it still gets
> listed ('ls' in userconfig (-c)) as irq 9!!!
>
I'd recommend using ``config -r'' when you've changed things. It removes
the compile directory and re-creates it which guarantees that everything is
correct (some files are created by the build process containing specific
data from the config file - these don't get updated just because something
is changed or deleted from the config, only if something is added).
[snip]
> > Aha! a classic case of IRQ conflicts.
>
> Or so I've been told. But with what? The sio1? It seems so. But then, the
> kernel should switch the modem to another irq! I can't move it away from
> irq3, whatever I try! (get ready for the classical "Windoze can do
> it!?") On windos, it's on irq 10 and port 0x3e8 - 0x3fe. Shouldn't the
> fbsd kernel be able to do the same acrobatics?
>
I must have missed that in an earlier post, I'd been assuming that Win was
using IRQ3.
OK, maybe this won't directly solve your problem but it may give you some
ideas to try, I reboot my PC into all 3 OS's and looked for the modem
settings:
FreeBSD - IRQ5 0x3e8 sio2 (COM3 in DOS)
Win 95 - IRQ5 0x3e8 COM3
Win NT4 - IRQ5 0x2e8 COM4
(note the different address in NT)
My BIOS is setup thus:
PnP OS: N
Resources controlled by: Manual
Reset configuration Data: Disabled
IRQ-3 Legacy ISA
IRQ-4 Legacy ISA
IRQ-5 PCI/ISA PnP
IRQ-7 Legacy ISA
IRQ-9 PCI/ISA PnP
IRQ-10 PCI/ISA PnP
IRQ-11 PCI/ISA PnP
IRQ-12 Legacy ISA
IRQ-14 PCI/ISA PnP
IRQ-15 PCI/ISA PnP
OK, I've done some tests on my system. Normally this is what I get:
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A
....
sio2: <Pace 56 Voice Internal Plug & Play Modem> at port 0x3e8-0x3ef irq 5 on isa0
sio2: type 16550A
I disabled sio1 (COM2) in the BIOS and got:
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
.....
sio2: <Pace 56 Voice Internal Plug & Play Modem> at port 0x2f8-0x2ff irq 3 on isa0
sio2: type 16550A
I got the same error about sio1 that you did but notice that my modem,
although it is still found at sio2, now has the IRQ and address that sio1
usually has (IRQ3 0x2f8).
Next, I did ``boot -c'' and disabled sio1, this time I got:
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
....
sio2: <Pace 56 Voice Internal Plug & Play Modem> at port 0x2f8-0x2ff irq 3 on isa0
sio2: type 16550A
No warning about sio1, the modem still found as sio2, and still with IRQ3
0x2f8 (sio1's usual settings).
So, why don't you try, disabling sio1 (COM2) in the BIOS, doing ``boot
-c'', disabling sio1, and see what happens to your modem.
--
4.4 - The number of the Beastie
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