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	Thu, 26 Jun 1997 08:24:03 GMT
Date: Thu, 26 Jun 1997 08:24:03 +0000 (GMT)
From: BRiGHTMN <brightmn@a-v25.rh.sunyit.edu>
To: Drew Derbyshire <ahd@kew.com>
cc: hackers@FreeBSD.ORG
Subject: Re: access to SIO port freezes FreeBSD 2.2.1
In-Reply-To: <199707132321.TAA01158@pandora.hh.kew.com>
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a) conflicts with network cards or soundcard would be my guess, (IRQ)
b) remove the modems and make SURE that on board serials are disabled
c) maybe the modems are conflicting with some device's port address?

good luck
Alfred
perlsta@sunyit.edu

> Here's a wacky one ...
> 
> I have two systems both running FreeBSD 2.2.1 with four serial ports
> enabled.  
> 
> 	athena is a 386/33 with 16M, ISA bus, two dumb serial ports,
> 	two internal modems with FIFO UARTS.  Modems are COM3/COM4,
> 	IRQ 5 and 9; one is IBM/Reveal v.32, other is Zoom v.34
> 
> 	pandora is a 386/66 with VLB for the display, but mostly ISA
> 	with two dumb serial ports and two 16650x uarts.  FIFO UARTs are
> 	COM3/COM4, IRQ 9 and 5.
> 
> Due to a "little" accident with athena (why in hell I give myself
> root password, I don't know, but it's another story anyway), I
> needed to put the modems into pandora.  So I disable the internal
> dumb ports, move the FIFO UART's to COM1/COM2, and put the modems
> in at COM3/COM4, IRQ 5 and regen the kernel, and system comes up
> fine.
> 
> Then I enable ttyd2 and ttyd3, and HUP init, and it hangs.  Solid.
> Can't even get console to switch screens or reboot.  Works out that
> ttyd3 works, but not ttyd2 (v.32).  Windows 95 sees it, FreeBSD
> sees it, but locks solid when opening.  Same two modems worked
> great 24 hours before on pandora's little sister.
> 
> Suggestions as to where to look?