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Date:      Mon, 8 Nov 1999 23:28:49 +1300
From:      Joe Abley <jabley@patho.gen.nz>
To:        Alfred Perlstein <bright@wintelcom.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   How to enable external serial port on ThinkPad
Message-ID:  <19991108232848.A27521@patho.gen.nz>
In-Reply-To: <Pine.BSF.4.05.9911080102180.12797-100000@fw.wintelcom.net>; from bright@wintelcom.net on Mon, Nov 08, 1999 at 01:03:26AM -0800
References:  <19991108213409.A31181@patho.gen.nz> <Pine.BSF.4.05.9911080102180.12797-100000@fw.wintelcom.net>

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On Mon, Nov 08, 1999 at 01:03:26AM -0800, Alfred Perlstein wrote:
> On Mon, 8 Nov 1999, Joe Abley wrote:
> [can't get external serial port to function]
>
> I was coplaining at the FreeBSDcon about my sio being broken, but
> if you look long enough on IBM's website you'll find MS-DOG
> binaries to toggle on/off the serial port instead of the infrared
> device.

Good pointer. Herewith instructions.

1. Download this:

  ftp://ftp.pc.ibm.com/pub/pccbbs/mobiles/uttpfdos.exe

2. Run that executable on a DOS machine; it will extract a bunch
of programs, which you can copy to a bootable DOS floppy. Boot
your ThinkPad using this floppy.

The important program is "ps.exe". Beware -- it's extremely
ugly. This is what I did to turn on the serial port on my 380/2635;
YMMV. Note the general strategy is to turn off the IR adapter, and
then turn on the serial adapter. My 380 doesn't even have an IR
adapter, but that doesn't seem to matter.

3. Type: ps2 ir disable

I got "Restart the system for changes to take effect". Don't
restart yet, though.

4. Type: ps2 sera enable

You can restart now. For me, everything magically started working.

If this doesn't work for you, and you need to perform additional
ps2.exe shenanigans, "ps2 ?" and "ps2 ? <command>" are your friends.

[ Search Bait: ThinkPad 380 external serial sio IR infra-red ps2 ]


Joe


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