Re: wanted: DOS 1.0 RRIOT and ROM's

From: Ethan Dicks <>
Date: Sun, 21 Oct 2012 23:19:25 -0400
Message-ID: <>
On Sun, Oct 21, 2012 at 6:34 PM, Rob Clarke <> wrote:
> Good morning Gentlemen,
> I was recently given a 2040 in really nice condition. As was the case with
> most that were in use when DOS 2.1 was released, it has had the ROM's and
> RRIOT upgraded. As I already have a pair of 4040's in good working order, I
> wanted to 'downgrade' the 2040 to it's original buggy incarnation. I know I
> could burn a pair of eproms and but the RROIT on an adapter board to bypass
> the ROM but it would be nice to have the original chips. I'm sure there must
> of been hundreds of DOS 1.0 chips lying unused back in the day and I
> wondered if any of them found there way into your parts drawers?

I have a couple of 2040s that were upgraded before I got them, and I
may have the older chips from them in a parts drawer.

> In return I would offer a corresponding set of DOS 2.1 ROMS and RRIOT or
> anything else from my parts drawers that may be of use to people.

If you don't get any offers from someone closer, let me know.  We can
talk off-list about what to swap.


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Received on 2012-10-22 04:00:18

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