[Coco] Detecting CoCo 1 versus CoCo 2

[David Ladd]

On Thu, Oct 17, 2024 at 6:16 AM Frank Swygert via Coco <coco at maltedmedia.com>
wrote:

> Date: Wed, 16 Oct 2024 23:43:37 -0500
>  From: RETRO Innovations <go4retro at go4retro.com>
>
> So, when I boot a CoCoSDC and it says "CC2" in my CC2, it's because the
> CC2 has the extended BASIC ROM?
>

Frank, if you look at the message Tim posted you will see it is possible to
detect the CoCo 1 via software using the way the hardware works as far as
the audio MUX chip in the CoCo 1:

From: tim lindner via Coco <coco at maltedmedia.com>
Date: Wed, Oct 16, 2024 at 10:39 PM
Subject: Re: [Coco] Detecting CoCo 1 versus CoCo 2
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Cc: tim lindner <tlindner at macmess.org>


><cut>

>From Darren Atkison:
The audio MUX on the CoCo 1 is bi-directional, but the integrated
DAC/MUX on the CoCo 2 is uni-directional. There is a test you can do
where you toggle the single-bit sound output and check to see if the
cassette input level changes to match. If it does change then it's a
CoCo 1.

-- 
tim lindner



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