[Coco] Detecting CoCo 1 versus CoCo 2

RETRO Innovations go4retro at go4retro.com
Thu Oct 17 19:17:39 EDT 2024


On 10/17/2024 6:05 PM, Paul F wrote:
> You are absolutely correct Jim - Darren posted a snippet of code a few
> months back on Discord (possibly Hardware-General), outlining exactly
> what you stated. I'm just leaving the office now, but I'll try to dig
> it up when I get home later this evening.
>
> However, I do know that Darren's method isn't 100% accurate in
> detecting a CoCo 1 as it does not work on at least one of my F-board
> CoCo 1 systems. I'm not sure what your particular application/use-case
> might be, but if you're looking for 100% accuracy, I don't believe
> you're going to get it using current known methods.

Initially, I was worried there was enough difference I needed to detect
the system in order to ensure things would work.  But, it sounds like
there is no substantive difference (memory size and ROM version
notwithstanding)

So, at this point, it may be more academic than absolutely needed.  If
nothing else, I think these nuances are intriguing to see/understand.

Jim


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