Re: PET 3032 alive :)

From: Francesco Messineo <>
Date: Thu, 2 Feb 2017 17:28:15 +0100
Message-ID: <>
On Thu, Feb 2, 2017 at 5:21 PM, Ethan Dicks <> wrote:
> On Thu, Feb 2, 2017 at 9:57 AM, Francesco Messineo
> <> wrote:
>> I do have a few 6821, but I read that the 6520 is equivalent to the
>> 6820. Isn't it?
> I'm not positive on a feature-by-feature, bug-by-bug comparison, but
> as used in the PET, I'm pretty sure the 6821 is a drop-in.  I've done
> it, but I can't promise 100.00% functional compatibility (I can't
> recall if my IEEE-488 tests were completely successful or not, but I
> think I have bad sockets too).  It won't break anything, but it's
> _possible_ there could be something that isn't *exactly* the same.
> Since you have the 6821, I'd pop one in and look for your cursor and
> keyboard to return.

I'm waiting for a suitable IEEE-488 cable for the PET, so for now I'm
not going to test it.
Anyway, based on the fact that the 488 interface is going only into
UC6, I'll leave the 6821 (a 1983 vintage EF6821P) on UC7 position.

Thanks again!

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Received on 2017-02-02 17:02:59

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