Re: Is it at all possible?

From: Francesco Messineo <*francesco.messineo_at_gmail.com*> Date: Tue, 14 Feb 2017 14:36:50 +0100 Message-ID: <CAESs-_xdxSzxr06pkBMKxkveh2QgnHt7KFOQbNcFU9vGY7HV7g@mail.gmail.com> · francesco.messineo_at_gmail.com

On Tue, Feb 14, 2017 at 2:29 PM, Francesco Messineo
<francesco.messineo@gmail.com> wrote:
> On Tue, Feb 14, 2017 at 2:04 PM, Baltissen, GJPAA (Ruud)
> <ruud.baltissen@apg.nl> wrote:
>> Hallo Frank,
>>
>>
>>> What is the 7801 replacement?
>>
>> Jens Schönfeld, Individual Computers, Germany, IIRC.
>
> never heard of, I'll take a look

looks like HC4046 PLL, two divider chips and single gate oscillator
(from the picture, they don't publish a schematic), and they added
onboard xtal to avoid having to adapt the oscllator to the original
xtal on the C64 MB...
So, nothing really difficult or new, it's what anyone would start with
on a typical oscillator + PLL replacement for the 8701.
Frank

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