Re: madison zram (cpmaker)

From: Francesco Messineo <*francesco.messineo_at_gmail.com*> Date: Sat, 3 Jun 2017 21:37:21 +0200 Message-ID: <CAESs-_wyV6Zyk7qOq8P3E9DJzrcuoLYdMZj0cTzOwAmOB2eC-w@mail.gmail.com> · francesco.messineo_at_gmail.com

On Sat, Jun 3, 2017 at 1:57 PM, didier derny <didier@aida.org> wrote:
> Hi,
>
> I was checking the schematics / manual to understand how it worked..
> some chip references are hard to read, (blurred on the schematics)
> any idea if it exist a list of component somewhere
> many can be guessed... more difficult from some others...
>
> for example  U34   any idea ?
> it's used for the mapping...

it's an 82S131 TTL PROM (or equivalent).
If we want to make a replica, someone with an original board needs to
dump this prom content.

Frank IZ8DWF

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