Re: Strange 8255 behavior

From: Francesco Messineo <*francesco.messineo_at_gmail.com*> Date: Thu, 14 Jun 2018 16:41:54 +0200 Message-ID: <CAESs-_x_pKCAY5Ds1wAJeRzMh3tjY3VoziH_Hko33CtBEBsU5w@mail.gmail.com> · francesco.messineo_at_gmail.com

Hi Ruud,

On Thu, Jun 14, 2018 at 3:01 PM, Baltissen, GJPAA (Ruud)
<ruud.baltissen@apg.nl> wrote:
> Hallo Francesco,
>
>
>>> http://www.webalice.it/gratteri/65028501.html
>>
>> btw, if Ruud is reading: why gate signal isn't used?
>
> For the simple reason that I had no idea what it did at that time. This guy (sorry, forgot his name in time) said he would build a PCB with the design and find out why/how GATE was needed.

thank you. I do have a C16, but no working 7501 unless it happens to
be from a machine to be fixed. I'd rather not experiment with chips
that aren't mine.

F