Re: 2001 repair help

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Thu, 28 Dec 2017 12:09:43 +0100
Message-ID: <CAESs-_yoBvXRacsCheVA5vtHG5=RbAEQLPO+cn+2saktnQZ_tw@mail.gmail.com>
On Thu, Dec 28, 2017 at 11:09 AM, Gerrit Heitsch
<gerrit@laosinh.s.bawue.de> wrote:
> On 12/28/2017 10:53 AM, Francesco Messineo wrote:
>>
>> On Thu, Dec 28, 2017 at 10:31 AM, Gerrit Heitsch
>> <gerrit@laosinh.s.bawue.de> wrote:
>>>
>>> On 12/28/2017 09:00 AM, vossi wrote:
>>>>
>>>>
>>>> The 6540 need a clock. It doesn't wok with a0 or static input.
>>>
>>>
>>>
>>> It should work with A0 from the programmer connected to the clock input
>>> and
>>> A0 from the ROM connected to A1 from the programmer. A1 to A2 and so
>>> forth.
>>
>>
>> That's what I think too. I'll discover it in a few days anyway :)
>
>
> If it doesn't, try inverting A0 before feeding it into the clock input.

hm? Why should it matter, other than for adding a delay?

Frank

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Received on 2017-12-28 12:00:02

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