RE: PLA replacement for C64

Bingo! It works! Just replaced the PLA!

I was sure the guy who sold me the "broken" board had not really done any
effort to repair it

He is just a scavenger, collecting chips on a socket :)

I think I paid 2 or 3 euros :)  as this board only have 2 sockets it was
almost complete
The 6581 was gone, and the PLA broken

Thanks to all for your advices

--
didier



-----Message d'origine-----
De : owner-cbm-hackers@musoftware.de
[mailto:owner-cbm-hackers@musoftware.de] De la part de silverdr@wfmh.org.pl
Envoyé : jeudi 30 avril 2015 16:27
À : cbm-hackers@musoftware.de
Objet : Re: PLA replacement for C64



On 2015-04-30 07:21, Baltissen, GJPAA (Ruud) wrote:
> Hallo Didier,
>
>
>> One strange things in my tests, with a power cartridge I got the 
>> power cartridge screen garbaged but possible to recognize the screen
>
> This might hint to a broken ROM or a PLA not addressing the ROM 
> correctly. I must admit that I haven't any idea at all what the 6510 
> does when it runs into a KILL opcode but what you described in a 
> previous email looks like that. The above confirms IMHO that it is NOT 
> the 6510 causing your troubles

Right, if the screen is to be recognised means that the CPU has done at
least part of its job.
--
SD!

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