Some other tests.... Phi0 looks ok, phi2 look strange not really square, slow rising edge No CS on vic2 / 6526 / roms No ras/cas on drams Not yet tested a new PLA, but my next target is the 6510 itself (r/w stuck to read) One strange things in my tests, with a power cartridge I got the power cartridge screen garbaged but possible to recognize the screen -- Didier -----Message d'origine----- De : email@example.com [mailto:firstname.lastname@example.org] De la part de email@example.com Envoyé : mercredi 29 avril 2015 18:41 À : firstname.lastname@example.org Objet : Re: PLA replacement for C64 On 2015-04-29 17:57, Clockmeister wrote: >>>> I'm also thinking to the ram ship, but I think I would rather have >>>> a garbaged screen with a ram failure >>> >>> Not really. Only in some specific cases you get this kind of result. >>> More RAM failures I had to repair manifested itself with no startup >>> screen than with garbled content. >>> > > Sometimes the temperature of the RAM chip (or lack thereof) is a dead > giveaway especially if the problem is temperature sensitive. I've > diagnosed faulty RAM and ROM by touch alone. That's especially true with the x464 chips. If they run /burning/ hot, they're surely dead (and no startup guaranteed). It's less common with x164 but happens sometimes too. As you mentioned - either way. -- SD! Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2015-04-29 22:00:05
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