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[Terminé] C64 de Pierre : affichage bizarre
Mat Offline
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Posts: 3
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#1
05-07-2018, 01:25 PM
Pierre m'a envoyé sa machine, affichage étrange, mais significatif d'un souci de RAM.

[Image: 40143194780_f2c235b6c6.jpg]20180425_173336 by Dr Vintage, sur Flickr

Précaution : on vérifie l'alim.

[Image: 27081084857_b38fa6059e.jpg]20180425_173331 by Dr Vintage, sur Flickr

Ma cartouche de tests m'indique plusieurs RAM KO.

[Image: 28078987518_d75f74cfe6.jpg]20180425_173524 by Dr Vintage, sur Flickr

[Image: 27081078747_bb03b6f93b.jpg]20180428_125514 by Dr Vintage, sur Flickr

Par acquis de conscience, j'ai changé les multiplexeurs 74LS257A, et 5 mémoires, le tout mis sur socket bien entendu.

[Image: 41050882975_bcdb279a9d.jpg]20180506_084243 by Dr Vintage, sur Flickr

[Image: 41050878625_d9a3131a7e.jpg]20180506_110500 by Dr Vintage, sur Flickr

Ah, eh ben en fait, ça va beaucoup mieux, mission accomplie Smile

[Image: 28078984138_fdbfe65f0c.jpg]20180506_110345 by Dr Vintage, sur Flickr

[Image: 28079082218_743489003d.jpg]20180506_111843 by Dr Vintage, sur Flickr
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