[Coco] Need help repairing a CoCo 2

[didier derny]

PRINT MEM
 30953

Btw, there is a strange hack, 2 components 1 on top of the other (near the
memory chips)

There is a NOR between a signal and E 

Probably to correct a conception bug

--
Didier


-----Message d'origine-----
De : Coco [mailto:coco-bounces at maltedmedia.com] De la part de Nick Marentes
Envoyé : vendredi 17 octobre 2014 23:49
À : CoCoList for Color Computer Enthusiasts
Objet : Re: [Coco] Need help repairing a CoCo 2

On 18/10/2014 7:42 AM, didier derny wrote:
> Thanks to all,
>
> The problem, came from the ram chips
>
> I replaced them by 2  64kx4 chips and set the jumper to 64k
>
> Now the machines starts and display:
>   
>
> “COLOR BASIC 1.3”
>
> © 1984 TANDY
>
> OK
>
>
> But I don’t see any indication saying that now it has 64k
>
> It’s strange but the chips are replacing the most often are ram chips
>
>   Thanks
>
> --
>
> didier
>
>   

Do a PRINT MEM.  You should get 22824.

But I see you only have Color Basic so the number may be different.

You need to upgrade it to Extended Color Basic. I didn't know Radio Shack
were still selling Color Basic systems by the time the CoCo2 came out.

Nick

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