[Coco] 512k upgrade for coco3

[Walter Miraglia]

Thank you for replying.  No multipack.  Just a 128k coco3. The warrantee sticker still covering the screw so this is the first time anyone has opened it up.  The only other thing is the cocosdc I have plugged in.   

Thanks again.    Anything else I could try or best to leave  it alone until the replacement memory comes in.  



> On Sep 24, 2015, at 10:22 PM, Barry Nelson <barry.nelson at amobiledevice.com> wrote:
> 
> Before I assume it's a RAM issue, let me just ask…
> Do you have a multi-pak? Were you using it? If so, is it patched for a CoCo 3?
> 
>> On Sep 24, 2015, at 7:11 PM, coco-request at maltedmedia.com wrote:
>> 
>> Date: Thu, 24 Sep 2015 18:24:57 -0400
>> From: Walter Miraglia <walter.miraglia at gmail.com>
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>> Subject: [Coco] 512k upgrade for coco3
>> Message-ID: <B0166E5C-8B8D-4A57-AE7F-04C0B88ACEEE at gmail.com>
>> Content-Type: text/plain;    charset=us-ascii
>> 
>> Hi there.   I am wondering,  if I am upgrading my coco3 with an older dual 30 pin sim based upgrade that uses dynamic ram sims, do I need to remove the two small caps (82 and 27 pf caps on the RAS and CAS lines)?  Or is that only for the 512k static ram upgrades triad one?
>> 
>> I wonder as I am having issues with an old ram upgrade where basic ram tests seem to pass but more involved use of ram, running applications like donkey kong seem to crash.   I did remove those two caps and installed my 512k dram based ram upgrade.  I'm wondering if I should have left them?  Should I solder in a couple and try it again?  ( I would have to order some )
>> 
>> Please advise.  Any help appreciated. 
>> 
>> Sent from my iPad Mini
> 
> 
> -- 
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco