[Coco] CoCo 2

[L. Curtis Boyle]

Re: Audio Spectrum Analyzer - it will depend which version you have. The original semigraphics version will run but not look right on a Coco 3, but there was a later release (and you can’t tell looking at the cartridge which version you have) that uses PMODE 4 artifact coloring … that *will* work on the Coco 3 just fine.

L. Curtis Boyle
curtisboyle at sasktel.net



> On Jan 5, 2023, at 11:17 PM, Rob Rosenbrock via Coco <coco at maltedmedia.com> wrote:
> 
> Well… I’ve been playing with the emulators, too. Part of why I am interested in playing with a real Coco again for awhile. That, and I just got another copy of the audio spectrum analyzer pack and I’m not sure if it works with the Coco 3.
> 
> I’m not opposed to replacing caps, either. In fact, I’d love to restore an old coco. I’ll pull these caps off and test them in the next few days. I went ahead and ordered some caps just to have them on hand when I do.
> 
> One of the Cocos I watched went from $55 to $118 in the final seconds of the auction. Looks like there’s still some interest in these old machines! But I managed to snag a 26-3127B for just under $100 with shipping from Muskegon. The seller didn’t know much about it, but says it turns on. Looks nice, and it should be 64K already.
> 
>> On Jan 5, 2023, at 10:38 PM, robert.gault--- via Coco <coco at maltedmedia.com> wrote:
>> 
>> You could always try an emulator. VCC does a good job emulating the Coco3 and MAME emulates all Coco versions.Sent from my LG Mobile
> 
>> ------ Original message———
>> From: Rob Rosenbrock via Coco Date: Thu, Jan 5, 2023 9:59 PMTo: CoCoList for Color Computer Enthusiasts;Cc: Rob Rosenbrock;Subject:[Coco] CoCo 2After watching all of those videos on Youtube, I just couldn’t resist the urge to bring my old CoCo down from the attic… I wanted to see if it still worked, or if it needed repair.
>> 
>> The CoCo 3 powers up, but the characters are all fuzzy. According to my oscilloscope, the 5v line is rather noisy. There’s some rather dark goo around the base of a couple transistors in the power supply section. That would either be some glue or those caps have leaked. (or both) All of the keys seem to be working fine. And there’s no sign of yellowing on the keyboard or case.
>> 
>> I would still like to play around again on an old CoCo 2 with 64K. Going rate on eBay seems to be around $100 for a 16K. Typically a 26-3134A. I’m looking for ideas around a 64K upgrade.
>> 
>> Any recommendations?
> 
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