[Coco] 1mb and 2mb memory upgrades

[Gene Heskett]

On Friday 13 March 2015 09:14:42 Joe Grubbs wrote:
> I meant to ask this the other idea when the topic came up. I believe
> someone said that the 1mb and 2mb upgrades required the use of
> another/second power supply. Is this due to the fact that the CoCo3's
> supply is too weenie to handle it, or were different voltages needed
> for the memory that was being used?

Too weenie.  Seriously too weenie.

> If the former, has anyone considered bolstering the power supply with
> a better transistor, heat sink, and perhaps a stouter transformer. Or
> maybe a newer high current switcher?

I chose the all of the above option 20 years ago, my whole system runs on 
an old xt supply. And it seems to be immortal, unlike the currant crop 
which are carefully designed to fail 2 weeks out of warranty.

Cheers, Gene Heskett
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