[Coco] CoCo floppy disk subsystem

[Gene Heskett]

On Friday 15 January 2021 17:04:43 Rick Ulland wrote:

> On 1/15/21 2:07 PM, Gene Heskett wrote:
> > But a decent scope will suffice for the pot adjustments, you'll want
> > to see in the output pattern a 50% duty cycle between logic 0's and
> > logic ones. Very easy to see with a triggered scope. Not very easy
> > on an 80 dollar ebay model.
>
> I thought there was some interplay between the 3 pots that needed
> managing. But I remember many similar procedures...
>
> Just wanted to affirm cheap scope-like objects are dismal timing
> devices for analog anything. The phrase 'snap to grid' comes to mind.
>
> Plus I fix radios. You can pry my tektroniclone from my cold dead
> fingers...unless you've got a better one cheap.
>
> -ricku

I bought myself a birthday present 3 years back Rick, a gigahertz digital 
dual trace sampler. Circa $500 then, some cheaper now. Have not fired up 
my Hitachi v-1065 but 2 or 3 times since. That scope was a tek killer in 
its day. but its day was in the mid 80's. Still works, still in 
calibration, but the tube isn't as brite as it was in 1985.

Cheers, Gene Heskett
-- 
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