[Coco] J&M/JDOS Manual

[Bruce W. Calkins]

I do have another branded disk controller that uses a chipset that will not 
function over 1 MHz.  I never heard of any such issues with the J&M 
controllers.  However the chipset used in the controller does make a 
difference.

Bruce W.

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----- Original Message ----- 

From: "Mark J. Blair"

> I'm excited that I just received a J&M controller via eBay. I think it's 
> the classic JFD-COCO, and the same model that I had on my first computer 
> back in the early to mid 1980s. It's a bit banged up, but I opened it up 
> to clean the contacts and dust it out, and gave it a very cursory test on 
> my CoCo 3 plugged into an MPI. It seems to work, though I've read about 
> compatibility problems with some (?) J&M controllers in the CoCo3, so I'll 
> keep my eyes open for trouble.
>

> -- 
> Mark J. Blair, NF6X