[Coco] Good news: my CoCo 3 is back to life!

Mark Marlette mark at cloud9tech.com
Mon Mar 5 12:03:43 EST 2007


That HD mod is not a simple mod. Like making a new controller! :)

Quoting Mike Pepe <lamune at doki-doki.net>:

> Joel Ewy wrote:
>
>> FWIW, I have a 26-3029, a 26-3129, a J&M (says JFD-COCO rev.A on the
>> PCB), a Disto Super Controller, and a couple Super Controller IIs.  They
>> all work on the CoCo 3 without an MPI.  (And none of them are an FD-501
>> :) )  My 3029 has an MB8877 FDC with a WD9216 data separator.  The
>> controller in the J&M is an SY6591.  All the rest use the 28-pin   
>> WD1773. Mike Pepe notes in an email on this list on 8/2/06 that the  
>>  original
>> controller (the one that required 12V on the bus) was the 26-3022.  So
>> that should be the only one you would need to plug into the MPI to use
>> with the CoCo 3.
>
> Let me verify that as true, the 3022 is the only RS disk controller
> that needs +12V to operate.
>
>> This fall Mike Pepe modified his  3029 for high-density and posted a few
>> messages about it on this list.  Last I recall he still needed to
>> finalize the software/firmware modifications.  His notes are here:   
>> http://www.doki-doki.net/~lamune/computers/coco/hd-floppy/
>
> Yes, the 3029 Hi-density mod does work. Hopefully once my stuff gets
> out of storage and back into a house I can keep going on that little
> project!
>
> -Mike
>
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