[Coco] Maximum CoCo Drives (was: Re: Posted this pic for retro innovations)

Dave Philipsen dave at davebiz.com
Wed Jan 22 14:40:46 EST 2020

You shouldn’t talk about floppy drives in that way. You’re going to get David Ladd all excited. 

> On Jan 22, 2020, at 12:53 PM, RETRO Innovations <go4retro at go4retro.com> wrote:
> On 1/22/2020 12:41 PM, rietveld rietveld wrote:
>> Let's turn this back into a coco topic
>> is 4 the maximum number of physical drives a coco can have, or has someone ever  patched a DOS  to allow for the use of more drives?
> Others can chime in, but the FDC has 3 drive select lines.  As such, I would assume one could put a 3-8 decoder on those lines, and, with requisite changes to the DOS, use up to 7 drives (leaving 1 selection for "no drive selected").  I think I saw an advertisement in Rainbow for something that did just this.  Of course, even at 3 drives per interface, in an MPI, isn't that 12 drives?
> Jim
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