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

[Allen Huffman]

Heh, we talked about this very thing at an Atlanta CoCoFEST back in the early 90s.

There was a program in Rainbow called SIXDRIVE that did this with six single sided drives of the say, but I never saw someone using the selects to use them as bits.

We should do this and show it off a fest.

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> On Jan 22, 2020, at 12:52 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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