[Coco] A year in review at Cloud-9

[CoCoList for Color Computer Enthusiasts]

Generally speaking on CoCo floppy hardware, addresses ghost on some products, are not fully decoded on other products.


On emulation you can ignore these side effects. Real hardware you can't.

I will look at the Tandy floppy interface and see what the actual decode is and try to comply. The caveat would be, you can select it, but on a CoCo with real hardware, you will have issues(if they do in fact exist), which I am sure they do.

I am not really to worried about it. If you want to run at CoCo bandwidth pointed at whatever your target device be. COM port, SD device, etc...

Supported apps will follow otherwise, run at 115.2K baud.

Yes the COM port will transfer data at the same rate, no serial communications slow down. FIFO based parallel transfers. As the first release of firmware will not incorporate DMA transfers. I have looked in to it. As you can imagine, it is a bit complex.


Mark Marlette
http://www.cloud9tech.com
mark at cloud9tech.com


________________________________
 From: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Wednesday, May 7, 2014 12:32 PM
Subject: Re: [Coco] A year in review at Cloud-9
 

On Wed, May 7, 2014 at 12:57 PM, CoCoList for Color Computer
Enthusiasts <coco at maltedmedia.com> wrote:
> Forgot to answer the Becker port question....
>
> Probably not, as from what I recall. The Becker port was in the $FF41 / $FF42 region.
>
> As that works for the CoCoFPGA or in Emulators, etc...On real hardware that is in the floppy area.
>
> Now if I have this wrong, please correct me as I haven't looked it up.

FF41 is right according to docs, however FPGA and the emulators also
have FDC and seem to work fine.  I'm not sure why a real coco would be
any different in terms of conflicts.

In any case, please try to use standards... the last thing we need is
yet another variation on drivers that basically do the same thing :)


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