[Coco] Glenside IDE + Multi-Pak + HDB-DOS

David Ladd davidwladd at gmail.com
Mon Sep 12 10:53:50 EDT 2016


On Mon, Sep 12, 2016 at 9:30 AM, Mark J. Blair <nf6x at nf6x.net> wrote:

>
> ​<cut>
>
>
> If two items using SCS as their chip select were on a Y cable, then both
> would respond to any reads/writes to the $FF40 region. The same goes for
> the CTS select for their ROMs. If I'm not mistaken, a floppy cart responds
> to both SCS and CTS, while the Glenside IDE responds to neither.
>

​Technically the SCS line covers the entire $FF4x and $FF5x range.  That is
why if you use a Y cable with the Glenside IDE or other device that are
configured to use the $FF5x range you have to patch the floppy controller
so it will not respond to the $FF5x range.​



>
> --
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> http://www.nf6x.net/
>
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