[Coco] POKEs and PEEKs in NitrOS-9?

[Bill Pierce]

Tim, I didn't know the floppy controller acted different from other carts.
If that's the case, a simple util to switch the slot "would" work in OS9.
Or one could write an alt driver that switches the slot, then returns it when done.
 

Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

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-----Original Message-----
From: tim lindner <tlindner at macmess.org>
To: Bill Pierce <ooogalapasooo at aol.com>; CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Mon, Dec 1, 2014 11:54 am
Subject: Re: [Coco] POKEs and PEEKs in NitrOS-9?


On Mon, Dec 1, 2014 at 8:35 AM, Bill Pierce via Coco
<coco at maltedmedia.com> wrote:
>
> Bill, in OS9, the roms for a cart are not used and have no meaning. Therefore 
setting the MPI to a certain slot
> really does nothing as this really just sets the active rom. The buss 
addresses for carts are accessed regardless of
> position of the slot switch.

This isn't correct. The FDC in a floppy controller is addressed by the
SCS* line and the SCS* line is switched by the MPI.

So software is fully in control to select any of the floppy
controllers in the MPI.

-- 
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tim lindner