[Coco] CoCo SDC weirdness; i.e. finding the FDC slot

Tim Fadden t.fadden at cox.net
Sat Mar 4 12:59:16 EST 2017

On 3/4/2017 9:30 AM, Darren A wrote:
> On Sat, Mar 4, 2017 at 7:19 AM, Robert Gault wrote:
>>    It seems to me that the CoCo SDC software should look for the FDC and
>> swap slots as needed.
> That is what SDC-DOS does.
> The SDC driver for NitrOS9 locates the SDC and FDC during the Init
> routine.  Before exiting the Init routine it selects the FDC slot (if
> found).  When called to perform I/O, the driver selects the SDC slot, but
> saves and restores the original slot selection at entry and exit.
> - Darren
Well, most of the time any way.  :-)
Nitros9 drivers, and utilities do not always work nice.  One bug/feature 
I have found, but have a work-around for it.

Tim Fadden
"Hey Schmidt, don't forget about the six P's.
Proper Preparation Prevents Piss-Poor Performance!"

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