[Coco] MAME FDC Issue that can cause corruption

Ron Klein ron at kdomain.org
Tue Aug 1 06:28:28 EDT 2017


I'll be submitting this to the mametesters site as soon as have all the
information - just want to confirm what DSK images are being used.

Thanks


On Tue, Aug 1, 2017 at 3:30 AM, Barry Nelson <barry.nelson at amobiledevice.com
> wrote:

> I have confirmed this issue on my Macintosh build of MAME as of version
> 0.186 and later. David, have you filed a bug report?
>
> > David Ladd davidwladd at gmail.com  <mailto:coco%40maltedmedia.com
> ?Subject=Re%3A%20%5BCoco%5D%20%5BCOCO%5D%20MAME%20FDC%
> 20Issue%20that%20can%20cause%20corruption&In-Reply-To=%
> 3CCAHW2jkD0ehDiQ7H--G5TxgskT4X3pWxnUuy-XEtkdOd56gMY1Q%40mail.gmail.com%3E>
> > Tue Aug 1 01:50:32 EDT 2017
> >
> > If you want to try it out the simplest way to show this off is to do
> this:
> > Startup CoCo 2 or CoCo3 emulation
> > Create a new disk image in drive 0
> > Create a new disk image in drive 1
> > DSKINI 0
> > DSKINI 1
> > Enter a quick basic program like this and save it to disk:
> > 10 PRINT "DIR 0"
> > 20 DIR 0
> > 30 PRINT "DIR 1"
> > 40 DIR 1
> > 50 GOTO 10
> > SAVE"TEST1.BAS"
> >
> > Then all you have to do to see the problem is to:
> > DIR 0:DIR 1
>
> --
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