[Coco] MAME FDC Issue that can cause corruption

[David Ladd]

Ron,

Thank you for helping on this.

Hopefully now that we know that the issue started showing up in 0.163 and
all the way to the current version.  Then with all the examples those who
have posted and provided information as well on these bug reports we can
now wait and see what solution that they can find and have it up and
running in a safe manner :D

+-----------------------------------------------------------------------+
| David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
| YouTube: http://www.youtube.com/user/PacoOtaktay                      |
| YouTube Gaming Live: https://gaming.youtube.com/user/PacoOtaktay/live |
| Websites: http://dwladd.com     &     http://www.theterrorzone.com    |
| G+:  https://plus.google.com/113262444659438038657                    |
| G+:  https://plus.google.com/+DavidLaddPacoOtaktay                    |
|                                                                       |
| Do you have your CoCo 3 yet?                                          |
+-----------------------------------------------------------------------+


On Tue, Aug 1, 2017 at 4:42 PM, Ron Klein <ron at kdomain.org> wrote:

> Everyone,
>
> Thanks a bunch to David for all his work on this finding, testing and
> documenting this FDC issue.
>
> MAME bug report submitted:
>
> http://mametesters.org/view.php?id=6640
>
>
>
> On Tue, Aug 1, 2017 at 11:00 AM, David Ladd <davidwladd at gmail.com> wrote:
>
> > Barry,
> >
> > The only bug report I have filed was in relation to OS-9 L2/NitrOS-9 L2
> and
> > coco3/coco3h thus far:
> > http://mametesters.org/view.php?id=6639
> >
> > I need to make videos and also show that I can also re-produce this in
> the
> > coco12.cpp branch as well.
> >
> > I do not know how to use the Dragon part of the emulation so would be
> > interested to see if the Dragon uses the same FDC driver base and if so
> if
> > the problem is also re-producible there as well.
> >
> > +-----------------------------------------------------------
> ------------+
> > | David Ladd a.k.a. PacoOtaktay a.k.a. Drencor                          |
> > | YouTube: http://www.youtube.com/user/PacoOtaktay
> |
> > | YouTube Gaming Live: https://gaming.youtube.com/user/PacoOtaktay/live
> |
> > | Websites: http://dwladd.com     &     http://www.theterrorzone.com
> |
> > | G+:  https://plus.google.com/113262444659438038657
> |
> > | G+:  https://plus.google.com/+DavidLaddPacoOtaktay
> |
> > |                                                                       |
> > | Do you have your CoCo 3 yet?                                          |
> > +-----------------------------------------------------------
> ------------+
> >
> >
> > 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
> > >
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > https://pairlist5.pair.net/mailman/listinfo/coco
> > >
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > https://pairlist5.pair.net/mailman/listinfo/coco
> >
>
> --
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>