[Coco] 8" Disks and NitroOS9

[David Gettle]

Just my $0.02, I used the d1_80d.dd discriptor from the OS-9 level 2 ver
2.00.00 config disk (or was it the OS-9 Level1 ver 2.00.01 config disk?)
intended for 8 inch drives with 3.5 inch disks for years with no problem. I
don't remember the dmode settings, but the settings in that file should
work.

I haven't run regular OS-9 in years, so pardon my lack of being certain
which disk I got the file from.

On Fri, Mar 16, 2018 at 3:30 PM, Mark Marlette <mmarlette at frontiernet.net>
wrote:

> Bill,
> A 8" disk had a transfer rate of 500Kbs, going from memory here but there
> was no standard CoCo disk controller that did that data rate.
> You could hack the old 3029(??), I did one here but was like building a
> new card.
> The data transfer rate is the same as what was used in the small 3.5"
> disk, so the CoCo could do HD transfers.
> Regards, Mark Marlette
>  http://www.cloud9tech.com
> mark at cloud9tech.com
> mark at gamecamaddict.com
>
>       From: Bill Gunshannon <bill.gunshannon at hotmail.com>
>  To: "coco at maltedmedia.com" <coco at maltedmedia.com>
>  Sent: Friday, March 16, 2018 2:19 PM
>  Subject: Re: [Coco] 8" Disks and NitroOS9
>
>
> That one was easy.  I was much more concerned about the ones like:
>
> typ, dns, wpc and rwc.
>
>
> bill
>
>
> On 03/16/2018 02:05 PM, David Ladd wrote:
> > Bill,
> >
> > for 77 tracks should be:
> >
> > dmode /d1 cyl=4D
> >
> > replace /d1 with the drive descriptor you have the 8" drive configured
> for.
> >
> > +-----------------------------------------------------------
> ------------+
> > | 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 Fri, Mar 16, 2018 at 12:55 PM, Bill Gunshannon <
> > bill.gunshannon at hotmail.com> wrote:
> >
> >> First, thanks everyone for the help with cases.  I got one for
> >>
> >> my COCOSDC and one for a Glenside IDE (I'll need more of
> >>
> >> them eventually and probably the SDC Case as well as I hope
> >>
> >> to get a couple more SDC's too).
> >>
> >>
> >> Now my next project.  Has anyone here used 8" disks with
> >>
> >> NitrOS9?  I have an Tandon 8" hooked up to my COCO3 using
> >>
> >> the Floppy Adapter from Dbit.com (John does great work, the
> >>
> >> power board for the Tandon is also one of his projects.)  I was
> >>
> >> able to DSKINI a disk and write and read back a BASIC program
> >>
> >> with it.  But that was just as a default COCO floppy.  Now I want
> >>
> >> to get it working as a true 8" disk with access to all 77 tracks.
> >>
> >> Anybody tried this?  My first attempt to format a disk using the
> >>
> >> default DMODE which would be the same as under ECB failed.
> >>
> >> Does anyone have DMODE parameters that are known to work
> >>
> >> with real 8" disks?
> >>
> >>
> >> bill
> >>
> >>
> >>
> >> --
> >> 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
>
>
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>