[Coco] Hacking the SuperIDE

[Retro Canada]

on my side I could not make the /ih descriptor to work.

There is something broken here. First it mounts itself as I0 and the
offset is zero, as well as stp and

On Wed, Oct 3, 2012 at 12:20 PM, Gene Heskett <gheskett at wdtv.com> wrote:
> On Wednesday 03 October 2012 11:55:51 Retro Canada did opine:
>
>> For HDB-DOS, the offset is 3 byte long. So I believe it can be
>> $FFFFFF-(256*630) maximum.
>
> That is an HDBDOS restriction.  If running nitros9, and your bootfile
> includes /sh.dd, then be aware that the dmode utility can be used to make
> quite a few of the 256 disk sets of rsdos formatted virtual disks
> available.
>
> For instance, I have 2 1Gb drives on my tc^3 scsi controller.  Address 0 on
> the scsi bus is my work drive, and is partitioned for $1DBB90 sectors as
> /dd.  That is about 498 megs, using a cluster size of 4.
>
> Normally, a dmode of the /sh descriptor says the offset is also set to
> $1DBB90.  This is the "wpc=1D ofs=BB90" in dmode.  In the /sh descriptor
> for the superdriver, the stp value is used as the vdisk to access, so if
> stp=$80, that is the drive my copy of HDBDOS can boot from.
>
> BUT, until I run out of drive, there is no reason the offsets in /sh cannot
> be modified (write it on the wall so you can restore) by using dmode to
> increase this offset value by an additional $27600 for every additional 256
> vdisk set you need.  On one of those 4Gb CF cards, that is a huge bunch.
>
> I think what I would do would be to write me a bunch of scripts called
> dmodesh# where # was the set of vdisks you wanted to look at.
>
> Cheers, Gene
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