[Coco] Running SuperIDE on the Dragon (in CoCo mode)

[Ken H.]

I have managed to successfully run SuperIDE on the Dragon in CoCo mode!

Here is a video demo: http://youtu.be/519m59Xs0IE (sorry for the poor video
quality)
The idea is based on Phill Harvey Smith's experiments in running Drivewire
on the Dragon.

Let me be clear on that: HDB-DOS has NOT been converted yet to run on the
Dragon natively.
Without such conversion the Dragon cannot access the SuperIDE compact flash
when operating as a Dragon.

However, the Dragon can access the SuperIDE compact flash virtual disks,
when using modified ROMS that allow it to act as a dual Dragon/Coco
machine. No hardware modification is required, just swapping new Eproms
instead of the Dragon's roms (which are socketed and not soldered, at least
on the Tano Dragon).

Once you swap the roms the process is very simple:  turn on the Dragon,
type EXEC to switch to CoCo mode and then type DLOAD to load the dos rom
(HDB-DOS).

I have used the roms which were uploaded by Steve (zephyr) to the Dragon
Archive forum (
http://archive.worldofdragon.org/phpBB3/viewtopic.php?f=7&t=619#p4034)
These roms create a dual boot system. Actually its quad-boot:  1)Dragon
2)DragonDOS 3)ECB CoCo 2 4) DECB/HDB-DOS CoCo2.

The dragoncoco64_ic17_ic18 file has 2 rom images, replacing the Dragon's
IC17&IC18 roms. Using these new roms the Dragon powers up as a regular
Dragon, with DOS/program pak disabled. Type DLOAD to load DOS/program pak,
or type EXEC to switch to CoCo mode.
The concept is similar to Phill Harvey Smith's DragonCoco roms, but include
keyboard remapping in rom, hence no rewiring is required (perhaps losing
some compatibility with programs that access the keyboard directly).

Haven't tried running NitrOS9 L1 on the Dragon with SuperIDE yet, but it
should work. I guess it would require a custom boot disk with the CoCo boot
kernel, superdriver and the rest of the Dragon's modules.