[Coco] Hello Aaron help dragon

[Phill Harvey-Smith]

On 17/05/2011 17:07, Aaron Wolfe wrote:
> On Tue, May 17, 2011 at 11:55 AM, Darren A<mechacoco at gmail.com>  wrote:
>> On 5/17/11, Phill Harvey-Smith  wrote:
> This sounds promising.  Was there ever an HDBDOS for Dragon?  I'm
> guessing not.. what would be involved in getting the bitbanger
> routines into a Dragon compatible DECBish ROM?  As I recall there are
> some differences with rom routine locations and the keyboard stuff,
> maybe more.

I have partially commented disassembilies of both the official 
DragonDos, and the aftermarket SuperDos, that can be assembled using 
mamou, and will produce identical binaries to those that they where 
disassembled from.

These would be a good starting point for conversion, I did once have a 
go at hacking DW2 to run in this environment, though using an FTDI 
module to do serial over USB, this worked reasonably well, so it should 
be able to be done. The CoCo 1/2 serial code should run without 
modification asuming that it doesn't make any calls to the CoCo rom, and 
that it initialises the PIA lines correctly.

Cheers.

Phill.