[Coco] [Color Computer] Re: New member
jdiffendaffer at yahoo.com
Sun May 15 15:07:03 EDT 2005
--- In ColorComputer at yahoogroups.com, "Boisy G. Pitre" <boisy at b...> wrote:
> On May 15, 2005, at 1:45 AM, James Diffendaffer wrote:
> > I got my CoCo's out of storage... does that count as progress?
> It's a first step. Congratulations!
> Sounds like you have your work cut out for you on the hardware end.
> What are your plans for the software?
If I can spend a full day on the hardware I should have it done.
The software will take longer than the hardware.
I haven't even looked at the software specs for USB in over a year.
The transport layer stuff was similar to something I designed once and
this chip simplifies it so that isn't a problem. It's the device
specific stuff that I need to look at.
There's two approaches I see. Port the assembly from the open source
project or write something in C/C++.
6502 is easy enough to port to 6809 but it would still need some work.
That's probably the quickest way to do it.
I don't know how good any of the 6809 C compilers are so that could be
interesting. If I can use a compiler I can always generate the
initial code and hand optimise it when time permits. The nice thing
about C++ is the ease of adding support for new devices... at least if
the object model is good.
I've programmed for Unix, Solaris and Linux but never OS-9 so I need
to study that either way. If RS-DOS is supported a rewrite that
supports USB floppys and some other stuff would be cool. I'd need to
look at a ROM disassebly to see how difficult it is. That's way down
the road though.
Brought to you by the 6809, the 6803 and their cousins!
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