[Coco] Re: 6X09 -> HC11/HC12

[Tim S]

It should be sorta easy to convert ASM code from HC11 to work on 6809, but
the HC11 has less registers than 6809 so it will be a little harder going
the other way.
If you wish to convert 6809 to HC1x I would choose the HC12 or HC16.  My
info comes from only reading the Programming manuels on the three CPUs.
( Note: from a pin-out point of view the HC16 looks a lot like the 68000)

None of the four CPUs are Binary code compatible.
The HC11 is mostly ASM compatible with the 6800, it was designed to be easy
to re-assemble 6800 code with very minor changes on the HC11.

Tim S