> I am interested in porting netbsd to the ti89 (and maybe ti92+) texas
> instruments graphing calculators.

That would seriously rock.

> The ti89 has a motorola 68000 (no FPU i believe) 10 MHz processor and
> 512 kb of memory.

MMU?  If not, I'm not sure NetBSD would be a very good place to start.
But hey, as the saying has it, the person who says it cannot be done
should not interrupt the person doing it.

You might be able to get somewhere by designing an extremely CISC
p-code machine and porting to that.  It'd sure keep your text segments
small, though a half-meg of RAM is pretty tight for data alone.

> Fortunately should be able to get some help from others in the
> calculator community, and hopefully learn a lot myself too.

Well, win-lose-or-draw, you're bound to learn a lot.

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