It looks like CC65's assembler supports the '816, but the C compiler does not? Hmm.
Anyone ever mess with this?
Are there any other //gs cross compilers out there? Doesn't look like WDCTools can target the IIgs. Most of the '816 stuff I am finding is for the SNES.
I don't think I'm smart enough to patch cc65's compiler to emit proper '816 asm...