Re: Coroutines and Go

[Enrico Colombini <erix@...>]

David Given wrote:
> I've tried making C compilers work on the 6502 and Z80; while they do
> have stacks, they only really like doing pushes and pops and are
> egregiously unoptimised for stack frame random access. 

I don't remember if I ever looked into the produced code, but The Manx C 
compiler I used on the Apple II seemed to work fine. I don't think I 
measured its efficiency, though, because I used it mainly for high-level 
code. It would be interesting to dig it up and see what tricks it used.

Anyway, that's why I mentioned the 6809: as far as I know, it was the 
first 8-bit CPU specifically designed to make stack frames easy to use 
(e.g. it had frame pointer-relative instructions). It turned out to be 
actually slower than the 6502 in my applications, but that's another 
matter :-)

  Enrico