Is anyone working on a Z80 port?

[DJ Delorie]

> I spec'd one out a long time ago for Cygnus/Red Hat, but we never 
> pursued the port.  The register model on the z80 will be problematical, 
> though some of the lessons from the rl78 port would probably be useful.

The RL78 is very much a modern decendent of the Z80 architecture so might
serve as a good starting point.

But yeah, it's a messy port because gcc doesn't like the weird
addressing model.  I ended up using a virtual ISA that gcc could deal
with, then converted that to real instructions after reload.