I was looking at this (in the file src/sys/arch/amigappc/amigappc/machdep.c

---
	/* force memory mapping */
	PPCmem[0].start = 0x8000000;
	PPCmem[0].size  = 0x5f80000;
	PPCmem[1].start = 0x7c00000;
	PPCmem[1].size  = 0x0400000;
---

and I am wondering if this is like this because
amigappc port is experimental (really experimental) or
if there is another reason that I missed ?

And another question:
chip mem does not seam to be included in PPCmem segments, why ?
-- 
Nicolas Bruno BASTIEN