Allen Briggs wrote;
I was under the impression that the 440 was some kind of a PowerPC clone.There are several different families of PowerPC chips. The ones I can think of off-hand (I haven't done much with PPC lately):
I think there are at least three different "MMU architectures" in Power/PowerPC and NetBSD currently supports only one of them. 1. OEA (correct term?) in the original Power aspect of address space and PTE management; original PPC and G2/G3/e300/e600 variants. 2. MPC860 32bit software controlled i/D TLB management scheme. 3. BookE specification, simplied 32bit address space management with software controlled i/D TLB. In my knowledge the last one covers e500 and 440 while I am not sure how close they are in pmap.c coding practice. Toru Nishimura / ALKYL Technology