Which port to use?

[Richard Danter <richard.danter%ntlworld.com@localhost>]

Hi All,

I would like to port NetBSD to a new board but it seems there are 
several different PowerPC ports and I am not sure which to start with.

The board contains a MPC7400 with a 107 memory controller using address 
map B (CHRP). The bootloader is U-Boot, which I have almost finished 
porting (it boots from Flash, just need to get the network working).

Any suggestions which of the PPC ports I should start with? Any other 
advice?

Thanks
Rich