Boot stop at "KDB: current backend: ddb"

[Alaor Barroso]

Hi people, I booted the freeBSD CD in a PowerMac G4 (radeon video
card), and after the message saying to type ENTER the boot proccess
start but after this two lines, the boot process freeze...

KDB: debugger backends: ddb
KDB: current backend: ddb

Help-me guyz.. I'm having very troubles with freeBSD ppc (the last was
the "invalid memory access" like I posted in this list), but I really
want to make it runs in my PPC machine. ={

[]'s