NetBSD 4 kernel from today's sources on a Motorola Starmax:

ofb0 at pci0 dev 17 function 0: ATI Technologies Mach64 VT
trap: pid 0.1 (swapper): kernel PGM trap @ 0 (SRR1=0x81032)
panic: trap
Begin traceback...
0x005977d0: at trap+0x124
0x00597850: kernel PGM trap by 0x0: srr1=0x81032
             r1=0x597910 cr=0x39a33e59 xer=0xe000be6f ctr=0
0x00597910: at vcons_init_screen+0xf0
0x00597940: at ofbattach+0x160
0x00597aa0: at config_attach_loc+0x2f8
0x00597b00: at pci_probe_device+0x2f4
0x00597b80: at pci_enumerate_bus+0x1d8
0x00597bc0: at pcirescan+0x18
0x00597bd0: at config_attach_loc+0x2f8
0x00597c30: at bandit_attach+0x21c
0x00597d20: at config_attach_loc+0x2f8
0x00597d80: at mainbus_attach+0x11c
0x00597e50: at config_attach_loc+0x2f8
0x00597eb0: at cpu_configure+0x20
0x00597ec0: at configure+0x30
0x00597ee0: at main+0xd8
0x00597f30: at 0x10009c
End traceback...
rebooting


Any ideas?