Luke> I'd like to know
Hi, thanks Lukem,

The situation seems to be what you most hate (sorry).
It looks code is loaded onto 0x04000 and location 0x4090 seems
to have problem ( or nothing loaded there).

Machine:
StarMax 3000/240 OF 2.0.2
I have 40Mbyte scsi disk connected to ID=6 and
sometimes use it for boot.fs.

(1) boot.fs boots fine:
root@harry  16:28:37/020516(~)# dd if=/a/j/NetBSD/arch/macppc/snapshot/2002040-
1.5ZC/installation/boot.fs of=/dev/rsd0c bs=64k
22+1 records in
22+1 records out
1472512 bytes transferred in 2.713 secs (542761 bytes/sec)
....
Open Firmware, 2.0.2
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
 ok
0 > boot scsi/sd@6:0 
>> NetBSD/macppc OpenFirmware Boot, Revision 1.6
>> (tsutsui@lancer, Tue Apr  9 08:48:34 JST 2002)
3745592+129016=0x3b2144
 start=0x800000
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002

(2) lukem version macppc.fs won't boot:
root@harry  16:25:29/020516(~)# dd if=/a/j/distfiles/macppc.fs  of=/dev/rsd0c bs
=64k
22+1 records in
22+1 records out
1466368 bytes transferred in 2.676 secs (547970 bytes/sec)
....
....
Open Firmware, 2.0.2
To continue booting the MacOS type:
BYE<return>
To continue booting from the default boot device type:
BOOT<return>
 ok
0 > boot scsi/sd@6:0 DEFAULT CATCH!, code=FFF00300 at   %SRR0: 00004090   %SRR1: 00003070 
 ok
0 > 

---
Makoto Fujiwara, 
Chiba, Japan, Narita Airport and Disneyland prefecture.