Promise SATA TX4 Controller on FreeBSD-Current -- problems

Per advise of several people, I purchased a Promise SATA controller 
(TX4) for FreeBSD-5.

I installed the card today, plugged the drives in (in the correct slots 
and order), and the system fails to boot.  Particularly, when you try to 
boot from the CD's, this (large) error is displayed and the system halts.

The system runs a SOYO Dragon Platinum motherboard, which has the 
on-board Silicon Image controller (which I had working before, BTW).

I'm hoping someone here can decode this, as it took quite a long time to 
hand-write down and type in:

Building the boot loader arguments
Looking up /BOOT/LOADER... Found
Relocating the loader and the BTX
Starting the BTX loader

BTX loader 1.00 BTX version is 1.01
Console: internal video/keyboard
BIOS CD is cd0
BIOS drive A: is disk0

int=0000000d  err=000045e4  efl=00010046  eip=0000925b
eax=00000000  ebx=00000000 ecx=0000feff  edx=0000fe04
esi=0000000c  edi=00000000  ebp=00000000 esp=000017e0
cs=0008  ds=0010  es=0000  fs=0000  gs=0000  ss=0010
cs:eip 1f 0f a1 0f a9 cf fc 6a-10 1f 60 89 e5 0f b7 7d
         2c 01 e7 04 8b 75 28 01-fe 31 c9 b1 02 31 c0 ac
ss:esp=e6 45 00 00 00 00 00 00-00 00 00 00 00 00 00 00
           00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00

As far as I can tell there is no conflict with the motherboard/BIOS.   I 
tried to disable the on-board SATA (set to IDE only) and that made no 
difference.  It's a separate bus.

Any info would be appreciated.


Thanks....