Fasttrack TX2 - Raid10, dmsetup table example?

Hello.

Got a raid10 array on a pdc20270 controller, fasttrack100 tx2.
Some loss of power made some serious damage to the complete pc.
The disks however are still working - the controller is a little bit 
broken - no boot message about the raid things, only ide does still 
work, more or less ( dma errors etc. pp ).

So i took the drives and put in on a normal ide controller - they are 
all recognized.
running dmraid on a 2.6.17 kernel, ubuntu edgy, does found nothing.

Drives are found as follows:

hda, hda1
hdb - unknown partition table
hdc, hdc1
hdd - unknown partition table

I know there was a 10 setup prior on these 4 disks - although i don't 
know how the pdc controller does the mapping on 4 drives.

Is it possible to create the mappings for a raid10 again - to get the 
only partition on those drives back?
Anyone a example, found many for raid0 or raid1, but nothing for 10 - i 
don't want to do some damage to the raid ( i hope its still there ... ), 
so i'll asking before.

thx for any help.

kind regards

Torsten