what bus architecture should I choose for my custom DAQ board?

Hi all,

Recently, I ordered a FPGA development board of Xilinx (ML403) with a 
PPC core inside the main FPGA chip, and Linux is ported to it by Xilinx. 
What i want to do is to design a 8 channel A/D and 8 channel D/A 
daughter card of the development board and write the comedi driver for 
the daughter card. I choose 2 parallel interface A/D and 2 parallel D/A 
chip (all are 16bits) and connect them to the local bus of PPC core, can 
I write Comedi driver to it? I notice that Comedi driver is mainly for 
that of PCI bus architecture DAQ cards. Thanks in advance.

Best Regards,

Wicky