PCI real time video to disk

["Daniel DeConinck" <daniel.deconinck@sympatico.ca>]

Hello,

 

I have designed a PCI target with video capture. I need to stream 12.5MB/sec to hard disk on a wintel PIII platform.

 

Should I:

-move the data across the PCI bus from my PCI device to PC main memory

-then make a BIOS call to save memory to disk.

 

OR

 

-should I just leave the memory on my target PC and call the BIOS disk save command ?

 

 

What path does data take when going to the hard disk (in a typical wintel PIII) ?

Does it  originate from any memory address either on a PCI device or mother board ?

 

Do the hard disk controllers connect directly to the CPU bus or is the hard disk controller a PCI device ?

 

Dan DeConinck