ATAPI-4 mode for CompactFlash

From: Martin (martinfnp_at_yahoo.com)
Date: 03/30/04 

Date: 30 Mar 2004 01:15:07 -0800

I want ask which mode is using CompactFlash device. It's not clear
from ATAPI-4 spec. Is it always PIO in/out protocol or can I even run
write/read in any of DMA modes?