wince configures six DMA channels this way: 0,1 -> IRDA rx/tx, 2,3 -> MCP audio rx/tx, 4,5 -> Ser3(serial port) rx/tx USB and VGA use busmaster access to RAM. For some reason the DDAR2 is trashed in linux. This can be some side effect of PCMCIA/CF setup/operation... Oleg.