> I don't think we can safely assume that UDMA can co-operate with non-UDMA > on the same cable. In this case, it might be causing the CF device to falsely > detect control cycles. Improbable and never observed. The PIO address setup timing requires care but not the rest, and especially not UDMA where you've got different signalling and different timing active. Sounds to me like the usual case of people putting CF convertors onto spec compliant cables and ending up with electrical problems. If you stick additional connectors, wires and plugs onto the cable it goes out of spec. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html