I am about to develop a Compact Flash I/O device for PDA (DELL AXIM). Fortunately I found a CF interface chipset with a UART port (Oxford Ox950). Now I got a few questions about the firmware design.
1) For the PDA side (Using PocketPC2003), I think the PDA already has an "integrated" CF driver inside of PPC2003, right? If I want to rewrite this driver, what should I do? What kind of tools should I have (like Platform Builder)?2) For the CF I/O peripheral side, can I rewrite the driver? From the data sheet of Oxford OX950, it seems that the driver is already integrated into the chipset. Is it possible for me to rewrite the driver since I want to control its 2 customrized I/P pins?
Thanks.
Johnson