I did it :D
I use Suky's library (SDCard_Hard.c)... Now I can read and write directly to SD cards in Proteus (I save the SD card image in a .mmc file, from where i can see - with winhex or notepad - ...
Several things you need to start with:
What voltage is your PIC?. If you are using a 5v PIC device, you _need_ a 3.3v to 5v converter device between the MMC card and the PIC. Resistor divider in the ...