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LPC2387 MMC interfacing

Hi,

I am using MMC card interfacing program from LPC23XX code bundle. But it can't detect what type of card means multimedia card or sd card.
I make also changes in IRAM2 & giving address 0x7FD00000. But the problem remain same. I also check hardware but it OK .

For testing purpose I use sandisk 4 Gb memory card. Anyone can you help me please?