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Hi all.

I'm working on a Digilab 2 development board (Xilinx Spartan II-E Chip). I'd like to write out to a SD/MMC card. Are there any VHDL modules available that would help me implement this? Or any other help/advice concerning this topic?

Thank you

Google has a lot of information. Unless you need very high speed use the serial protocol, it is very simple.

I'm sorry ,but I can't looking for any code for implement interface SD/MMC and FPGA.
Can you give me some links ?

The easy part is reading/writing chunks of data to the sd card via spi. You would use a state machine to send various commands along with the contents of a block of ram. Only marginally more difficult, but faster, is to use the 4 bit data bus (4x faster??) And use this module instead of a spi module. The HARD part is to implement fat32. I see theres also an AVR compatible softcore and AVR mmc libraries but wow thats complicated.

http://www.opencores.com/projects.cgi/w ... i/overview
Same interface as HC11 which you might be familiar with. And it has wishbone interface (whatever that means).