UP SD card IP core compatibility

Hi,

I am using SD Card University IP core with a DE board. I have two SD cards a 128MB and a 2GB, but none is working with the core. The cards are detected but the function alt_up_sd_card_is_FAT16() returns a wrong result. I have tested with a simple program:

# define READ_BLOCK 17

int main(void) {

int *command_argument_register = ((int *)(0x0100122C));

short int *command_register = ((short int *)(0x01001230));

short int *aux_status_register = ((short int *)(0x01001234));

short int status;

/* Wait for the SD Card to be connected to the SD Card Port. */

do {

status = (short int) IORD_16DIRECT(aux_status_register, 0);

} while ((status & 0x02) == 0);

/* Read 11th sector on the card */

IOWR_32DIRECT(command_argument_register, 0, (10) * 512);

IOWR_16DIRECT(command_register, 0, READ_BLOCK);

/* Wait until the operation completes. */

do {

status = (short int) IORD_16DIRECT(aux_status_register, 0);

} while ((status & 0x04)!=0);

}

but the aux_status_register indicates a read error on bit 5.

My hardware is configured as shown below(VHDL):

NiosII: nios_system PORT MAP (

b_SD_cmd_to_and_from_the_SDCard_Interface => SD_CMD,

b_SD_dat3_to_and_from_the_SDCard_Interface => SD_DAT3,

b_SD_dat_to_and_from_the_SDCard_Interface => SD_DAT,

o_SD_clock_from_the_SDCard_Interface => SD_CLK,

out_port_from_the_Display => count,

out_port_from_the_LEDs => LEDG,

zs_addr_from_the_sdram_0 => DRAM_ADDR,

zs_ba_from_the_sdram_0 => DRAM_BA,

zs_cas_n_from_the_sdram_0 => DRAM_CAS_N,

zs_cke_from_the_sdram_0 => DRAM_CKE,

zs_cs_n_from_the_sdram_0 => DRAM_CS_N,

zs_dq_to_and_from_the_sdram_0 => DRAM_DQ,

zs_dqm_from_the_sdram_0 => DRAM_DQM,

zs_ras_n_from_the_sdram_0 => DRAM_RAS_N,

zs_we_n_from_the_sdram_0 => DRAM_WE_N,

clk_0 => CLOCK_CPU,

reset_n => pll_locked and KEY(0)

);