Changes

These registers are used to access the system [[Flash_Filesystem|NAND]] and the inserted SD card. Both devices use the same interface.

These registers are used to access the system [[Flash_Filesystem|NAND]] and the inserted SD card. Both devices use the same interface. HCLK of the SDMMC controller is 67.027964 MHz (double of the DSi HCLK).

=Registers=

=Registers=

| 0x10006000

| 0x10006000

| 2

| 2

|

| Boot9, NewKernel9Loader, Process9

|-

|-

| style="background: green" | Yes

| style="background: green" | Yes

| ?

| EMMC_PORTSEL

| 0x10006002

| 0x10006002

| 2

| 2

|

| Port selection, 0 = SD card, 1 = NAND

|-

|-

| style="background: green" | Yes

| style="background: green" | Yes

|-

|-

| style="background: green" | Yes

| style="background: green" | Yes

| EMMC_STATUS0

| [[#EMMC_STATUS0|EMMC_STATUS0]]

| 0x1000601c

| 0x1000601c

| 2

| 2

|}

|}

The IO interface for SDMC/NAND seems to be very similar to the DSi; see libnds for [https://github.com/devkitPro/libnds/blob/master/source/arm7/sdmmc.c sample code] and [https://github.com/devkitPro/libnds/blob/master/include/nds/arm7/sdmmc.h documentation], and GBATEK for [http://problemkaputt.de/gbatek.htm#dsisdmmcioportscommandparamresponsedata better documentation].

The IO interface for SDMC/NAND seems to be very similar to the DSi; see libnds for [https://github.com/devkitPro/libnds/blob/master/source/arm7/sdmmc.twl.c sample code] and [https://github.com/devkitPro/libnds/blob/master/include/nds/arm7/sdmmc.h documentation], and GBATEK for [http://problemkaputt.de/gbatek.htm#dsisdmmcioportscommandparamresponsedata better documentation].

3DS SDMC/NAND IO registers are located at 0x10006000 and apparently mirrored at 0x10007000. It seems the 0x10007000 mirror is never used on retail units.

3DS SDMC/NAND IO registers are located at 0x10006000 and apparently mirrored at 0x10007000. It seems the 0x10007000 mirror is never used on retail units.

|-

|-

| 5

| 5

| SD card insertion status (?) (0 = missing, 1 = inserted)

| SD card insertion status (0 = missing, 1 = inserted)

|-

|-

|}

|}