Joshua 
Hi I have a Samsung board based on S3C6410 that called SBC6410 in introduction file. This board has a pre-installed Windows CE 6.0 and i don't want to create new image and want to use same exist OS. I can't find how to use GPIOs or "User Buttons" or "User LEDs" on board. This is the list of Drivers that exist in BSP\SRC\DRIVERS: CAMERA CF_ATAPI CMM DISPLAY DM9000A DMA DrvLib HSMMC IIC JPEG Keybd MFC NANDFLASH OTG POWERCONTROL POWERBUTTON SERIAL SPI TOUCH UAO USB WAVEDEV WIFI_SDIO My problem is that i can't create new image so i can't create new driver and i want to use OS that already exist. I tried to use something like this: #define GPNCON 0x7F008830 #define GPNCON_REG (*(volatile unsigned long *) GPNCON) and compile as DLL and use in application, but i got an Abort error. I find this link: http://www.friendlyarm.net/forum/topic/4717 that has same problem but it doesn't help because the solution in that topic is an Image file that include LEDDriver and that image file download link is corrupted. Can anybody help me to use GPIOs on this board? Thanks