CRTC3_REGISTER_OFFSET
#define CRTC3_REGISTER_OFFSET (0x447c - 0x1b7c)
#define CRTC3_REGISTER_OFFSET (0x447c - 0x1b7c) //(0x111f0 - 0x6df0)/4
#define CRTC3_REGISTER_OFFSET (0x419c - 0x1b9c)