CRTC2_V_TOTAL_DISP   59 include/video/aty128.h #define CRTC2_V_TOTAL_DISP			0x0308
CRTC2_V_TOTAL_DISP   31 include/video/mach64.h #define CRTC2_V_TOTAL_DISP	0x0008	/* Dword offset 0_02 */