CRTC2_EN          286 include/video/aty128.h #define CRTC2_EN				0x02000000
CRTC2_EN          398 include/video/aty128.h #define CRTC2_EN				0x02000000
CRTC2_EN          615 include/video/mach64.h #define CRTC2_EN		0x00200000	/* LTPro */
CRTC2_EN          555 include/video/radeon.h #define CRTC2_EN                                   (1 << 25)