DAC_BLANKING      300 include/video/aty128.h #define DAC_BLANKING				0x00000004
DAC_BLANKING      710 include/video/mach64.h #define DAC_BLANKING            0x00000004
DAC_BLANKING      700 include/video/radeon.h #define DAC_BLANKING				   (1 <<  2)