AGP_CNTL           30 include/video/aty128.h #define AGP_CNTL				0x0174
AGP_CNTL          493 include/video/mach64.h #define AGP_CNTL		0x054C	/* Dword offset 1_53 */
AGP_CNTL           25 include/video/radeon.h #define AGP_CNTL                               0x0174