mmCRTC_V_BLANK_START_END
*vbl = RREG32(mmCRTC_V_BLANK_START_END + crtc_offsets[crtc]);
*vbl = RREG32(mmCRTC_V_BLANK_START_END + crtc_offsets[crtc]);
*vbl = RREG32(mmCRTC_V_BLANK_START_END + crtc_offsets[crtc]);
CRTC_REG(mmCRTC_V_BLANK_START_END));
addr = CRTC_REG(mmCRTC_V_BLANK_START_END);