CRTC_EN
crtc->gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN | pix_width | c_sync;
~(CRTC_EXT_DISP_EN | CRTC_EN), par);
aty_st_le32(CRTC_GEN_CNTL, crtc->gen_cntl & ~CRTC_EN, par);
newmode->crtc_gen_cntl = CRTC_EXT_DISP_EN | CRTC_EN |
cgc |= CRTC_EN;