CRTC_PITCH
aty_st_le32(CRTC_PITCH, crtc->pitch);
save->crtc_pitch = INREG(CRTC_PITCH);
OUTREG(CRTC_PITCH, mode->crtc_pitch);
OUTREG(CRTC_PITCH, 32);
OUTREG(CRTC_PITCH, 0xa0);