SAA7134_STATUS_VIDEO1
int v1 = saa_readb(SAA7134_STATUS_VIDEO1);
u8 st1 = saa_readb(SAA7134_STATUS_VIDEO1);
if (0 != (saa_readb(SAA7134_STATUS_VIDEO1) & 0x03))
st1 = saa_readb(SAA7134_STATUS_VIDEO1);