R_85_I_PORT_SIGNAL_POLAR
saa711x_write(sd, R_85_I_PORT_SIGNAL_POLAR, 0x20);
saa711x_write(sd, R_85_I_PORT_SIGNAL_POLAR, 0x21);
R_85_I_PORT_SIGNAL_POLAR, 0x21,
{R_85_I_PORT_SIGNAL_POLAR,1,