BT459_ADDR_HI
dac_write(par, BT459_ADDR_HI, 0x00);
dac_write(par, BT459_ADDR_HI, 0x03);
dac_write(par, BT459_ADDR_HI, 0x00);
dac_write(par, BT459_ADDR_HI, 0x03);
TGA_WRITE_REG(par, BT459_ADDR_HI << 2, TGA_RAMDAC_SETUP_REG);