BCI_CMD_SET_ROP
BCI_CMD_SET_ROP(cmd, 0xCC); // use GXcopy for rop
BCI_CMD_SET_ROP(cmd, 0xF0); // use GXcopy for rop
BCI_CMD_SET_ROP(cmd, 0xF0); // use GXcopy for rop
BCI_CMD_SET_ROP(cmd, 0x55); // use GXinvert for rop