iriver Dicple D88 >> RetroFW
如何透過USB UART Debug
參考資料：
1. github
1. 選擇UART
2. 連接/dev/ttyACM0
$ sudo dmesg
[147462.412097] usb 3-1.2: new high-speed USB device number 30 using ehci-pci
[147462.520931] usb 3-1.2: New USB device found, idVendor=0525, idProduct=a4a7, bcdDevice= 2.9b
[147462.520934] usb 3-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[147462.520936] usb 3-1.2: Product: Gadget Serial
[147462.520938] usb 3-1.2: Manufacturer: Linux 2.6.24.3 with jz4740_udc
[147462.520939] usb 3-1.2: SerialNumber: 0
$ sudo minicom -c on
3. 雙系統啟動腳本位於：/usr/launcher
