Hello, I am using the VHAM to develop some code for the Gameboy Advance. There is an option to debug the code with the GDB insight. Is there any schematic for an upload-cable (like XBOO) that connects to the PC via serial port and to the GBA via the user port? The cable should be to upload the gba-file to the GBA in order to debug it without having to put it on the supercard each time. Or perhaps someone has some documentation on the user port and multiboot so that I can construct an inteligent USB cable with a microcontroller? I would share the code and schematic to the community, because I have seen that there is demand for a USB solution. Thank you very much. Best regards K.