For anyone familiar with the VUE Debugger Units- has there been any attempt to identify which portions of the PCBs do what (by visual inspection or otherwise)? In addition, how does the Scanner supplied with the debugger unit differ from a standard VB if at all? Could in theory one take a standard VB Scanner and modify it to output debugging signals?*
Specifically, how does the Debugger Unit sync to the actual display on the Scanner. I imagine that the white cable that comes out of the Scanner carries those signals, but it seems like a rather long cable considering that VRAM on the Scanner must be updated frequently (cable losses FTW :D).
*I know one member successfully modded his/her VB to display video on a PAL TV, so I’d guess the answer is “yes”
It’s been a long time since I looked inside the debugger, but basically is a large motherboard with a few small sub-boards. They’re all labeled (EMU CPU, EMU MEMORY, or something like that). There are a few chips that you’d recognize from the VB (VPU, VRM, etc)… but also a lot of other stuff (FPGAs, TTL chips, etc).
The scanner itself is completely different than a normal VB. There’s no VB motherboard inside, and instead it’s replaced with a board that has the white cable coming in, with a few TTL chips. IIRC, the displays, servo board, speakers, and amp board are all standard VB parts though.