mgarcia
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Yes, that's were I saw the green hill stub.Serial port update:
Digging though this data getting ready for the talk (trying to remember where I found bits of info) https://drive.google.com/file/d/1Q4WfAm9hfiWDh2Sg83zuOpm4JLTHXcnF/view?usp=sharing
There is a subdirectory for the "Serial Adapter Schematics" which has all the info to build one and some sample code that I assume is a test program for it. Looks like they put the polyface into a IO mode then drive a parallel load UART chip to generate serial. If I had to guess I bet there is not support for that in the BIOS to load code into ram. But could be wrong someone with more skill than I would have to do some digging. If the support is there should be possible to emulate it.
The dev's used the green hill debugger to upload...
I'm not sure if the schematics is from that device or not, but whoever has that device, please take some high resolution photos!
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