Nick Westgate wrote:
I think there are many possibilities beyond the very cool SD card selector. I wonder if we can standardize on a key sequence to invoke the "hypervisor" mode. Something that is easy to type and yet has no effect on a standard input line or in most games. Esc-1 might work, although I suppose ideally it should be able to be changed on the fly anyway.
Of course the brute force approach is to use a couple of external pushbuttons connected to the unused pins of the JTAG connector. I even have a soft UART for communicating with the z80 using the same pins and a TTL level FTDI USB/serial cable ($18).
-Alex.