Instead of using a big, awkward, expensive, uncommon 8PDT switch to flip-flop D0-7, has anybody tried using a pair of Quad 2-input multiplexers?
Seems like you could just wire them up to the data lines, once forwards (D0-7) on source A inputs, and once backwards (D7-0) on source B inputs & use a SPDT switch to toggle the Select lines between high & low, switching the outputs between normal/reverse.
Does that even make sense?
I'm just kinda getting into digital electronics, so please tell me why this wouldn't work (if it doesn't). If it's never been tried... if I can find another bare TG16 console I just might give it a shot.