Re: R. Odyssey Minefield

["Dr. Wolfgang Otrebski" <wolfgang.otrebski@siemens.at>]

Ben Sokal wrote:
> 
> In the old apple [] game Robot Odyssey, does anybody remember how to
> solve the minefield puzzle on level 4?  I've been playing Robot Odyssey
> on an emulator for my PC and that puzzle's got me stumped!
>                                                   - Ben Sokal

I did it the following way:

designed an encoder and a decoder for four I/O lines
doing 100 101 110 and 111 signals corresponding to u/d/l/r
using the foremost bit as a trigger to lock the shift register
in the decoder circuit, put a robot with a simple state machine and
the encoder wired in parallel to the thruster input into the
"guide" maze, put another robot with the decoder wired to the antenna
output and the thruster inputs into the mines and Lo! here we went

some time ago I tried to reconstruct the enc/dec chip - and failed
miserably having done no TTL electronics for more than 10 yrs

Maybe the hint is enough for You ...
Have Fun,
wolfgang