>that Brian Troha picked up the other day is actually Explorer.
Looking forward for BrianT doing another Guru-like pcb info and adding it to the Deco cassette source file. That pcb hardware definitely needs documenting since it is one of the few cassette games where the pcb and roms are required for a game like Explorer to run.
btw: Notice how flyer describes different hardware arrangements: conventional or cassette. I wonder if a pcb version can still be found later, but it seems they would have been spotted by now. Makes me want to guess that maybe Data East eventually decided to market games as cassette only rather than market both conventional and cassette hardware versions.