I've been watching ghostbusters tonight on cable, and suddendly had a flashback : I remembered playing a ghostbusters game on a "portable" PC in the late 80's / early 90's (though the game & hardware were probably older).

I'm pretty sure it was a Compaq; it was the size of a Hi-Fi speaker laid on one side if not bulkier, had a monochrome, orange-tinted LCD diplay (!?) which could slide up and tilt back from the brick, and a handle - though the thing was heavy as lead. I don't know where the keyboard hid, it probably slid under, and of course there was no mouse.
The game used paper-based copy protection (i.e when you need to refer to a paper manual to pass the first screens of questions), and I didn't understand shit, there were different play sequences, with rope swinging and wall climbing maybe, and the display killed my eyes.

Was the computer simply a very old IBM PC ? Or maybe a different architecture ? What game is that (probably Ghostbusters II, d'oh) ? Can it be played in an emulator ?

Thanks for any info !