Oh oh! I had one of those too. And I loved Oh Mummy!. And I also played Roland on the Ropes lots, though i'd entirely forgotten about it until you mentioned it just now. Never saw Roland in the Caves though.

About a year ago I went on a similar quest, and after lots of googling and asking Barry which questions to ask/sites to go to, I found another game that I used to play on the Amstrad. I found it! (can't remember the name right now) and I found a simulator and a copy to play! Whee!

Now I want to play Oh Mummy! and Roland on the Ropes again. I never won it.. and now I want to!