I've ported the original Bug-Byte Spectrum version of Manic Miner to the Colour Maximite.
The Maximite only runs BASIC (its own version called MMBASIC) - there's no way to call machine code routines from Maximite Basic. But it does run it very fast, so I was able to get the speed to match the original Spectrum; actually it could run a lot faster.
Most obvious differences are:
- The Maximite game screen (mode 4) is only 240 pixels wide (by 216 pixels high) so I had to trim 8 pixels from both vertical edges of the Spectrum screen to make it fit. Luckily, all the caverns have 8-pixel impenetrable walls up both sides, so the game play is unaltered - you can't see those walls but the edges of the screen act as walls.
- The Maximite only has 8 colours compared to the Spectrum's 15. Doesn't make much difference to the gameplay except to make the distinction between crumbling floors and normal floors less obvious in some caverns.
I've made a video of me playing the first few caverns. I'm not very good at playing!. https://youtu.be/LcbuvVZmD_g
You can download the game (and because it's in BASIC, also the source!) from http://ceptimus.co.uk/MMINER.zip