I know this is kind of a longshot since the Micron is pretty old by now... But I figured it wouldn't hurt to ask.
The particular Malstrom patch is a Polysynth patch called "Jumping Chip" which has two oscillators PWM + SQUARE (offset by 1 octave + 7 semis). It doesn't have any filters but its got both LFOs enabled which are doing most of the shaping.
MOD A - curve 23 (looks like stairs going up then down); applies to OSC A + B
This mod arpeggiates the notes up and then back down several octaves
MOD B - curve 11 (sawtooth wave); applies to OSC A
This mod adds a phasing click noise which sweeps up and down at 1/4 the speed of MOD A.
So far I've been able to recreate the MOD A using the micron's arpeggiator but there isn't a sawtooth shaped LFO on the Micron.
Anyone have experience working with the Malstrom Graintable?