I was mainly thinking of the bass, which is simply a big fat sine wave with a lowpass, and then a short clicking noise at the start, which is basically just a sine as well.

You can replicate it well enough with just those two elements anyway.

The snare is just some white noise and a highpassed sinewave.

The bell definitely sounds like it has ring modulation. I seem to remember the cowbell being the hardest one to rip off. The toms were tricky as well.

On the other hand, my fake 808 had a dub siren built in, a tape delay, overdrive and it could do triplet beats. It was awesome. That whole lab class was most amusing.