Just...wow...that is all that I can say. This is possibly the best "drum machine" that I have ever used.
I am into this and Doggiebox. Now, Doggiebox I use because it is simple. I mean, totally simple. Start it up and go. Archibald is NOT simple. At least, not at first. It gets easier quickly, but you kinda have to relearn how to do things for the first few times. But once you've gotten everything down in your head, it's powerful.
The reason that it can be confusing and intimidating at first - it has 3 different properties with value ranges from 0% to 100% (2 for the bass drum). There is just so much variability and yet you have control over the chance occurances.
Your Controls are over - Probability of striking, Velocity range for the strike, and attack range for where the strike hits.
Kick drum - just the one
Hi-hat - Foot pedal, Open, and Closed
Snare - Snare hit, Rim shot
Cymbals - Ride, crash
Toms - Hi, low
Play one bar (the one you're working on) or play the entire set. You can loop or not loop up to 64 bars. You can also easily change the amount of beats per bar.
It works with ReWire, so if you have a ReWire compatible program, it works. However, it doesn't seem to work with Garageband's ReWire support (yes, Garageband does have ReWire support. Yayness!). Hopefully, that will be fixed sometime in the near future. Also, hopefully this will be made into a UBin.
I would have GLADLY paid the 36 USD that it was worth before had I known about it. This is just a brilliant piece of programming, and I highly recommend it to anyone.