[sdiy] learning from early drum machines?

[Dan Snazelle]

OK

i have a goal and it might be crazy.
to make something that generates a beat (with multiple sounds) a primitive drum machine.

now my plan was to check out the early (roland, korg,etc) drum machines from the 70's (maybe before they started using CPU's to make the beat) so i could figure out if the pattern making circuitry is even possible without microprocessers or pics.

i am scared of code so this might be an exercise in stupidity.

i KNOW i can make the circuitry for the drum SOUNDS.
i know that they can be controlled by a trig/gate.

what i dont know how to do is program gates with buttons, that trigger 4 or 5 different sounds at different times (without using 4 or 5 giant 16 step seqs)

ideally an 808 style seq would be great but i KNOW that is way way too advanced. memory would be nice but i have never used memory before

anyway..

any tips on where to find old drum machine schematics?
or even, which models to look into?

thanks guys


right the sky is the limit till i figure out it's too hard) ]]



--------------------------------------------
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http://www.myspace.com/lossnyc  


http://www.soundclick.com/lossnyc.htm


http://www.indie911.com/dan-snazelle
(or for techno) http://www.myspace.com/snazelle