SV: TB-303 original power supply - Answerfrom author

[Dan Gendreau]

> Regarding the sequencer - just a reminder that the TB303's custom
> microcontroller is no longer available, not even from Roland and therefore
> it will not be possible to clone the sequencer exactly. New firmware will
> have to be written for a modern device, eg PIC / Atmel. Since you mention
> the memory circuit, I presume you are intending to clone the sequencer.

Speaking of which, I have a TB303. If anyone is interested, when I get some
free time I can punch in some test sequences and use an oscilloscope to
capture the resulting DIN Clock, CV, Gate, Slide and Accent waveforms.

That should make it very simple for anyone to recreate the timing of the
original TB303. If I recall correctly, the Accent and Slide signals have odd
timing characteristics.

-Dan G.