If you're looking to start from scratch, you should check out the MIDIbox SEQ at ucapps.de and the forums and wiki at midibox.org. MIDIbox is an open source software and modular open hardware, community-built platform for custom MIDI projects based on PIC microcontrollers. It includes MIOS, the MIDI Operating System in PIC assembly, a C wrapper, Java based tools, pre-etched boards and full kits for a range of existing projects which you'll see in the sidebar at ucapps.de.

In the forums there are active threads on analogue drum synths and customising the SEQ to suit. The SEQ as it stands is a very
powerful, responsive and adaptable hardware sequencer. If you do decide to write your own code, MIOS, the hardware and the
forum community will give you a leg up.

You can also find video demos by searching for MIDIbox on youtube.

Clae.


----- Original Message ----
From: acousmatique < acousmatique@... >
To: tr-707@yahoogroups.com
Sent: Saturday, 17 February, 2007 7:54:05 PM
Subject: [tr-707] Firmware, 6303 coding info

I know, we at times speculate about the 707 firmware and our mental wish-list starts. The
code itself is if I recall on one of those SRAM ICs, which could hopefully be removed and
dumped without much fuss. That's likely the easy part!

I have messed around with digital gear which I've found, but I have never coded anything
substantial of my own. So I am extremely noob to even many of the basic concepts. Still, I
am interested and happy to apply myself when mods to my 707 are concerned. I look
around online and I see articles and tutorials on many different microcontrollers. And
searching for books I find many written for even some of the more obscure MCUs. But
nothing for the 6303 apart from the datasheet! So right from the start this is not an easy
machine for a casual end-user to hack into the code of, it's better for somebody with
embedded coding chops.

Unless I find more 6303 info, I'll probably be better off using a different processor. Since I
am making completely different voice circuitry for my 707, this basically equates to just
making my own drum machine from scratch. Not an either/or thing for me though.
Building my oiwn will happen someday but my 707 will still be here, with me wondering
about it.

More obscure Roland MCU antics Same deal goes for my Juno106! It uses a upd7810
processor, but of course I can't find any info on those either. Guess I am out of my league
here, but I thought I'd just ponder out loud and see if anybody might point me to some
more info on coding for these things.

CJ




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