Hi Clae,

I am trying to put my first MIDIbox together, I just need to tweak my PIC programmer and
get the bootloader on these chips. Yes, MIOS is a very cool platform for instruments.

But my interest in the 707 is separate from this. I value being able to salvage old gear and
change only just as much as I need to. Even building my own sequencers, it'd be elegant to
just patch a few lines of code and pop the updated ROM in my 707. As is, the 707
hardware is excellent. For example, the 626 is a similar machine - how about seeing how
it sends MIDI in "write" mode, and patching this over the 707s routine Little tweaks like
this which are already 99% done as they are.

Thanks for the good advice!
CJ

--- In tr-707@yahoogroups.com , clae <clae13@...> wrote:
>
> 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
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
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