Bc2000 (for the BCF2000 & BCR2000)

Some great ideas!!

I reckon it would also be cool if we could create the ability to hold
down a button and then click another button - sending an entirely new
midi message.

Karl


On Tue, Feb 26, 2008 at 9:05 AM, Dan Gendreau <gendreau@...> wrote:
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> Just a quick note about custom firmware efforts.
>  I have been making some small steps toward decoding it.
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>  The firmware flash memory is 512kb in size, split into 2 banks of
>  256kb. When you update the firmware via sysex, it writes to the bank
>  that is currently not in use and switches banks on reboot.
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>  The good news is that the current BC2000 firmware only uses 68-72kb of
>  the 256kb available for a firmware, so there is quite a lot of room
>  for custom code in there.
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>  There seems to be a boot-loader in the first 4kb of each bank that
>  never changes. Based on their FAQ, I suspect that this boot-loader is
>  capable of accepting a sysex firmware update via the MIDI-In port even
>  if the main firmware and USB code is corrupted. This means it should
>  be possible to experiment with writing a custom firmware without
>  completely bricking your BC2000.
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>  My first short term goal is to decompile the 4kb boot-loader and
>  figure out how it decodes midi firmware update packets. I am currently
>  writing my own windows ARM disassembler for this purpose. Once I
>  figure out the sysex firmware encoding, I will make my disassembler
>  and a sysex decoder available so others can work on the firmware as well.
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>  I have several ideas that could improve the BC2000 UI significantly
>  once we get deeper into the firmware:
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>  1) A new LED display driver that uses Bit-Angle modulation to add 2 or
>  4-bits of brightness per LED would be nice:
>  http://www.artisticlicence.com/app%20notes/appnote011.pdf
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>  2) Add more display modes for the lower encoder rings
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>  3) Make the Encoder Group buttons apply to more controls than just the
>  top 8 encoders.
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>  4) New LED ring display modes that can show information from 2
>  controllers, like filter frequency(dot position) and resonance (dot
>  width) or the way some of the Nordlead LED rings work (showing
>  default/current values).
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>  -Dan G.
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