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Help with building Roland MC-808 .ini file

Help with building Roland MC-808 .ini file

2014-12-06 by njeremic@...

Hi group

im in the work of building a definition file (.ini) for Roland MC-808. I just uploaded the first version to the files area, so other can use it.

But i need help with defining a sysex string for values bigger than 127...

example that works in my ini file:

11 00 20 00 | 00 - 7F | val ; Tone 1 Level(0 - 127)

now looking at the roland documentation, im trying to change the waveform of tone 1 and its value is 0-662, and sysex string has to be longer

;11 00 20 2C 00 00 00 | 00 - 7F | val ; Tone 1 Wave (0 - 622) - does not realy work

but this changes only the 1st 16 waveforms - so just last byte u guess but i need to change the other bytes as well - and im stuck :(

can i program somehow 1 knob from 0-662 and send it to my 808?

can somebody please point me how to do this?

i uploaded the midi implementation chart also in the folder, on page 12 there is Wave Number L (Mono) - so this one i need.

thanx a lots

niko

Re: Help with building Roland MC-808 .ini file

2014-12-07 by markwinvdb@...

The Wave Number parameter is sent via four data bytes (each byte containing 4 bits of the parameter).

So the line in the ini file should be something like:
11 00 20 2C | 00 00 - 7F 7F | val0.3 val4.7 val8.11 val12.13
(Maybe the order of the 4 "val..." should be reversed; I can't see from the MC-808's SysEx implementation which order is correct.)

Unfortunately the BCF and BCR work with 14-bit values, i.e. the max. range is 0-16383, whereas the Wave Number parameter uses 0-16384, so you won't be able to select the very highest wave number (at least not this way)...

Hope this helps,
Mark.

Re: Help with building Roland MC-808 .ini file

2014-12-07 by njeremic@...

Thanx Mark
i figured it out :) - yes the order should be reversed
11 00 20 2C | 00 00 - 7F 7F | val12.13 val8.11 val4.7 val0.3
and it works like a charm.
no problem about the range, there are only 662 waveforms, so upper numbers are ignored

finaly i can use this great groovebox without a computer editor
ill update the .ini file soon
best & thanx again
niko

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