Bc2000 (for the BCF2000 & BCR2000)

--- In bc2000@yahoogroups.com, "moroeat" <moroe@...> wrote:
> The gate time can be adjusted from 1 to 1600
> 
> I have monitored the output of the dx200 editor with midiox and
> noticed that the dx200 editor sends 2 sysex strings per value (for the
> gate time):
> 
> F0 43 10 62 10 40 26 val F7    9bytes        
> counts from 00 to 7F and restarts then with 00.
> 
> F0 43 10 62 10 40 46 val F7    9bytes       
> At start the value stands on 00 and counts one value up (up to 07)
> every time after the first sysex string restarts at 00.
> 
> Is it possible to realise this with one knob of the bcr2000 ?
> If yes, how can i do this ?
> 
> Please forgive my bad english
> Answers in german would be preferred - but also in english :-)

Mein Deutsch ist nicht mehr was es einst gewesen ist, en
waarschijnlijk heb je wat moeite met mijn Nederlands, so I'll stick to
English, also for the benefit of other people in the group...

First of all I must say that I don't fully understand the protocol
used by the DX200:

From your description of the DX200's output, I would think that the 
DX200's first message sends the "low" byte (LSB) (from 0 to 127) and
the second message the "high" byte (MSB) (from 0 to 7). The total gate
time should then be calculated as LSB + 128*MSB. However, that doesn't
quite seem to fit the fact that the second value is maximally 7,
because 7*128 is only 896, so I can't immediately see how that would
map to 1600.

However, if we assume that the encoding DOES work as LSB + MSB, you
can assign the two messages to a single encoder via two ".tx" messages 
("custom output lines" in BC Manager's terminology):

.tx $F0 $43 $10 $62 $10 $40 $26 val0.6 $F7
.tx $F0 $43 $10 $62 $10 $40 $46 val7.13 $F7

(You COULD put both MIDI messages in ONE ".tx" line, but then the BCR 
would output additional, nonsensical MIDI data, so you'd better avoid
that.)

See "BC MIDI Implementation.pdf" for further details. (In particular, 
see the "Data Specifier" section.)

Mark.