[A6] sysex editing

[The Dope Robot]

I was working late last night on editing the A6 using sysex messages (12 bytes,
opcode 0E), and decided to work on a little programming project to test sysex
editing out from my hardware sequencer. My goal was to load the default program
and through sysex messages disable all the stuff that i didn't want enabled,
such as OSC and Filt mods, ENV 1 levels, etc. In essence I was trying to turn
off as many front-panel LED's on the default program as possible. i started by
programming in the values listed in the sysex document (turn on OSC2 mod1,
setting filter 1 offset to -0.02), which worked fine, but i had to send the
values to MIDI-OX and use those values to program the sysex values for the
hardware sequencer. first of all, here is the sysex form i was using, from the
A6 sysex document:
F0 00 00 0E 1D 0E <parent page><child ID><data2><data1><data0> F7

and here are my questions and observations:
1. MIDI-OX shows only four values, which i think correspond to <parent page>,
<child id>, <data2>, <data0>. Where is the fifth value? does the answer have
something to do with the A6's byte-packing? and how do i figure out or find
this fifth value?
2. I can't make sense of the A6 sysex document. I did find out some of the
parent page ID's (OSC1 = 0F, OSC2 = 10, prefilter mixer = 11, filter1 = 12,
filter2 = 13), but I can't find these in the document, nor could i extrapolate
the values i needed from the sysex and nrpn parameter chart at the end of the
document. can anyone help?
3.certain actions like disabling the view/trig LED on the LFOs, SEQ, and
ARP--turning enable off--were not very reliable or predictable. sometimes it
worked, sometimes it didn't. i staggered the sysex sends to every 16th note,
because i assume the A6 wouldn't like to receive a whole bunch of sysex
messages at once. sending these also tended to lock up the A6.

Any help or advice would be greatly appreciated. thanks!
JC



 

=====
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*- 

                   J.C. Jordan
         http://www.doperobot.com/ 

-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free web site building tool. Try it!
http://webhosting.yahoo.com/ps/sb/