The VL Control Surface was developed using a Yamaha QY100 XG synth/sequencer/rhythm box.? I programmed the QY100 to accept 3-, 4- and 5-note chords on notes C1-F2 on channel 4.? As well as XG system exclusive, whose parameters were given as words rather than numbers, I could also insert non-XG system exclusive such as VL part data (F0 43 10 4C 09 xx xx nn F7). The QY100 also had an extra effects section with Overdrive, Distortion and Amp Simulator, but I did not try using this as if it were the VL70m distortion block (F0 43 10 4C 03 xx xx nn F7).? The results are evident in vldemo.mid .
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