[sdiy] MIDI spec

[Seb Francis]

Ingo Debus wrote:

> Seb Francis wrote:
> > BTW, my Sequential Circuits Six Trak has a lot of problems with too much MIDI data, and this uses a Z80 processor (not sure of the speed .. maybe 4MHz?) - but perhaps this was just bad programming on the part of SC..
>
> I found that I can swamp *any* MIDI receiving device when I program a
> simple CV to MIDI converter: just read the ADC and output the data as
> MIDI CC in an endless loop. It needs at least a few milliseconds delay
> in the loop to work properly.
>
> The receiving devices I tried include my Mac running Logic or
> SoundDiver, and my Roland S-760 in MIDI monitor mode.
>

This sounds strange .. consider a big SysEx dump - this can be a really long continuous stream of data (in my old Akai S950 you can dump whole samples over MIDI) .. surely SoundDiver and Logic are able to cope with this (although in my experience not all MIDI interfaces can).  Perhaps the S-760 has problems in MIDI monitor mode because of the update time of the display though?

I guess with a synth it also greatly depends on what the software actually has to do to handle each CC message.  Did you try sending them on a channel which is not mapped to any voice for example?

Seb