Computer-controlled musical equipment

Gordon JC Pearce gordon at gjcp.net
Thu Aug 11 11:26:28 CDT 2005


John Foust wrote:

> Very little glue is needed to support MIDI if a computer's
> UART can handle the speed.

The problem is that even if your UART can (it's only 31250 baud) then 
there is no ratio that divides cleanly to give that and other "normal" 
ratios.

I made a MIDI card for the PC by replacing the clock generator with one 
that *did* divide correctly, and subsequently made another that does 
62500 baud for the internal comms bus in my ESQ-1, when the screen 
broke.  The software to interpret the control codes was a whole other 
story though...

Gordon.


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