[sdiy] building a PPG EVU MIDI interface

[mark verbos]

Unicorn ELectronics has 6850 for $1.99

They don't have the PC900, but I doubt that is a critical part. Look  
at some other MIDI input schematics. I think a 6N138 would work fine.
They have those for 59¢.

Mark




On Dec 8, 2008, at 2:19 PM, Todd Sines wrote:

> hello everyone,
>
> Slowly getting the courage to try this.
>
> I have the new Virtual Music v8.3 OS EPROMs but need to get some  
> parts from Hermann's list.
> http://www.hermannseib.com/english/synths/ppg/midiretro.htm
>
> 4 IC sockets DIL 2x14 17,7mm
> 1 IC socket DIL 2x12 17,7mm
> 2 IC sockets DIL 2x7 10,1mm
> 1 IC socket DIL 2x4 10,1mm
> (actually, a socket with 2x3 pins would be needed for the PC900,  
> but I couldn't find one)
> 1 6850 ACIA
> 1 optocoupler PC900
> 1 quartz 2.000MHz
>
> [pedestrian diodes & capacitors omitted]
>
> Main question, would like to find a US source for the 6805 ACIA &  
> PC 900.
>
> Any ideas?
>
>
>
> +odd
>
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