Re: Apple MIDI interface kit.

[irsman@parka.winternet.com (Ian Schmidt)]

In article <2453987229.5009438@adbbs.antioch.edu>,
John L. Graham <John_L._Graham@adbbs.antioch.edu> wrote:
>I borrowed an Apple MIDI interface kit from my brother, and I was
>wondering...is there anything in it? It looks like just a cable box for tying
>the two I/O cables from the MIDI keyboard to the serial port on the GS. If
>that's the case I'm tempted to trace the pins in the junction box and make
>one myself. Anyone know if that would work?

Yes, there are some optoisolators and a crystal oscillator which clocks
the GS or Mac's serial chip to the correct rate, as well as providing clean
interfacing since MIDI is current loop based rather than the more 
conventional signalling schemes normally used by serial ports.



--
Ian Schmidt - irsman@winternet.com - http://www.winternet.com/~irsman/
    "Where would I be without IBM?" - P. Robb, Information Society