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From: cs161fhn@sdcc10.ucsd.edu (Dennis Lou)
Newsgroups: rec.music.synth,comp.sys.ibm.pc.hardware,sci.electronics
Subject: MIDI
Message-ID: <14112@sdcc6.ucsd.edu>
Date: 12 Nov 90 09:08:09 GMT
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On my room mate's Amiga, he plugs a little box into his serial port
and voila! he's got MIDI in, out, and thru.  Looking at the
schematic, the box consists of a hex inverter and an optoisolator.
On the RS-232 end, it only uses pins 2,3,7 and a +5V line (which is
routed through 19 or 21).

Why can't you do this on an IBM?  What does the Roland MPU-401 
have that a modified serial interface doesn't?  What does the 
Amiga serial interface have that the IBM's doesn't?  Can you 
roll your own sequencer/notation package using the serial port adapter?

(please, let's not start a processor/architecture war here :-)

-- 
Dennis Lou               | "But Yossarian, what if everyone thought that way?"
dlou@ucsd.edu            | "Then I'd be crazy to think any other way!"
[backbone]!ucsd!dlou     +----------------------------------------------------
dlou@ucsd.BITNET cs161fhn@sdcc10.ucsd.edu        | Woz went to my high school.