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From: shep@datacube.UUCP
Newsgroups: net.music.synth
Subject: Re: MIDI INTERFACE FOR THE MACINTOSH
Message-ID: <22300021@datacube.UUCP>
Date: Sun, 3-Nov-85 11:05:00 EST
Article-I.D.: datacube.22300021
Posted: Sun Nov  3 11:05:00 1985
Date-Received: Fri, 8-Nov-85 21:18:16 EST
References: <257@inuxi.UUCP>
Lines: 14
Nf-ID: #R:inuxi:-25700:datacube:22300021:000:669
Nf-From: datacube!shep    Nov  3 11:05:00 1985


Pickup a copy of "Keyboard" magazine and you'll see ads for dozens of
hardware and software interfaces to the Mac. Doing it yourself is no
big deal either. The Mac's serial ports are easily converted into midi
ports with a few dollars of hardware. This "hardware" is just the
glue to go to/from midi's current loop to/from the Mac's rs422-like
levels. You can jam in an external clock at multiples of the 31.25k
baud rate and tell the Mac to clock on that.

CAVEAT: 31.23k baud could mean a char every 320uS; so interrupts
are your friend!

Shep Siegel                           UUCP: ihnp4!datacube!shep
Datacube Inc.; 4 Dearborn Rd.; Peabody, Ma. 01960; 617-535-6644