mike@thumper.UUCP (09/24/87)
Just a short recommendation for the Macintosh MIDI interface driver
available for $20 (plus $3 handling) from Opcode Systems. The driver
provides two calls, one that sends a byte out the MIDI port and one
that reads a byte from it; both use queues and are interrupt-driven so
they shouldn't have any problems with dropping characters. The single
floppy contains three versions in C (for the Lightspeed, Consulair, and
Aztec compilers, though I've only tried the Lightspeed version) and one
in assembler. The software also handles multiple clock rates found in
different MIDI interfaces, though I've only tried it with my Opcode
box.
It appears that it's also possible to drive two interfaces, once on the
printer port and one on the modem port, simultaneously.
This is an absolutely painless way to get a MIDI program going; less
than an hour out of the box, my Mac was playing polyphonic Bach.
Opcode's address is:
Opcode Systems
444 Ramona Street
Palo Alto, CA 94301
(415) 321-8977
I have no connection with Opcode other than as a satisfied customer.
Mike Caplinger
mike@bellcore.com
{decvax,ihnp4}!thumper!mike