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From: mek4_ltd@uhura.cc.rochester.edu (Mark Kern)
Newsgroups: comp.music
Subject: MIDI
Message-ID: <4618@ur-cc.UUCP>
Date: 21 Dec 89 17:54:50 GMT
Reply-To: mek4_ltd@uhura.cc.rochester.edu (Mark Kern)
Organization: University of Rochester
Lines: 24

Hi,
   I need to write a program for my Apple IIGS that will read in generic SysEx
messages and save/load them to/from a disk. I have the expanded version of the
IMA MIDI 1.0 specs, and the MIDI implementation sheets for the Juno 2 and the
Roland S-10.
   I had thought that the SysEx messages dumped by MIDI instruments came in one
large packet, but the Roland implementation sheets use a handshaking system to
pass SysEx in organized packets. Since I had seen generic SysEx programs of the
type I wish to write, I became confused. How do the SysEx programs know which
handshaking system to use? The IMA 1.0 specs did not mention any standard
methods of handshaking, but the Roland specs give the SysEx format and the
operation codes for 'Want Send File', 'Acknowledge', etc. How can I make my
program handle a wide variety of synths then?
   I suspect I may be missing some additional specs on SysEx transfers. If
you have written a MIDI program, or have any insights on my problem, could
you please point me out to the information and/or source code that I may
need? Thank you very much for your time. This means a lot to me.

                                                Mark E. Kern
-- 
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   Mark Edward Kern, mek4_ltd@uhura.cc.rochester.edu  A.Online: Markus
      Quagmire Studios U.S.A. "We not only hear you, we feel you !"
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