Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!gem.mps.ohio-state.edu!ginosko!uunet!mcsun!ukc!edcastle!lfcs!nick
From: nick@lfcs.ed.ac.uk (Nick Rothwell)
Newsgroups: comp.sys.mac.programmer
Subject: Using MIDI Manager from ThinkSpeed C. How? Help!
Message-ID: <336@castle.ed.ac.uk>
Date: 7 Sep 89 09:14:28 GMT
Sender: root@castle.ed.ac.uk
Reply-To: nick@lfcs.ed.ac.uk (Nick Rothwell)
Organization: LFCS Enya Admiration Society
Lines: 33

I've just spent an evening trying to get a simple MIDI Manager
application (MIDISignIn, MIDISignOut) going in LightThink C. No luck.
I tried cross-calling some assembly bolted onto the MIDI.a macro file.
I tried in-line assembler in THINK C. I even tried jumping to an array
of integers containing the instructions and the trap. This was the
most successful; I at least got *out* of MIDISignIn, even though I
couldn't go anywhere afterwards. So, what's wrong with something like
this:

	pascal OSErr MIDISignIn(clientID, refCon, icon, name)
	OSType clientID;
	long refCon;
	Handle icon;
	StringPtr name;
	{
	    asm {
		move.l #(((long)midiSignIn<<16) + midiToolNum), D0
		dc.w 0xA800		/* sound manager trap. */
	    }
	}

I have tried all sorts of combinations of literal opcodes and things.
I seem to half get into MIDISignIn, because the generic application
icon appears in the patchbay; next thing I know, I've skidded to a
halt in SetDItem with an odd address trap.
   Somebody out there must have this stuff off the ground..? Please?

		Nick.
--
Nick Rothwell,	Laboratory for Foundations of Computer Science, Edinburgh.
		nick@lfcs.ed.ac.uk    <Atlantic Ocean>!mcvax!ukc!lfcs!nick
~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~ ~~
               Fais que ton reve soit plus long que la nuit.