Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!pasteur!ucbvax!UMDD.BITNET!BBOURBIN
From: BBOURBIN@UMDD.BITNET (Brett S Bourbin)
Newsgroups: comp.sys.amiga
Subject: assembly use of gameport.device
Message-ID: <8802160312.AA22247@jade.berkeley.edu>
Date: 16 Feb 88 03:05:35 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 24

Does anyone out there have any good examples of using and setting up the
gameport devices in assembly language?  I have been trying to use the ones
in the ROM KM but it seems to use heavy "C" support.

I also wrote some code ( with some help from Kodiak's example ) in assembly
to release port 0 from intuitions control, so I can use that port for my
mouse control.

Last question:  What is the difference between using a:

                   DoIo( IO_Message) ;

or using :

                   SendIO( IO_Message ) ;
                   WaitPort( MsgPort );
                   GetMsg( MsgPort );

I thought that the only difference between DoIO and SendIO is that SendIO
returns right away?  If this is true than the two examples should do the
same thing.  Why would they use the 3 system commands instead of using
DoIO?  Am I missing something here?

- Brett Bourbin                BITNET: bbourbin@umdd