Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!uw-beaver!cornell!johnhlee
From: johnhlee@svax.cs.cornell.edu (Johnny H. Lee)
Newsgroups: comp.sys.amiga
Subject: Re: AUDIO IN ???
Message-ID: <45585@cornell.UUCP>
Date: 10 Sep 90 16:16:42 GMT
References: <29696@nigel.ee.udel.edu>
Sender: nobody@cornell.UUCP
Reply-To: johnhlee@cs.cornell.edu (Johnny H. Lee)
Organization: Cornell Univ. CS Dept, Ithaca NY
Lines: 31

In article <29696@nigel.ee.udel.edu> NJ_GOKEM%FANDM.BITNET@pucc.princeton.edu writes:
[...]
)Now, I am incredibly lazy, and I don't want to switch cables, and I like
)to listen to MTV orso while playing with the computer etc.
)...]
)Does anyone know, if I can hook up any line-output sound-device to the AUDIO
)IN? Or does it need to be something else?
[...]
)Can I just hook up the VCR to this AUDI pin on the serial port, or is than
)a very big NONO!
)
)Thanks a lot!   Nils Gokemeijer (NJ_GOKEM@FANDM)
)                                (NJ_GOKEMEIJE@FANDM.bitnet)

According to the new blue-cover _Amiga Hardware Reference Manual_ from
Addison-Wesley, the AUDIO IN pin is an analog audio input whose signal
is mixed in with the output of the right channel audio from the Amiga.
It is intended for use by a modem so that the modem's line-monitoring
sound can be mixed and heard with the Amiga audio.  The AUDIO IN is
not used nor can it even be examined by the CPU.

The jist of all this is that it seems you can do exactly what you want.
Now as for the line levels, I have no idea.  Watch out for ground loops
and different ground voltages.  Of course, you use this information at
your own risk.  You take responsibility for blowing up your computer,
and I'll take responsibility for blowing up mine.  :-)

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The DiskDoctor threatens the crew!  Next time on AmigaDos: The Next Generation.
	John Lee		Internet: johnhlee@cs.cornell.edu
The above opinions of those of the user, and not of this machine.