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Article #2844

TTY33 and KIM1

#2844
From: Ron Watkins
Date: Mon, 13 Apr 1992 23:54
19 lines
1615 bytes
I just picked up an old ASR33 teletype from the U of Arizona bid-sale. I
would like to interface this with my KIM-1 6502 processor. What I don't have
is any knowledge of the interface. I know it uses 20ma current loop. But
I also know that I need to install a TTY-KB switch on the KIM bus, but I
don't know which two pins need to be put on a switch. I also took a look
inside the tty and found that the wiring diagram for the KIM to TTY seems
to be using different pin numbers than I have on my tty. They told me to
hook wires from the KIM to the TTY using terminal block X (which I can't
seem to find) or to P2 pin locations identified by number. My pins on my
p2 are identified by alphabetic letters not numbers.
If anyone knows the pinout of the TTY or the switch location for TTY-KB
on the KIM, please e-mail me a note.
Thanks,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ron Watkins	[ron@argus.lpl.arizona.edu] /		  _____	     /
931 Gould-Simpson bldg.			   /		 /    /	    /
University of Arizona			  /		/____/	   /
Tucson, AZ. 85712			 /	       /	  /
(602) 621-8606				/_____ unar & / lanetary /_____ ab.
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Message-ID: <1992Apr13.235456.2291@salado.rc.arizona.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!asuvax!ncar!noao!amethyst!salado!argus.lpl.Arizona.EDU!ron

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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!asuvax!ncar!noao!amethyst!salado!argus.lpl.Arizona.EDU!ron
From: ron@argus.lpl.Arizona.EDU (Ron Watkins)
Newsgroups: sci.electronics,rec.radio.amature
Subject: TTY33 and KIM1
Keywords: tty33 teletype kim-1
Message-ID: <1992Apr13.235456.2291@salado.rc.arizona.edu>
Date: 13 Apr 92 23:54:56 GMT
Sender: ron@argus.lpl.arizona.edu
Distribution: usa
Organization: Lunar and Planetary Lab, U of AZ
Lines: 19