Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!antares!dcfs018
From: dcfs018@antares.Concordia.ca ( STEPHAN BOHM )
Newsgroups: comp.sys.atari.8bit
Subject: Re: 130XE circuit
Summary: The answer
Message-ID: <1916@clyde.concordia.ca>
Date: 12 Mar 90 05:10:39 GMT
References: <3302@trantor.harris-atd.com>
Sender: news@clyde.concordia.ca
Reply-To: dcfs018@antares.Concordia.CA
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Organization: Concordia University, Montreal Quebec
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In article <3302@trantor.harris-atd.com> mlaprade@x102a.ess.harris.com (laprade maria 42641) writes:
>Hi,
>From: mlaprade@x102a.harris-atd.com (laprade maria 42641)
>Path: x102a!mlaprade
>
>I'm looking for someone that has looked into the circuitry for the 130XE as
>well as the Atari 800. I have a circuit card that plugs into the 800 that
>makes use of the $D5XX SLCT line on pin 15 of the cartridge slot. I now want to
>use it on the 130XE. The other signals to the cartridge are the same, but
>the 130XE does not have a $D5XX line. I don't have any schematics, does
>someone know where I can jumper that line or know where a similar line is?
>
>Thanks

You may find the $D5xx signal on pin 15 of the 130XE's cartridge slot, just
like on every 8-bit.  It is often called CCTL in the Atari literature (for
Cart Control), and it is an active low output of a 74LS138 IC.  By the way,
if the 130XE didn't have this signal, Action!, Basic XE/XL, Bounty Bob Strikes
Back, and other 'supercartridges' would no longer work.

                                             Jean Goulet
                                             Electrical Engineering
                                             Class of '89
                                             Concordia University
                                             Montreal, Canada