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Path: utzoo!linus!decvax!mcnc!ncsu!kwf
From: kwf@ncsu.UUCP
Newsgroups: net.micro.cbm
Subject: expansion port question
Message-ID: <2970@ncsu.UUCP>
Date: Wed, 8-Jan-86 15:06:09 EST
Article-I.D.: ncsu.2970
Posted: Wed Jan  8 15:06:09 1986
Date-Received: Fri, 10-Jan-86 06:10:28 EST
Organization: N.C. State University, Raleigh
Lines: 23


I use the FAST LOAD cart. by EPXY (and recommend is highly) on my c64.  It
works well, however, it must be removed for some software packages to run.
I want to install a switch on my c64 which will allow me to prevent the
auto-start of a cart. (like FAST LOAD).  I hope this will reduce the strain on
the expansion port connector.

My question is this: Does anyone know how the c64 determines whether an
auto-start cart. is in the expansion port?

I suspect that it simply checks the GAME and/or EXROM lines.  If so, I should
be able to install a switch that will ground these lines, making the auto-start
cart. invisible to the c64.

If anyone knows, please reply by mail.

thanks in advance.

-- 
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                    Kenneth Fernald
                    decvax!mcnc!ncsu!kwf