Re: Additional cartridge ROM question

Re: Additional cartridge ROM question

From: Marko Mäkelä <>
Date: Mon, 30 Mar 2009 11:34:14 +0300
Message-ID: <20090330083413.GA4541@x60s>
On Mon, Mar 30, 2009 at 02:13:34AM -0500, Jim Brain wrote:
> If EXROM and GAME are general purpose outputs in C128 mode, does that  
> mean that the cartridge must fully decode the LO ($8000) and HI ($c000)  
> bank memory addresses for any cartridge, or does the C128 drive EXROM  
> low for LO and GAME low for HI banks?

Sorry, I don't know, I have never played with C128 cartridges.  Please
figure it out yourself and report your findings.  The EXROM and GAME
lines are controlled by MMU registers.

Also sorry for this delay, but I was without Internet access for 4 days
and 3 hours.  My subscriber cable was cut by road construction workers,
and WLAN didn't quite work from across the street (from an unaffected
neighbour).  To make matters worse, I'm working from home. :-(


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Received on 2009-03-30 10:44:06

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