Re: final cartridge for vic 20

From: Marko Mäkelä <>
Date: Sat, 11 Jul 2015 09:56:37 +0300
Message-ID: <20150711065637.GA5284@x220>
On Sat, Jul 11, 2015 at 08:02:01AM +0200, didier derny wrote:
>I'll probably end with a small board plugged on the 6502 socket with 
>6502 + gal + ram to implement only the ram and let the cartridge 
>connector free

The 6502 socket sounds like a reasonable approach. Maybe add a small 
5-volt Flash ROM for some auto-start firmware, to save typing when 
loading software. The software would be loaded from some external 
source, such as the SD2IEC. Basically, a simple loader would load an 
image file to the appropriate RAM banks. Compression is not really 

Some years ago, I finished the Vic Flash Plugin that was under 
development for the best part of this millennium:

The Vic Flash Plugin cartridge uses the 5-volt Flash chip Am29F032B 
which probably is big enough (4MiB) to host all Vic-20 software ever 
written. It was difficult to obtain even back then. The hardware was 
never sold.


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Received on 2015-07-11 07:00:44

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