Re: Eagle CAD design and fabrication of C64 & Plus4 cartridges

From: smf <smf_at_null.net>
Date: Fri, 9 Dec 2016 12:22:15 +0000
Message-ID: <c4220986-152f-087d-73ef-1cfeba5f5adb@null.net>
On 09/12/2016 07:16, Jim Brain wrote:
> Designing a soft-banking solution requires at least 2 ICs (a latch to 
> hold the bank and something to combine IO1, R/W, and Phi2), should be 
> 3 (the C128 really needs the dual FF clock fixer circuit that Skoe and 
> Martin Hoffmann-Vetter designed), and that started to sound like work...

Could you do bank switching with a single registered pal/gal?  I can't 
find anything about the dual FF clock fixer.

Would your design also allow you to make a c128 native cartridge?

http://blog.worldofjani.com/?p=1600

The difference seems to be 16k instead of 8k for ROML/ROMH and no 
game/exrom jumper.


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Received on 2016-12-09 13:00:02

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