VIC-20 "all games in one" cartridge update

From: Marko Mäkelä (
Date: 2001-03-30 12:52:29

[Re: previuos posting on B&W C64: Nick, I said "Nicolas", not "Nicholas". :-)
But you made a good point anyway; I didn't consider the possibility of a
3rd party modification.]

I've now almost designed the printed circuit board for the VIC-20 memory
cartridge.  It'll have 4 chips on the top side: Am29LV160D (2MB Flash
ROM), HM62256B (32kB SRAM), 74LVX245 (data bus buffer), and Lattice 2032
programmable logic chip.  On the bottom side there are only two 74LVX245
chips that buffer the address lines.

The 3.3 volt regulator and the programming interface for the Lattice 2032
are missing, but I hope my friend will be able to fill these gaps soon.
There are 31 holes on the board now.

My question is: how many people would be interested in this cartridge, and
how many have the skills and equipment to (a) manufacture, and (b)
assemble the printed circuit board?  This will be a freeware product, but
since I think that SMD chips and boards are difficult to handle without
expensive equipment, it would be good to have the boards professionally
produced somewhere.  If someone knows a cheap place for doing this (I
think etching, drilling and coating with the "green paint" that resists
solder would be enough), I would like to know.  My friend has access to
some equipment, but it is not suitable for producing more than, say, 5
prototype boards.


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