Re: Dating a C-64 board

From: Sam Laur (
Date: 1999-04-21 07:15:36

> The picture is slightly blurred, but I can make out the National
> Semiconductor logo just below the Commodore logo.  I checked their web
> site, but could not find any information that applied to this chip.

You're right it is blurred, because what looks like the curly N, is actually
"25" ... so here's a picture, bigger but with better resolution hopefully : (47k)

> It looks as though 251064 is a valid part number for the early '80s.

So, the mystery continues. I probably should somehow obtain a dump of its
outputs, but currently I don't have the hardware to do that.

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