From: Geoff Oltmans (
Date: 1998-09-18 02:39:10

Richard Atkinson wrote:
> Alright, here's a real hackers' question: does anyone know what the
> unconnected /CAS lines in the first version of the C64E ASIC do?
> (251715-01) It's reminiscent of the lines on the C128's MMU, but of course
> the 64 doesn't have _proper_ bank switching, C128 or plus/4 style :-)
> I'll put my trusty oscilloscope to them next week, I just wondered if
> anyone else had done this.

Huh... maybe Commodore had plans to remove the RAM refresh stuff from
the VIC-II and just use the ASIC. That's very interesting.

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