Re: More CPLD explorations

From: Groepaz <>
Date: Tue, 25 Feb 2014 05:04:30 +0100
Message-Id: <>
On Tuesday 25 February 2014, you wrote:
> This time, it's PLA replacements.
> After fitting, the C64 PLA equations take only a nominal portion of the
> xc9536(xl) space I stuffed them into.  And, none of the 36 registers are
> used.
> I know SuperPLA put a bunch of equations in the unit, for different
> products, but I was wondering...
> Are there any memory mappings that would have been nice to have via the
> PLA, but are not available?  (external KERNAL at $e000, for instance?)
> Yes, I understand compatibility and all that.  But, if you had a
> switchable PLA, what new modes would be of interest? (are there any?)

maybe one where the VIC does never see chargen (but always RAM instead)? that 
would be very nice for graphic effects :)


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in Deinem Leben irgendwann mal lernen.

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Received on 2014-02-25 05:00:03

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