On 02/25/2014 03:21 PM, Groepaz wrote: > On Tuesday 25 February 2014, you wrote: >> On 2/24/2014 10:04 PM, Groepaz wrote: >>> 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 :) >> >> So, Bank 1/3 doesn't work? I thought in those banks, charrom is gone... > > err yes. thats why i said "the VIC does never see chargen". that obviously > means it is always gone, in all banks. that gives additional 8k of memory to > use for gfx. Of course, you have to make sure that VIC sees the Char-ROM at power on, otherwise using the C64 will become complicated. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2014-02-25 17:00:06
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