8 Mb CHIP RAM on All Amigas

[Doobrey]

leirbag28 wrote:

Someone here said even with a Gfx card the limit is only 2mb Chip.................hmmmm Im pretty sure I have read you can have 4mb with a CyberVision64 or Picasso and having a Gfx card benefits the Video Toaster as it uses the extra chipMEM from the Card to run.

Gfx card memory is not chip memory, it can't be accessed by the custom chips.

[Doobrey]

whiteb wrote:

I cannot see that is ISNT possible, talking about Minimig, if someone was to give Dennis the specifications so he can apply them to the Agnus section of the Minimig core.

IMHO,the big problem will be compatibility with existing hardware.
The way UAE adds 8Mb of chip mem is to simply add another 6Mb at $200000(plus associated address decoding).
 But this memory range is already reserved for other things like the PCMCIA slot on the A1200/600 and ZorroII memory boards, and there's really no other place it can be added inside the 24bit address range.
 And you're stuck with a max of 2Mb fast mem if you're using a 68000 or 68ec020..plus you'd have to hack expansion.library to stop it configuring any boards into the 'new' chip mem area.