[cc65] Extended memory

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From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2002-11-20 17:35:02


On Wed, Nov 20, 2002 at 04:42:43PM +0100, MagerValp wrote:
> Please change the subject as this doesn't have anything to do with my
> SuperRAM code.

Sorry, you're right, I should have done that.

> But it's not very hard to run code with the ROMs swapped out, and a
> small stub handling irqs kernal calls. I managed to get Ultima IV
> booting on the Plus/4 this way. If I supply you with the code, could
> you add that to the Plus/4 runtime? This way you can use the ram as
> real ram.

Of course! This would be really great! I never liked the fact that cc65 wastes
32K of memory on the the Plus/4. If this does really work, a eternal place in
the cc65 hall of fame will be yours:-)

> UvB> Are there any other known memory expansions out there, that do
> UvB> not map into this scheme?
>
> Marko Mäkelä's 256 kB expansion. There are similar hacks for the
> Plus/4.

Why do you think these cannot be handled by copying data to and from a 256
buffer in the execution bank?

Regards


        Uz


-- 
Ullrich von Bassewitz                                  uz_at_musoftware.de
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