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Re: Issue 3 16k internal RAM mod

Posted: Wed Jul 26, 2017 8:52 am
by sirmorris
Pokemon made a RAM expansion which altered one of the first instructions of the ROM to start counting mem at +32k. It was genius. Making it count less (i.e. 1k) would be harder as you'd need to affect multiple bits IIUIC.

If you have an internal RAM, why not swap the ROM out - then you're in control of how the mem check works. You could have multiple images and a switch. I guess we're veering off into ├╝berzeddy territory now, though.

Re: Issue 3 16k internal RAM mod

Posted: Wed Jul 26, 2017 4:37 pm
by Lardo Boffin
Certainly somewhat beyond my abilities! :shock:

Re: Issue 3 16k internal RAM mod

Posted: Thu Jul 27, 2017 1:01 am
by gammaray
Here, Here!
If you have an internal RAM, why not swap the ROM out - then you're in control of how the mem check works. You could have multiple images and a switch.
As I have always said make modifications that are switchable to stock operation if they are not otherwise transparent.

Just sayin'

Upon closer look, I guess you meant switching ROMs not disabling mod

Re: Issue 3 16k internal RAM mod

Posted: Sat Dec 23, 2017 1:45 am
by mooredan
Kind of late to the party, but here's another completed mod (click on image for full size):

Image

Image

No problem at all, here's the output of "PRINT PEEK 16388 + 256 * PEEK 16389" a.k.a. RAMTOP

Image

That's 32768 -- I've got to get me a bigger monitor.....