N64 Pointers

[HyperHacker]

Does anyone know how pointers generally work in N64 ROMs? Say there was data at 0x112233, what would the pointer be?

[aprentice]

Does anyone know how pointers generally work in N64 ROMs? Say there was data at 0x112233, what would the pointer be?

im guessing 0x80000000 + 0x112233

[HyperHacker]

Tried it. Actually searched for just 112233 as well as 332211.

[aprentice]

Tried it. Actually searched for just 112233 as well as 332211.

well, "just in the rom" it would be at 0x112233.. I think you're confused, are you looking for data in a rom?

[Quvack]

It really depends on the game itself and how stuff is layed out/programmed. Say with a games script you can have the script starting at 0x123456, and then you'll have a pointer table which points to all the starts of dialogs in the script, so if the pointers value is 00 0A or something the value could be 0x123460, at least this is how im going from what I've hacked around with in n64 Its really dependant on the game itself though, and how the rom is swapped, etc..

[HyperHacker]

Well, I'm mainly looking at Mario Kart 64, and later Mario 64. What I'm looking for is pointers in the ROM pointing to data in the ROM.

Also, if anyone knows how to convert N64's 16-bit colour to RGB, feel free to post it, I'm having a lot of problems with it.

[TheBench]

RRRRRGGGGGBBBBBA for palette colors usually.
As for the ROM, it wouldn't be 8XXXXXXX in the ROM, although of course references to RAM in the ROM would be 8XXXXXXX. ROM addresses could be either just their address, or possibly BXXXXXXX.

[HyperHacker]

Bah, it's still not working.

B = ((X And 62) \ 2) * 8
G = ((X And 1984) \ 64) * 8
R = ((X And 63488) \ 2048) * 8
N64Colour = B + (256 * G) + (65536 * R)

[edit] Also, how does 8-bit colour work? A palette index?

[TheBench]

I've not seen any 8-bit color in my experience, they're usually 8-bit indexes to a 16-bit or 32-bit palette. Although N64 texture stuff is different for many games.

[HyperHacker]

Mario Kart 64's course maps seem to use an 8-bit format. I suspect it's a palette index. I render it as 00ggbbrr (R = (X And 3) * 8, G = ((X And 12) / 4) * 8, B = ((X And 48) / 16) * 8), and everything always shows up red.