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thefox wrote:

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// Set the low 8 bits of scroll.
PPU_SCROLL( 0, 0 );

That did it! (Writing 0 to $2006 twice), no screens bump at all now. Thank you all for your help!

I have a demo with a firery background and i wish to 'flicker' the fire by cycling one of the colors in my palettes. I've been able to get the colors switched however the screen shakes for a split second when i do this. (I've put my color change call right after V-blank but it doesn't help.) //acces...

I really started learning C when i used the gameboy advance devkit called 'Hamlib' The original site seems to be down but you should be able to find the dev kit around (i think it was eventually given away freely.) It's a great all in one SDK with some good demo /sourcecode if i remember. Here's a b...

Hmm... now that i've corrected the nametable mirroring to be horizontal my multiscroll demo locks up at 'waiting for sprite hit 0 to be cleared' (aftering running for about a second.)

I appreciate all these tips, it helps alot!

The beautiful thing about CC65/KNES is that you can code in C and optimize bit by bit into separate CA65 assembly functions as needed. You get the readabilty of C with the optional speed of assembly. Just my layman's take on the matter. As others have said see the Alter Ego source for a great exampl...

It probably uses MMC3 IRQ's to do those, editing the X on hit. DWIII also does that and so does Rad Racer, but they don't use MMC3 IRQ's because they're MMC1. I don't know how they do it, probably timed code. Yeah i think it's timed code. I just now got 3 parrallax scrolls by waiting for sprite 0 h...

The nifty 3d-ish parrallax scrolling used in the Ninja Gaiden 1 intro:

http://www.youtube.com/watch?v=_rkaiKYEkDQ

Similar to the water in the punch out training sequence:

http://www.youtube.com/watch?v=ITH82ZykGGg

Does this use sprite 0 hit test multiple times per frame? (Moving it down?)