nesdev.org

calima, dougeff, turboxray - thank you for your valuable insight, much appreciated! :) That is setting up a 32bit pointer (assuming that happens to be A in 16bit mode, otherwise it won't work at all). Of course, you are correct. With hindsight I should have phrased the topic title a little better! T...

Hi all, A bit of advice if you please... What's the typical way of setting up a pointer to a 24-bit address? I'm using the following method, which works well enough as far as I can tell, but I can't help but think there's a more elegant way of doing it. Using WLA DX: lda #my_data_table ; This reside...

thefox, tokumaru - thank you for the invaluable additional advice. Indirect addressing was exactly the kind of thing I was looking for. Maybe I should read up on the fundamentals before I start asking the questions!

doppelganger - thank you, works like a charm.

Hi guys, I've recently started looking into programming for the NES. So far I've been playing around with sprites and nametables, just trying to get a feel for how it all works. In one such experiment, I have the following two subroutines: create_mario: ldx #$00 @loop: lda spriteData, x sta $0200, x...