nesdev.org

I'm currently doing exploratory work with Neo-Geo. (which has kind of hurt progress on my other projects...) Only thing I have that's close to a completed work is a palette testing tool, though. Before I got sidetracked by the Neo, I was thinking about doing PC Engine/TurboGrafx development as well....

I'm not sure how far along you are on your programming journey, but here's a few tips. If you're planning on using C to develop a NES game, there's a few options: Shiru's library thefox's KNES Both of these libraries target cc65 . There's an IDE by cpow called NESICIDE that might be helpful to you a...

Anything is theoretically possible if you put in enough time and effort. In this particular case, you would have to at least consider the following tasks: Figuring out a keyboard reading routine Finding space to put the keyboard reading routine Figuring out where the relevant input routines are in t...

romhacking.net has a 15MB RAR archive of OneBus stuff, which includes the Application Note and Data Sheet for VT02 and VT03, among other items:

http://www.romhacking.net/documents/560/

The mod files come with a palette reference, and a few colors look different from the normal NES palette:

coming eventually...


(this didn't convert to gif very well)

Suddenly I don't feel so bad for dropping a number of things (e.g. Attract Mode screens) out of my Category A entry. Not sure if I'll be able to get 4-player working in time, though. :s

FARID wrote:I need 54 and 55 too, one for UNROM 8 IN 1 and the other one for SNROM 4 IN 1

According to Nestopia (Undead)'s source, Mapper 054 is taken up by "BMC NOVELDIAMOND 9999999-IN-1", and Mapper 055 is used for "BTL GENIUS MERIO BROS"...

tomaitheous wrote:Edit: Is my site showing up in my sig? I can't see it.

You might want to check the User Control Panel (Profile -> Board preferences -> Edit posting defaults) for the "Attach my signature by default" option.

...unless you have a habit of un-checking it before you post

I ran into two small bugs with the syntax highlighting when converting Disch's "The Frame and NMIs" to the wiki: Any label named ":" or any instructions referencing such a label will be commented out. (e.g. beq :+ becomes beq ;:+ ) Any use of high/low byte commands (<, >) also ca...

"PPU?"
"No thanks, I'd rather you not urinate on me."

According to the wiki, Paperboy does. Other games might; I'm not sure.

Looks like turning on the PPU outside of vblank was the culprit; thanks for the help, tepples.

This is what I have at the end of the two screen setup commands (after all my VRAM writes; screenA.s and screenB.s ) ; reset ppu address and scroll: lda int_ppuCtrl and #%11111100 jsr ppu_writeCtrl bit PPU_STATUS lda #0 sta PPU_SCROLL sta PPU_SCROLL ; turn ppu on lda int_ppuMask ora #%00011110 jsr p...

I'm having a problem with a jumpy screen scroll when I try to write new data to switch a screen. I also get the feeling this has been discussed before... I've clipped out the relevant code and uploaded it here (pre-compiled ROM included): https://dl.dropboxusercontent.com/u/6447287/scrollproblem.zip...