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I've been playing with this some more today. I have added a new routine after the NMI jumps to the NSF's play address. Right now, I am trying to get a sound for the cursor movement to play and it does indeed play over the NSF now, though it sounds bad and it also makes the NSF sound very bad for a f...

Alright. I've used Famitracker for some of my earlier works, but now I want something that's more flexible. From what I have heard, most engines involve the user typing in the desried music data in hex, which doesn't sound too hard. The main thing I need is something that's not hard to figure out an...

Thanks for the comments. I'm working on a scoring system. I'm actually trying to come up with a good multiplication routine as scoring numbers can get kind of big when you get up there. The basic way the Genesis scores is: 30 * number of 3 of a kind instances * level number + 1 (you start on level 0...

Hey folks. Thanks to the help I got, I have a pretty clean rom of a functional Columns game. Right now, things are simple and only 8 blocks are in the rotation of what you get (one of which being the magic jewel), so things won't be too challenging. Though you can see how the engine works currently....

I was talking in chat last night and think I got a pretty good solution: I disabled sprite DMA as no sprite are moving/updating at this point and optimized my drawing code a tiny bit and the end result is great!

Thanks for the tips though.

I'm doing a clone of the game Columns and, when you score lines, it's not unusual for various parts of the BG to change. I've been trying several methods and it seems too much happens in vblank, although this occurs randomly. My basic plan of attack was this: -I have an array of 96. 16 rows, 6 colum...

I saw the revised code. Thanks for the assistance, PAL emulation on 3 different emus produces the new results.

I originally had this configurable in the option screen, but now this test works. Kinda cool that my game is "region-free". 8)

blargg wrote:

Code: Select all

         
        lda $2007
        sta ntsc_if_neg

Sorry for sounding like a noob, but what exactly would the value be in $2007 at this point if it was PAL? 0? I'd prefer to do a CMP and store a number in a variable.

I should also have this check at the beginning of my NMI, yes?

Thanks.

Is there simple code that can detect which version of the NES someone has during bootup? I wanted to make my game have adjustments for PAL. The NSF I use can be done easily enough, though timed events are slower.

This may sound like a dumb question, but I wanted to confirm: In my Simon clone Siamond, I was previously using a simple variable in zero page of size 51 bytes for my array to hold the game's sequence (the game stopped at 50 colors). Though I came up with the idea of maybe using some other memory an...

@WhoaMan: That first one looks interesting. Is it a puzzle game? It looks like it. Can you jump in the lava and die? 8)

I've done two games.

Geminim - Based on the logic game of Nim. It's in cartridge form
Siamond - Clone of Simon. Will be in cart form.

I have a third idea for something bigger, but I haven't really started.

Interesting logic. Not a bad port either. I don't know how Nintendo did it (randomness) back in the day, but I've played the NWC1990 cart a few times and if you score a certain a amount in SMB1, you always seem to get a certain sequence of pieces in Tetris. It seems to me they had something like arr...

Topic says it all. I'm just curious if anyone's tried doing their own Tetris and what people may have used for the randomness in the order the pieces appear in.

I know this thread is old, but I wanted to look back into it. Basically, I got nice-sounding stuff with Famitracker and the NSFs I've created. The real trick now is to just get sound effects and music at the same time from the same NSF. What I'm unclear on is what do I store into the "virtual&q...