nesdev.org

Thanks Blargg. That makes more sense to me now.

Al

I got it working. I reset the frame counter, emit a sound, and poll 4015 until the sounds completes. However I dont really know why the sound that I chose works. As far as I can tell, its a zero length sound. Is the reason it worked because I disabled the length counter, or because a sound cannot ha...

Here's where you can try out the ROM.

http://www.nesworld.com/homebrew_sudoku.htm

I'll get around to posting source code for it someday.

Al

I like the method you mentioned blargg (and dvdmuth) since it means a much smaller change, particularly to my NMI and state machine.

I have a question about how you test though. Are you able to run a PAL NES (with a proper power converter) on an NTSC TV.

Al

Just wondering if this is the generally accepted approach to detecting if you are in a PAL or an NTSC system. - In the NMI handler clear a counter and set a flag variable and RTI - In the reset handler infinite loop, if the flag is set increment a counter over and over (probably needs to be 16 bit) ...

I'll release the ROM and source in a little while. I still have some people testing it.

The main reason I'm hesitant to release the source is that if I am doing something stupid in there (even though it works) I don't want other people learning the wrong way from me.


Al

Oops. I guess cause I'm a newbie.

This is where I've been posting all my questions so I guess its the force of habit. Anyone want to move it?

Al

EDIT-Get the ROM here: http://www.nesworld.com/homebrew_sudoku.htm I finished up my Sudoku game over the weekend. I ended up finding and fixing some bugs after sitting down and playing it for a bit. I probably shouldn't say its finished, since I may hear about bugs from my tester, but its good enoug...

I like it.

My wife told me that she remembered playing a game called pinball factory when she was younger. I can see something like what you've done being readily applied to a game like that.

Al

I had a scrolling bug and this thread helped me fix it.

It turned out I was setting scroll and VRAM to zero in my resetHandler infiniteLoop when I was setting up my NMI statemachine to go to scrolling.

Now I am behaving myself and only playing with those during NMI.

Thanks,
Al

Since I'm almost done my Sudoku game for NES (which I need to have completely done for a game show in April), in May I am planning on starting writing a level editor. (to go with a side scroller NES game I'll be starting this summer. ) My last utility was a nametable editor (and palette, and pattern...

Has anyone on here analyzed the pins of the mini-carts that get inserted into an Aladdin Deck Enhancer (ADE)? The reason I ask is I was wondering what work would be required to replace the chip on those carts with a Flash or EPROM chip (obviously the program would have to be written to work with tha...

Not to side-track the thread, but what would be required to modify the CopyNES itself to make use of USB for its communications rather than Parallel. I realize software changes would be required. I'm curious as to the complexity of the hardware changes (I'm a hardware newbie) EDIT- maybe this should...

Here is a chunk of broken code: getJoyPad1Input: LDA CURRENT_JOY1_STATUS STA LAST_JOY1_STATUS ;LDA CURRENT_JOY2_STATUS ;STA LAST_JOY2_STATUS ; strobe joypad ldx #$09 ; bit zero is 1 stx JOY1 DEX stx JOY1 ; bit 0 is zero ; Now we read 8 times from Joy1 : lda JOY1 LSR A ROR CURRENT_JOY1_STATUS ;lda JO...

I just bought a USB to Parallel adapter. (my laptop doesnt have any Parallel ports). It should be showing up any day now.

Anyone know if that will do the trick?

Al