nesdev.org

Thanks for the help, will test em once I have time. Exam week coming up so I got to cram lol.

Turn the NSF into a NES file, then use FCEU's Code Data Logger to make a stripped rom, then turn it back into a NSF. But I don't know if that will work very well, since NSF files are programs, not just data. You'd need to do a lot of hacking to make it fit within the E000-FFFF area, unless 8000-FFF...

Just to understand NSF a bit more: The load address is where to start copying data to after the header correct? Not sure what the init address does. It's a subroutine I assume, that takes what is in the accumilator. What it does to it I am not sure. Play Address is the code that runs every song frame?

It is running at 20mhz (couldn't find a ossilator at the 21.----mhz speed). I am a amateur when it comes to circuitry, doing it for fun as a side project for one of my CompSci courses. Anyway, since I didn't have the right resistors on hand (and I am a huge noob with analog circuits) I did some tria...

I'd like to test out a small computer I am building from a NES 2A03, and would like to test out the ALU. Trying to figure out the way the NSF format is setup, but it seems you need to basically have the whole NES memory map available to you. My computer is setup as this: $0000-$1FFF SRAM, $E000 - $F...

How does the NES combine both of these pins into one output? I am building a small homebrew computer out of the NES 2A03, and would like to use the ALU for sound. If I try to tie both to one line, the other cuts out. Currently I have SND 1 connected to a LM386 amplifier. If I can do it with only one...

Instead of making another post, I'll ask in here since I have a similar question. I am building a small project homebrew computer out of the NES's 2A03. I am having trouble with getting both SRAM and ROM to work. Currently I have the M2 line wired to a active-high enable on a 74HC138 (3-8 decoder). ...