Any NES programmers who want to port there game to SNES?

AaendiAaendi
in The Brewery
A couple of days ago I whipped up an initialization routine that sets the SNES up similar to the NES.  I'm wondering if it would be useful if I add to it more emulation routines such as oam-format converting, color palette format converting, and maybe even emulating the MMC3 or MMC5 chips.

Comments

  • MemblersMemblers
    I suppose sound is something that people might want to enhance in that case, but if not, I wanted to point out that I had released source code for emulating NES sound on the SPC. No DPCM though.

    http://membler-industries.com/SNES/2a03-src.zip
  • GradualGamesGradualGames
    Hey! That's kinda neat! Scariest thing to me about SNES development would be sound (granted, haven't dug into it much, but it sounds scary)---making an NES-like game on SNES with perhaps some fewer constraints than the NES might be really fun to do though!
  • thefoxthefox

    Originally posted by: GradualGames



    Hey! That's kinda neat! Scariest thing to me about SNES development would be sound (granted, haven't dug into it much, but it sounds scary)

    I kind of think it's the opposite. Because SNES has a separate processor (and memory) for sound, you can just throw a program in there and forget about it (for the most part). And there are some supposedly OK libraries out there that can do most of the work for you, like SNESMOD (can play IT modules and sound effects as well).



    So, nothing to worry about.
  • GradualGamesGradualGames

    Originally posted by: thefox




    Originally posted by: GradualGames



    Hey! That's kinda neat! Scariest thing to me about SNES development would be sound (granted, haven't dug into it much, but it sounds scary)

    I kind of think it's the opposite. Because SNES has a separate processor (and memory) for sound, you can just throw a program in there and forget about it (for the most part). And there are some supposedly OK libraries out there that can do most of the work for you, like SNESMOD (can play IT modules and sound effects as well).



    So, nothing to worry about.

    Neat. The composing part still scares me, it seems like it'd be a lot tougher to get music to sound really good. It's tough enough on the NES!




  • AaendiAaendi
    I might as well upgrade from xkas to bass, since bass can do spc700 code. Too bad I don't know how to run it. There isn't a GUI version of bass as far as I know.
  • DoNotWantDoNotWant

    Originally posted by: Aaendi



    I might as well upgrade from xkas to bass, since bass can do spc700 code. Too bad I don't know how to run it. There isn't a GUI version of bass as far as I know.



    I can help you make 65816 code bass v.14 compatible if you want. To run bass from the cmd in windows just type bass your_main_asm_file.asm -o outputname.sfc


  • AaendiAaendi
    Sure go right ahead.
  • DoNotWantDoNotWant

    Originally posted by: Aaendi



    Sure go right ahead.



    https://www.dropbox.com/s/jl69tnifdwocg0x/snes initialization.rar



    For some reason byuu did'nt add tcs, so I changed the stack pointer set-up to use the x register instead.


  • AaendiAaendi
    Here are the changes I've made:



    Changed from xkas to bass.  From LoROM to HiROM with the default VRAM bank at $c20000-$c2ffff.  Added support for audio, with the default audio RAM bank at $c30000-$c3ffff.
  • AaendiAaendi
    Added joypad and OAM.  OAM buffer is located at $7e2000.
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