what is THE guide to superfx programming

Discussion of hardware and software development for Super NES and Super Famicom.

Moderator: Moderators

Forum rules
  • For making cartridges of your Super NES games, see Reproduction.
Post Reply
pipes
Posts: 8
Joined: Sun May 11, 2014 2:23 am

what is THE guide to superfx programming

Post by pipes »

Or for more, the most up to date guide that if one was to make something for the superfx that would be thing thing to turn to.
ARM9
Posts: 57
Joined: Sun Aug 11, 2013 6:07 am

Re: what is THE guide to superfx programming

Post by ARM9 »

There's pretty much only the official documentation (book2, not sure how people feel about linking that stuff here) and this patent. I made some test projects a while back along with a superfx assembler for ca65: https://github.com/ARM9/casfx
Might help you get started.
pipes
Posts: 8
Joined: Sun May 11, 2014 2:23 am

Re: what is THE guide to superfx programming

Post by pipes »

Thanks. I am suprised that there isn't, or wasn't a superfx community with a wiki, some demos, and stuff.
magno
Posts: 193
Joined: Tue Aug 15, 2006 5:23 am
Location: Spain
Contact:

Re: what is THE guide to superfx programming

Post by magno »

ARM9 wrote:There's pretty much only the official documentation (book2, not sure how people feel about linking that stuff here) and this patent. I made some test projects a while back along with a superfx assembler for ca65: https://github.com/ARM9/casfx
Might help you get started.
Why doesn't the SuperFX's pinout described on the patent match the pinout in real cartridges? Maybe the pinout described on the patent is for "reference purpouses", but it should match, shouldn't it? Besides, there are two "weird" descriptions on the patent:
1) FIG.1 shows "/ROMSEL" as an SuperFX input, but this pin is not present in any of the games I checked (Starwing, StuntRace FX and Yoshi's Island). Is it really necessary?

2) It seems a good idea to provide SuperFX with RAS and CAS outputs to attach DRAM to the chip, but both pins are not present either on any of the above games. Do you think Nintendo forecast the future use of DRAM with SuperFX?

Anyway, the patent is worth a read since it describes the overall chip features and shows really interesting schematics. Are there similar patents for SA-1 and SDD-1?
Post Reply