Re: [Tuxnes-devel] TuxNES 0.75 save state patch

[Jason S. <vze...@ve...>]

Allen Noe wrote:

> Attached is an alpha-quality patch which adds _very_ primitive save state
> functionality to TuxNES 0.75.
> 
> It probably has all sorts of bugs, but I'm posting it here so I can get some
> comments on it. Particularly, I'm wondering if I'm saving something that doesn't
> need to be saved, or not saving something that should. I'm also wondering if any
> of you have a format description for SNSS or .STA state files, so the format it
> uses can be compatible with one or the other.
> 
> Currently it only supports the MMC1 mapper, and uses a file named "state" in the
> current directory, supports one slot only, supports X11 renderers only, and the
> keys are hardwired to F9 to save and F10 to load.
> 
> I have tested it on Linux only, and not very extensively.

I put together a primitive save-and-restore patch a few months ago.

Yours looks to be quite a bit more advanced than what I did - I just 
saved the PC, SP, and RAM and hoped on the rest.  It worked adequately 
for a few simple purposes :-).

Eventually Mike (I think) sent me a copy of the SNSS spec.  But I never 
got around to doing the hard context switching work, much less dealing 
with any of the different mappers.

Here's what I did (I think it has some extra changes unrelated to the 
patch, but not much).  I doubt it will help you in any way, but...

jason