gsu (superfx) support [work in progress]

[Monkey]

Stunt Race FX US version.  Ran fine for 10 mins or so the after I retried the level a few times on the 5th retry I got this interesting error.

PAL SNES with super crc installed.  SFX chip speed normal all hooks set to off.

[DEZn00ts]

Can someone explain to me what USB to SNES is?

[Eyedunno]

Can someone explain to me what USB to SNES is?

It lets you access the SD card through the USB port on the SD2SNES.

[redguy]

Check the first post for v07:

http://krikzz.com/forum/index.php?topic=7451.msg57572#msg57572

Fixed ram timing for more ram chips with worse timing by adding additional fpga clock.
Fixed menu config save bug with gsu speed option.

If you've had problems with it not running at all give this version a try.  I will take a look at the menu editor thing.  It probably moved something in memory that the editor was modifying.

[Eyedunno]

I made a video comparison.
https://www.youtube.com/watch?v=fmhY5sZyOTM
I also did another comparison (no shown) to the earlier Brazilian comparison by syncing it up at the same point he did, then checking on the frame when a certain ship goes offscreen (about 46 seconds in for the real cart). His video had about 8.4 seconds difference between the real cart and the SD2SNES at that point, while mine had about 3.5 seconds difference with v.06.

Anyway, this video may already be obsolete given v.07 above, but it does seem to show an improvement.

[rocketblast]

Everything still works fine for me.  I put the GSU at Fastest and played through 3 levels of Doom.

[brianvgplayer]

The people that have problems. Is a original sd2snes from krizz or is a alliexpress chinese sd2snes?.

Maybe can be the problem, chinese quality.

Mine is an original, rev. H, bought from Stone Age Gamer. I haven't had a chance to try the fix or later revs yet.

[ThiagoRibeiro]

Check the first post for v07:

http://krikzz.com/forum/index.php?topic=7451.msg57572#msg57572

Fixed ram timing for more ram chips with worse timing by adding additional fpga clock.
Fixed menu config save bug with gsu speed option.

If you've had problems with it not running at all give this version a try.  I will take a look at the menu editor thing.  It probably moved something in memory that the editor was modifying.

I think you solved the puzzle, man. Everything is running perfectly, including star fox 2... It wasn't running properly here until now. All games are working correctly even in fast mode (btw, what a lovely feature).

Redguy, thank you so much for this.

[the_randomizer]

Check the first post for v07:

http://krikzz.com/forum/index.php?topic=7451.msg57572#msg57572

Fixed ram timing for more ram chips with worse timing by adding additional fpga clock.
Fixed menu config save bug with gsu speed option.

If you've had problems with it not running at all give this version a try.  I will take a look at the menu editor thing.  It probably moved something in memory that the editor was modifying.

Thanks for the hard work 

[brianvgplayer]

All games, including Stunt Race FX, are working properly for me with v7 in normal mode, but I haven't tried fast mode yet.

[Xtrasmiley]

Thanks for this, again, awesome work!

Anyone able to do a real test with a real cart and normal mode to check for speed? How close is it to actually have a 100% FPGA chip emulation with no slow down?

[James-F]

It's very close.
RedGuy is working on it;

TODO: decide if we should increase the clock rate in DCM to try and match the original cart rather than try to match number of clocks.

[Eyedunno]

Thanks for this, again, awesome work!

Anyone able to do a real test with a real cart and normal mode to check for speed? How close is it to actually have a 100% FPGA chip emulation with no slow down?

I did a test with a real cart and normal mode. This is on a Super Nt in Zero Delay mode, so it is running about one frame every ten seconds slower than a real SNES, but that should not be noticeable. Also, my SD2SNES is Rev. F.
https://www.youtube.com/watch?v=rJ60_7HGtSE
I'm not sure anymore that normal mode really is faster than v.05 and before. Maybe it's my imagination or mostly my imagination.

[AcidRain]

Doom crashed on the first level after picking up ammo towards the end of the stage. GSUv7 fast speed on the Super NT

[jonnnlad]

I cant keep up with all the updates!

Thanks Redguy!