Overclocking Feature?

Guest · Post by **Guest** » Tue Jan 02, 2007 5:55 pm

I was wondering if you can impliment an overclocking feature in the emulator.

For example, let's look at MAME, which has this feature. In games like Double Dragon normally, the game would slow down massively when 2 guys come on screen. However, if you overclock the CPU within the game, the game doesn't slow down at all anymore.

smkdan · Post by **smkdan** » Tue Jan 02, 2007 6:32 pm

I thought about asking about this before but I figured there wouldn´t be much of a response.

It is pretty much obligatory to put the feature in Mame / Neo emulators where there´s plenty games that tank hard very easily.

Gradius 3 and Parodius 3 (so much for the extra 10mhz...) are the only games that come to mind when I think of slowdown. Would still be nice to see the feature because it´s irritating getting all the options and having the game crawl along at snail´s pace.

Deathlike2 · Post by **Deathlike2** » Tue Jan 02, 2007 6:33 pm

Even if you "think" this idea is cool, it is not. Why in hell would one want to test against "virtual overclocking" when some games are relatively sensitive to precise timing? This is not a bright idea.

blackmyst · Post by **blackmyst** » Tue Jan 02, 2007 7:10 pm

Isn't the "percent to execute" option or whatever it was called, in the cfg file, about the closest thing to "overclocking" there is?

But yeah, as was mentioned before, SNES games are very timing-sensitive. They might become extremely glitchy, crash, or unable to start at all.

AntoineWG · Post by **AntoineWG** » Tue Jan 02, 2007 7:19 pm

Just use the fastforward (~) key.

Deathlike2 · Post by **Deathlike2** » Tue Jan 02, 2007 7:22 pm

AntoineWG wrote:Just use the fastforward (~) key.

That's not quite the solution. He's looking to remove the "slowdowns" when too many sprites are on the screen.

Seriously though, you won't get any sort of accurate emulation by doing this in the first place.

Guest · Post by **Guest** » Wed Jan 03, 2007 12:46 am

Deathlike2 wrote:
AntoineWG wrote:Just use the fastforward (~) key.
That's not quite the solution. He's looking to remove the "slowdowns" when too many sprites are on the screen.

Seriously though, you won't get any sort of accurate emulation by doing this in the first place.

I don't mind if I don't get 100% accurate emulation. I prefer playablity over accuracy IMO.

But isn't it possible to play the game and not crash? Wasn't there a person that actually overclocked a SNES game and it actually worked with better results.

Firon · Post by **Firon** » Wed Jan 03, 2007 12:59 am

No, when he overclocked it games ran faster than normal and with stability issues, iirc.

Deathlike2 · Post by **Deathlike2** » Wed Jan 03, 2007 1:03 am

There was supposedly one guy that overclocked the SuperFX chip or something and supposedly everything went faster. However, I really don't think it would have been a good idea in the long run (if this is all true anyways). In any case, you will not get desirable results.

Guest · Post by **Guest** » Wed Jan 03, 2007 2:19 am

Deathlike2 wrote:There was supposedly one guy that overclocked the SuperFX chip or something and supposedly everything went faster. However, I really don't think it would have been a good idea in the long run (if this is all true anyways). In any case, you will not get desirable results.

There must be a way to OC it, yet not cause stability issues somehow.

I must get rid of the slowdown in the games.

creaothceann · Post by **creaothceann** » Wed Jan 03, 2007 3:38 am

Your only chance would be examining the game's assembler code, find out what areas need to be changed to allow for a faster CPU, and change them. See ya again in five years, at least...

Really, try to find a port that runs on better hardware.

Starman Ghost · Post by **Starman Ghost** » Wed Jan 03, 2007 3:59 am

Yes. Edit zsnesw.cfg and change the percent to execute to something higher that 100. This can cause instabilty in the games though.

Guest · Post by **Guest** » Wed Jan 03, 2007 4:16 am

Starman Ghost wrote:Yes. Edit zsnesw.cfg and change the percent to execute to something higher that 100. This can cause instabilty in the games though.

Tried it in a game with a lot of slowdown (Final Fight 3) and it fixed it.

However, can you set it higher than 150 though? It seems like it does nothing after 150 IMO.

Deathlike2 · Post by **Deathlike2** » Wed Jan 03, 2007 4:20 am

150 is the limit. Does anyone read the cfg file or the command line limits or... the docs??

Guest · Post by **Guest** » Wed Jan 03, 2007 4:36 am

Deathlike2 wrote:150 is the limit. Does anyone read the cfg file or the command line limits or... the docs??

I was hoping it would go higher.

Made games, especially the Super FX games run a lot smoother. Might go even smoother if I can go higher.

Firon · Post by **Firon** » Wed Jan 03, 2007 7:34 am

Deathlike2 wrote: Does anyone read the cfg file or the command line limits or... the docs??

reading... docs? what is reading docs this you speak of

adventure_of_link · Post by **adventure_of_link** » Wed Jan 03, 2007 5:45 pm

http://zsnes-docs.sf.net

THOSE docs. -_-"

Aerdan · Post by **Aerdan** » Wed Jan 03, 2007 6:34 pm

It's called *sarcasm*, Chuckles.