Homebrew CTRX - PS1 Emulator

[the_randomizer]

No good. Very low fps (maybe up to 20 at best)

So why do they even bother with PS1 on the O3DS? Isn't it kind of a waste of resources esp. if it can't be improved? I am curious.

 

[lemanuel]

So why do they even bother with PS1 on the O3DS? Isn't it kind of a waste of resources esp. if it can't be improved? I am curious.

They simply ported it. They didn't do it specifically for the O3DS or N3DS.
And it just got ported. It's not optimized at all.

 

[the_randomizer]

They simply ported it. They didn't do it specifically for the O3DS or N3DS.
And it just got ported. It's not optimized at all.

I know that, but...so there's no chance of anyone optimizing it, is it even feasible?

 

[Columbo2811]

Delete

 

[lemanuel]

I know that, but...so there's no chance of anyone optimizing it, is it even feasible?

They'll be optimized in time. But that doesn't mean that O3DS will ever reach the same performance as the N3DS obviously. (it would be great if I'm wrong tho)

This emulator for example, it's still in a very early stage but since it's being written from scratch, unlike the retroarch ports, it might bring some surprises later on

 

[the_randomizer]

They'll be optimized in time. But that doesn't mean that O3DS will ever reach the same performance as the N3DS obviously. (it would be great if I'm wrong tho)

Damn, see, both the O3DS and N3DS have pluses and minuses, it seems. I hope at least 8 and 16-bit (and GBA) will be optimized further.

 

[teampleb]

I really wonder how the new 3DS runs it.

BTW don't forget that this is like one of the first builds for 3DS. It wil get better over time, (probaly even full speed on every game on n3DS in a year)

It's like 50 - 60 FPS in 2D PS1 games.

 

[the_randomizer]

It's like 50 - 60 FPS in 2D PS1 games.

Bleh, now I really don't know which one to get, but I doubt the O3DS will get full speed with PS1 ><

 

[teampleb]

They'll be optimized in time. But that doesn't mean that O3DS will ever reach the same performance as the N3DS obviously. (it would be great if I'm wrong tho)

This emulator for example, it's still in a very early stage but since it's being written from scratch, unlike the retroarch ports, it might bring some surprises later on

o3DS may be able to reach what the n3DS is now but it'll never be on on the same performance level. Any optimization for o3DS also speeds up the n3DS too.

 

[lemanuel]

o3DS may be able to reach what the n3DS is now but it'll never be on on the same performance level. Any optimization for o3DS also speeds up the n3DS too.

That was my point

 

[machinamentum]

How far is the progress gone?

The current release is far enough along to play simple PS1 homebrews. As for the next release, the current focus is mostly on optimizations to CTRX and Caelina as well as potentially some ISO reading support.

 

[machinamentum]

v0.7-alpha now available. This adds rudimentary HSF/ISO file support. It currently cannot load files within a directory in the ISO file, so it currently can only run games that store all their files in the root directory. The interpreter uses a pseudo-threaded dispatch system now, which theoretically gives slightly better performance as it allows the ARM's branch predictor to predict the emulated CPU's instructions.

 

[dark_samus3]

v0.7-alpha now available. This adds rudimentary HSF/ISO file support. It currently cannot load files within a directory in the ISO file, so it currently can only run games that store all their files in the root directory. The interpreter uses a pseudo-threaded dispatch system now, which theoretically gives slightly better performance as it allows the ARM's branch predictor to predict the emulated CPU's branch paths.

Out of curiosity (you've probably mentioned it before) but do you have anything that you could test so you could use dynarec when this gets to the point where dynarec would be viable? Of course I'm not asking for dynarec but it seems like the natural progression for this emu to squeeze every little bit of performance out... Anyways great work and that branch prediction sounds AWESOME for performance reasons, good luck and thanks for this

 

[machinamentum]

Out of curiosity (you've probably mentioned it before) but do you have anything that you could test so you could use dynarec when this gets to the point where dynarec would be viable? Of course I'm not asking for dynarec but it seems like the natural progression for this emu to squeeze every little bit of performance out... Anyways great work and that branch prediction sounds AWESOME for performance reasons, good luck and thanks for this

Not at this time. I'll focus on dynrec when it is reasonably feasible to use a dynrec on latest firmwares. My main focus right now is reducing Caelina's overhead, and CTRX's core implementation.

 

[AtlasFontaine]

v0.7-alpha now available. This adds rudimentary HSF/ISO file support. It currently cannot load files within a directory in the ISO file, so it currently can only run games that store all their files in the root directory. The interpreter uses a pseudo-threaded dispatch system now, which theoretically gives slightly better performance as it allows the ARM's branch predictor to predict the emulated CPU's instructions.

Wait, can I load psx backups now?

 

[teampleb]

Wait, can I load psx backups now?

No, it can load more homebrew now though.

 

[AtlasFontaine]

No, it can load more homebrew now though.

Oh, that's cool then

BTW, I think people should stop talking about the retroarch psx core in this thread, there is already retroarch thread for that.

 

[xXDungeon_CrawlerXx]

Can't wait for a Version which is able to run retail game dumps!
Hope it has a better performance than RetroArch then.
Right now, Games like FF9 running with 35-56fps on N3DS (Spyro 2 only up to 25fps).
But It would be awesome to see a emulator that is able to run almost every game at fullspeed.

 

[machinamentum]

v0.8-alpha now available. This release doesn't add anything new, however, I've managed to fix a major performance & emulation issue. This fixes all speed problems seen in previous releases. This even runs fast on O3DS.

 

[AtlasFontaine]

v0.8-alpha now available. This release doesn't add anything new, however, I've managed to fix a major performance & emulation issue. This fixes all speed problems seen in previously releases. This even runs fast on O3DS.

You're da MVP, keep the good work man!