Daedalus and the PSP Slim + Lite

[paintball1119]

strmnnrmn updated his blog about his thoughts on making a daedalus for the psp slim only:

A number of people have been asking if Daedalus will support the PSP Slim and Lite (PSP-2000), and if it does, if it will take advantage of the extra 32MiB RAM to improve the speed of emulated roms.

I am planning on supporting 3.xx firmware, but not until I have a PSP with suitable firmware which I can test with directly. People will probably end up compiling the Daedalus source for 3.xx (and they're welcome to), but until I can verify everything directly myself these will have to remain 'unofficial' builds. If there is strong demand for a 3.xx version of Daedalus then I'll consider setting up a donations page with the aim of buying a Slim and Lite for development.

As for the additional 32MiB RAM that the PSP-2000 provides, it's unlikely that this will provide for faster emulation. I've spent a lot of time reducing Daedalus's memory requirements so that it runs comfortably in the 32MiB that the PSP-1000 provides (it's actually a fair bit less than this when you take out OS overheads etc.)

There are only two main areas of the emulator that would benefit from an increase in cache size. The first is the texture cache, which is only used when video memory is exhausted. I fixed a few bugs with this months ago which means that very few roms ever have to place textures in system memory.

The second place that would benefit from a cache increase is the ROM cache. In order to support roms larger than the PSP's system memory, I dyamically map pages of the ROM into the PSP's RAM on demand (rather like virtual memory on PCs.) If a page of the ROM that is requested isn't in the cache, I have to pause emulation as I load it from memory stick. Currently this cache size is 2MiB. It could be increased up to 32MiB which would fit most N64 roms comfortably, and would entirely eliminate paging while the emulator is running. This might give a small speedup, but I don't believe this is currently a significant issue even with the tiny 2MiB cache that is currently in use.

Increasing the dynarec buffers would be very unlikely to provide a speedup, as I've yet to see a rom where they fill up before they are flushed for some other reason (typically instruction cache invalidation.)

So in summary, yes, I will support the PSP Slim and Lite at some point, but no, it's unlikely to offer much of an improvement over the PSP-1000s (other than being slimmer and lighter, obviously

-StrmnNrmn

[Sonicboy 101]

Surely he won't neglect PSP-1000 users?

[DarthPaul]

Great to hear news about Strmn.

[`The0n3]

glad to see he is taking time on r13, its gonna be great.

[Airdevil]

how do i know that neither sonicboy or the0n3 actually read the article?

1. he stated in that article that the slim will not cause any kind of worthwhile speedup, and that he will only go and develop a 2nd build for the slim if the demand is high for it. He is letting 3rd party devs port it so its compatible with the slim. He is staying loyal to the psp-1000

2. The R13 build wasnt even mentioned once. While yes what you said was good, it isnt strictly what this topic is about.

Its nice to know that the original and better (IMO) psp is being stayed loyal to.

[Sonicboy 101]

how do i know that neither sonicboy or the0n3 actually read the article?

1. he stated in that article that the slim will not cause any kind of worthwhile speedup, and that he will only go and develop a 2nd build for the slim if the demand is high for it. He is letting 3rd party devs port it so its compatible with the slim. He is staying loyal to the psp-1000

2. The R13 build wasnt even mentioned once. While yes what you said was good, it isnt strictly what this topic is about.

Its nice to know that the original and better (IMO) psp is being stayed loyal to.

Actually, I did read the article.
Just after I made the post. Silly me
Plus I couldn't be bothered to edit it out.
Anyway I knew the new RAM in the slim wouldn't make much of a difference...
But, like anyone else, I can't wait for the new release of Daedalus.
(If he wasn't going on with PSP-1000 I would have gone nuts anyway... lol)

[MushiMushi]

I am running Daedalus on my PSP Slim

[PSPdemon]

Surely he won't neglect PSP-1000 users?

accualy...hes saying that even with everything added on slim PSP's.... it wont be big enough ( or even really worthy ) of making a slim 2000 version only...

as said here...

So in summary, yes, I will support the PSP Slim and Lite at some point, but no, it's unlikely to offer much of an improvement over the PSP-1000s (other than being slimmer and lighter, obviously

i think the slim is kinda useless....since even though it has added ram and such ( tv out )... it would be useless to make slim only and fat only homebrew...

this is only my opinion..... but i think the slim is really useless...

Thanks for Everything,
PSPdemon

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edit - sorry, took a long time to post it ( helped around the house... lol )

[SpacemanSpiff]

Darn, I was hoping he'd give us a progress report on R13. It was originally supposed to be released this weekend, right? I suppose Strmn's been too busy to spend a lot of time working on it.

[Zaitmi]

He also said that he might release it on the weekend of October. So you should expect a release probably this weekend. Of course that's not a 100% gaurantee, but he usually keeps his word.