Playstation 2 External Storage Device games Loader (PS2ESDL)

[SP193]

Thanks for the info guys, I'm not feeling too well right now but I'll try it in a little bit How much faster will loading times be with the 32mb cache in PS2ESDL and the 64k FAT32 cluster be?

I have no idea as I can't try that. My devices probably won't show an increase in performance anyway.

The cache sizes in PS2ESDL are measured in (2048 byte) sectors, and not in Megabytes.

I also saw one day that the full power of the USB in OPL isn't being used, do you know why that is and is it the same in PS2ESDL?

I don't know what you mean by that, but if you are referring to what I used to occasionally say about OPL: It's because the code for loading games via USB devices isn't too fast. OPL does not perform read-ahead reads for streaming requests, so the USB 1.0 bus's lack of bandwidth makes it really slow at streaming.

Unlike PS2ESDL, OPL doesn't have a large, reconfigurable buffer for IOP-to-EE DMA transfers and unaligned data transfers. It slows down in these areas, but this is not really evident in the HDD and ETH modes because those data sources are fast enough to cover this lack of performance-boosting techniques and caching.

PS2ESDL has got the ability to DMA-transfer data directly to the EE when requests come in, so integration with the RPC side is quite tight at it's core. Nowadays, after I have been educated in school about software design, I don't really like this idea. But it's required for performance.

The Sony CDVDMAN and CDVDFSV drivers don't have large buffers either - so you can see how slow the CD/DVD drive can get (Up to the point where USB devices might not be that much slower as we think).

I need to roll out the new version of PS2ESDL ASAP. I found a way to make some games even faster, as PS2ESDL allocates memory for file I/O operations. If a static buffer is used instead, it gets quite a bit faster (Evident when every game is launched). Plus your game history gets updated when you launch games with the PS2LOGO enabled.

[mrjared123]

I totally messed up about the mb, I wasn't thinking...

And I didn't mean "saw", I meant read. Man, must've not gotten enough sleep...

I didn't understand some of what you said as I am partially an idiot and haven't much knowledge in that area, but I have gotten the just of it: PS2ESDL can transfer memory to the EE faster while OPL doesn't have that kind of code, right?

Did you just say PS2LOGO? That means showing Playstation2 when opening a game like from a disc? That would be AWESOME. I would love that for some reason... Haha, I hope you can come up with something new, take all the time you need though.

[SP193]

I
I didn't understand some of what you said as I am partially an idiot and haven't much knowledge in that area, but I have gotten the just of it: PS2ESDL can transfer memory to the EE faster while OPL doesn't have that kind of code, right?

That's correct.

That also applies to data streaming on both IOP and EE as well.

Video data may be streamed from the CD/DVD, and there are specialized functions for doing that. Usually, the CD/DVD drive will continuously stream data until stopped, without interaction from the game. OPL and PS2ESDL both do not have any mechanism to continously read data in from the device, so they both read data in fixed amounts each time the sceCdStRead() function is called. But unlike OPL, PS2ESDL will start off reading the next block right before returning from the call to sceCdStRead() to get a head start.

Did you just say PS2LOGO? That means showing Playstation2 when opening a game like from a disc? That would be AWESOME. I would love that for some reason... Haha, I hope you can come up with something new, take all the time you need though.

Yes, that is what I meant. However, that has got some checks on the game, to ensure that the Playstation 2 logo is decrypted properly (NTSC PS2 = valid NTSC logo, PAL PS2 = valid PAL logo).

l_Oliveira was the one who told me about what PS2LOGO can do, and I found out later on that it can be used without a valid disc inserted if CDVDMAN and CDVDFSV were replaced, and if the logo was pre-decrypted first.

[mrjared123]

Usually, the CD/DVD drive will continuously stream data until stopped, without interaction from the game. OPL and PS2ESDL both do not have any mechanism to continously read data in from the device, so they both read data in fixed amounts each time the sceCdStRead() function is called.

I know that the videos go a little faster in PS2ESDL than OPL because of experience and such. Is there any way to get that mechanism into PS2ESDL though?

[SP193]

I know that the videos go a little faster in PS2ESDL than OPL because of experience and such. Is there any way to get that mechanism into PS2ESDL though?

You mean porting that streaming mechanism from PS2ESDL into OPL? Yes.

[mrjared123]

No, I meant the streaming mechanism from the CD/DVD that streams continously, or is the USB port just not fast enough.

[SP193]

No, I meant the streaming mechanism from the CD/DVD that streams continously, or is the USB port just not fast enough.

USB Mass Storage Devices are not designed to do that. It's a hardware functionality that the Playstation 2 CD/DVD hardware provides.

Maybe.. with a thread that continuously tells the USB device to send data, it's possible to create such an effect too.

Hi. I have a hard modded fat PS2 and the the Mcboot installed.
Also I have an OPL installed and configured for working with a HD and Seagate ST 380020a (which is on compatibility list).
I also have a DVD folder on the HD with a few game ISO's (used USBUtil ver 1.02 (English).
The problem I have here is that when I tiy to run OPL I comes up with the "HDD Games screen and a menu (Settings, Run, Game settings).
And nothing else. Is it possible it would not detect my HD?

Can anybody help.

Thanks

Wrong forum. And I don't know how to help you with this anyway.

[RandQalan]

Taken care of

[mrjared123]

Any news? It has been a while...

[SP193]

Any news? It has been a while...

Nope. D:
I've been busy, and the remaining problems in PS2ESDL are quite irritating to fix.