PS2PSXe public preview (Feedback and Discussions)

**ffgriever** · 08-12-2010,07:06 AM

Indeed. GTA1 works pretty well (although waaaaaaaay too fast... you can't drive without hitting something every few seconds

). I've noticed that the iop side returns -1 and 0 for file handle... This means something was wrong, so the iop part has shut down (when checking indirectly from the ee side, it worked and returned proper handle). Try to use new ps2link and load iomanx yourself. I can also post my changed ps2client and ps2link version (iomanx embedded and loaded by default, ps2client has some fixes... but their purpose is the same as the ones used in ps2client version supplied by dlanor).

I remember we had such an issue in the past with dlanor (few years ago). I even had to write a set of simple test apps to diagnose the problem. I just don't remember what was the problem. It was either ps2link or ps2client... I would have to get to my email archive to check this (which is impossible now).

**sealhealy** · 08-12-2010,07:08 AM

Great work, works beautifully now

**SP193** · 08-12-2010,07:44 AM

hmm adapting psp cso format would be a good idea - every sector is separately zlib (inflate) packed, and there is some sector map in the beggining of the image. i don't think random access is a problem there - it doesn't work that slow on real psp, and decompression doesn't make a noticeable performance hit, unless game streams data all the time.

reference http://ciso.svn.sourceforge.net/viewvc/ciso/trunk/

but the tool has a limitation of being adapted to standard iso images (2048b sectors), with no subchannel - that would require some tweaking, or keeping subchannel separately.

I could offer this project the compression technology used by PS2ESDL.

Compression ratio could sometimes go as low as around 20-30%.
It was scrapped because the IOP was too slow to decompress data fast enough to boost transfer rates over the USB.

Anyway, nice work. It'll be great for use once it's completed.

**yoshi314** · 08-12-2010,07:50 AM

Originally Posted by SP193

I could offer this project the compression technology used by PS2ESDL.

Compression ratio could sometimes go as low as around 20-30%.
It was scrapped because the IOP was too slow to decompress data fast enough to boost transfer rates over the USB.

psx needs way less data than ps2, even when streaming video. so i assume it wouldn't hurt performance that much.

**SP193** · 08-12-2010,07:53 AM

Originally Posted by yoshi314

psx needs way less data than ps2, even when streaming video. so i assume it wouldn't hurt performance that much.

Hurt performance? No way! The EE is almost 10x faster than the IOP!! Performance should increase!!

I remember we had such an issue in the past with dlanor (few years ago). I even had to write a set of simple test apps to diagnose the problem. I just don't remember what was the problem. It was either ps2link or ps2client... I would have to get to my email archive to check this (which is impossible now).

Mind if I ask, but IOMANX is only required for file I/O for this project right (Then won't porting everything to use IOMAN remove this dependency)?

I won't mind helping with that task.

**iCEQB** · 08-12-2010,08:05 AM

Can anybody here tell me where to get IOMANX.IRX ?? Damn ps2dev is always down when you need them the most

**ffgriever** · 08-12-2010,08:10 AM

Originally Posted by SP193

Hurt performance? No way! The EE is almost 10x faster than the IOP!! Performance should increase!!

The EE is quite occupied with all the emulation, so I wouldn't be that sure

Mind if I ask, but IOMANX is only required for file I/O for this project right (Then won't porting everything to use IOMAN remove this dependency)?

I won't mind helping with that task.

Right now iomanx is not really needed. I could simply replace iomanx imports with ioman imports (and delete the unsupported ones

) in the cdr iop module and it would still work

. But I will eventually need iomanx for some stuff I'm planning to do, so I've just made it this way (I didn't even touch iop cdr part for a year or so...). Anyway, the problem was not with the module itself. Of that I'm quite sure. It's not a big problem... The gui will load all the necessary modules.

**pssnake** · 08-12-2010,08:37 AM

Ohh yaaa time to test this baby. thanks ffgriever for this public preview version of ps2psxe.

Originally Posted by iCEQB

Can anybody here tell me where to get IOMANX.IRX ?? Damn ps2dev is always down when you need them the most

same problem here can't find it anywhere on my computer and as ICEQB said can't reach to ps2dev please someone help.

**SP193** · 08-12-2010,08:38 AM

Originally Posted by ffgriever

The EE is quite occupied with all the emulation, so I wouldn't be that sure

Well, I could give it a shot, if you're willing and ready.

same problem here can't find it anywhere on my computer and as ICEQB said can't reach to ps2dev please someone help.

I don't think that it's illegal for me to upload it right?

**iCEQB** · 08-12-2010,08:39 AM

Found it inside ScummVM -.-

It works now.

GTA 1 is running damn fast xD
But GT2 ist locking up after license screens....no execption no nothing

But great work anyway!
I'm looking forward to the final

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