dlsmd
New Member
Posts: 5
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ps2
Mar 14, 2008 21:05:48 GMT -5
Post by dlsmd on Mar 14, 2008 21:05:48 GMT -5
i was wondering if its possible to convert pSX to run on the ps2(I'm only talking about the psx portion not the ps2 parts)?
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ps2
Mar 14, 2008 21:17:39 GMT -5
Post by psicomaniaco on Mar 14, 2008 21:17:39 GMT -5
I don't think the PS2 has enough power to run pSX, dlsmd.
The PS2 plays PS1 games because it DOES have PS1 parts in it. The PS2 does NOT emulate the PS1. Emulation requires a decent processor, and PS2's CPU isn't that great.
Remember also that the retro-compatibility is not ALL that bad, and most PS1 games run on the PS2.
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ps2
Mar 15, 2008 5:29:18 GMT -5
Post by Gamesoul Master on Mar 15, 2008 5:29:18 GMT -5
Yeah, not sure why you'd want to run an emulator on the PS2 for PS1 when the PS2 has a higher compatibility rate than pSX, and pSX would run horribly slow (as I recall, doesn't the PS2 have a 3xx MHz processor and like... 32 MB of RAM?).
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ps2
Mar 15, 2008 10:48:21 GMT -5
Post by Sune on Mar 15, 2008 10:48:21 GMT -5
Can I run CCS64 on my Commodore 128?
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dlsmd
New Member
Posts: 5
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ps2
Mar 15, 2008 14:05:45 GMT -5
Post by dlsmd on Mar 15, 2008 14:05:45 GMT -5
the main reason is id like to run psx games from the hd in my ps2
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ps2
Mar 15, 2008 22:52:38 GMT -5
Post by Sune on Mar 15, 2008 22:52:38 GMT -5
That would be a job for the people who write the software that enables you to load games from the harddrive.
From what I've heard, it's impossible due to the way the PS2 runs PlayStation games. Don't remember the details, it's been a long time.
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ps2
Mar 16, 2008 10:02:30 GMT -5
Post by Gamesoul Master on Mar 16, 2008 10:02:30 GMT -5
It's a matter of not being able to access the hard drive while in PS1 mode. Since it must be in PS2 mode for the hard drive to be accessable, it becomes impossible to play PS1 games from it. That's why it'd have to be done via emulation, which is just as impossible given the PS2's specs.
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ps2
Mar 16, 2008 12:11:06 GMT -5
Post by Sune on Mar 16, 2008 12:11:06 GMT -5
I guess if this could be rerouted via mod chip there would be a one available with this functionality by now.
Or maybe nobody thought about doing it.
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ps2
Mar 16, 2008 12:53:27 GMT -5
Post by Gamesoul Master on Mar 16, 2008 12:53:27 GMT -5
Yeah, it's not really possible. People have tried, and people have begged for it. It just doesn't seem possible to use functions from both modes at the same time. There's a lot more technical details about it, but all I know is that it can't be done (at least that's the experience thus far).
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ps2
May 21, 2008 4:53:29 GMT -5
Post by Heihachi_73 on May 21, 2008 4:53:29 GMT -5
I've always wanted to run demos straight from a USB stick on a PlayStation 1 without wasting a CD-R or RW, but it's just not possible. Probably not possible on a stock PS2 either.
Another thing I've always wanted to try is to hook up the controller/memory card ports directly to the PC using the actual ribbon cable. It actually fits into a 5¼” drive bay quite well. My thought is 'where there's a will, there's a way' on this one. COM, LPT or USB port possible?
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ps2
May 25, 2008 2:24:53 GMT -5
Post by Firehawke on May 25, 2008 2:24:53 GMT -5
Running demos off USB is possible if they're PS2 demos; the USB ports aren't accessible to the system in PS1 mode. There's a new memory card-based exploit that apparently removes the need for a PS1 disc to get softmodding working, and the exploit installs uLaunchELF to be able to run arbitrary software, but.. that exploit has some issues yet for NTSC system users like myself (particularly in that it stops disc access entirely and has serious software compatibility issues)
On the other hand... hooking up a memory card slot to PC is theoretically possible, and really not that hard, but you'd need to actually add read/write support to software for it. Really, you'd be better off just modding two dexdrives into a drive bay slot.
Even then, it wouldn't do much good without pSX adding support to direct read/write cards. While I have specifically asked for that feature in the past, I think the author has bigger priorities right now. Really, I'm not entirely sure it fits with the theme of pSX.. though it'd certainly be nice..
Edit: On the remaining topic, it's pretty much 100% confirmed that the HD is just not accessible from PS1 mode. We are still uncertain about how Now, pSX precompiled for PS3 Linux.. now THAT might work. Don't get your hopes up, though I'm suddenly VERY curious how well that would run.
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ps2
Jun 14, 2008 20:20:17 GMT -5
Post by Heihachi_73 on Jun 14, 2008 20:20:17 GMT -5
About the PS1 part (a real PS1), I was thinking of somehow making a USB connector and sending the information through to the actual board, in a pseudo-replacement for the original CD-ROM drive. It might produce some errors if it wants to load something at a certain speed though, I never thought of how a PSX would buffer XA/CDA or anything like that. About the memory card ports: The reason I thought of it was the fact that both the controllers and memory cards are on the same item, if someone started making converters, everyone would start hacking up their old PSX consoles to fit. In my idea, all you would need to do is attach the ribbon cable to the (prototype) PCB and slot it into a custom made 5.25" bay. You could even hack up an old CD-ROM drive so it could be screwed in. No need to waste the front-access USB ports! Why have a simple PSX to USB controller converter when you can have the whole lot, using genuine Sony parts! This should maybe go into a separate non-emulation thread (those with authoritah, move this if inappropriate).
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ps2
Jun 24, 2008 17:53:27 GMT -5
Post by thespoonyhou on Jun 24, 2008 17:53:27 GMT -5
The PS2 plays PS1 games because it DOES have PS1 parts in it. The PS2 does NOT emulate the PS1. Emulation requires a decent processor, and PS2's CPU isn't that great. Actually, the PS2 DOES emulate PSX... Well, at least the Slim version does. But probably it emulates the PSX taking advantage of the similarities in the hardware, like the PSP does.
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ps2
Jun 24, 2008 20:08:17 GMT -5
Post by Ultima on Jun 24, 2008 20:08:17 GMT -5
The PS2 includes the PS1 CPU as an I/O processor, and uses it to handle PS1 games. It isn't emulation when it's using native hardware to run the software.
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ps2
Jun 25, 2008 20:35:13 GMT -5
Post by thespoonyhou on Jun 25, 2008 20:35:13 GMT -5
I was pretty sure Sony had taken out the PSX chips from the Slim model... Well, I guess it doesn't mater.
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