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How come they're able to keep the PS1 backward compatibility?

#1sunchipsboiPosted 2/7/2013 2:05:10 AM
What kind of chip runs the PS1 games on the PS3?
#22NIKNIMPosted 2/7/2013 2:35:37 AM
There are no PSone chips in the ps3, if that's what you mean?
PSone games run purely through software emulation.

Now the earlier PS3s had ps2 chips (emotion engine) built inside them for BC. Which results in the PS3 powering of and booting in to PS2 mode when you select your disc from the xmb. Unlike the PSN titles which have the graphics engine recompiled for PS3 compatiblity
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#3FearPotionPosted 2/7/2013 2:45:23 AM
Yup, PS1 is all software emulation. No hardware is needed. There are however a few titles that run poorly or don't run at all without some hardware integration. So about 95% of the PS1 titles work off the disc.
#4Stanger5150Posted 2/7/2013 2:49:30 AM
2NIKNIM posted...
There are no PSone chips in the ps3, if that's what you mean?
PSone games run purely through software emulation.

Now the earlier PS3s had ps2 chips (emotion engine) built inside them for BC. Which results in the PS3 powering of and booting in to PS2 mode when you select your disc from the xmb. Unlike the PSN titles which have the graphics engine recompiled for PS3 compatiblity


Oddly, controllers shut off when PS2 classics are selected from the XMB.
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#5kingofall214Posted 2/7/2013 3:02:06 AM
Does anyone know how Sony is able to release all those ps1 games seemingly without any licensing issues? I ask because I wonder if the ps4 will have a huge digital ps2 library or not.
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#62NIKNIMPosted 2/7/2013 11:51:24 AM
Stanger5150 posted...
2NIKNIM posted...
There are no PSone chips in the ps3, if that's what you mean?
PSone games run purely through software emulation.

Now the earlier PS3s had ps2 chips (emotion engine) built inside them for BC. Which results in the PS3 powering of and booting in to PS2 mode when you select your disc from the xmb. Unlike the PSN titles which have the graphics engine recompiled for PS3 compatiblity


Oddly, controllers shut off when PS2 classics are selected from the XMB.


I never knew that. I play my PS2 games from the disc but would guess the controller software is handled with in the CPU side of the emulation for both PS2classics and discs?

kingofall214 posted...
Does anyone know how Sony is able to release all those ps1 games seemingly without any licensing issues? I ask because I wonder if the ps4 will have a huge digital ps2 library or not.


Not too sure about the fine details in the Licensing, but the devs will no doubt be getting royalties for each game sold through PSN.

If you take into consideration that the Devs/publishers would have stopped counting these games as a line revenue a many years ago and now have Sony offering a re-sale service that will generate money for them with little to no effort at all then it would be an agreeable contract to enter for all parties involved IMO.
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