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One of the most controversial facts about Microsoft Corp.’s Xbox One is its incompatibility with video games originally developed for Xbox 360 game console. Nonetheless, this may change soon as the company seems to be working on an Xbox 360 emulator for Xbox One. Unfortunately, Microsoft does not know when this software is set to be ready.

When asked whether Microsoft has plans to make an emulator of Xbox 360 for Xbox One, Microsoft’s partner development lead Frank Savage indicated that there were such plans, but there were challenges. The two video game consoles are based on custom microprocessors that are powered by completely different micro-architectures. It is hard to emulate behavior of IBM PowerPC processor on AMD Jaguar x86 cores.

“There are [plans to develop X360 emulator for XB1], but we are not done thinking them through yet, unfortunately,” said Mr. Savage during a session at Build conference last week, reports Kotaku. “It turns out to be hard to emulate the PowerPC stuff on the X86 stuff. So there is nothing to announce, but I would love to see it myself.”


Gears of War: Judgement Day title for Xbox 360. Despite of 2005 graphics processor inside the X360, the game looks good even in 2014.

There are plenty of good-looking Xbox 360 games that would boost popularity of the Xbox One console, so Microsoft should be interested in development of Xbox 360 emulator for the Xbox One. However, the company may not allow Xbox 360 game discs to work on Xbox One, but may decide to create a cloud-based emulation solution that would require customers to buy Xbox 360 games again. Previously Microsoft thought about enabling X360 games on Xbox One using cloud services, which also means necessity to rent or even re-purchase existing games.

Sales of Xbox One game consoles are trailing those of the PlayStation 4. The sooner Microsoft releases something that will improve competitive positions of the Xbox One, the better for the software giant.

Tags: Microsoft, Xbox, Xbox 360, Xbox One, Backwards Compatibility

Discussion

Comments currently: 22
Discussion started: 04/14/14 12:29:45 PM
Latest comment: 04/23/14 05:47:38 PM
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1. 
Why don't they add original Xbox compatibility? It seems like that's not as difficult (both x86-based). Either that, or release a new version of Kung Fu Chaos.
4 0 [Posted by: bluvg  | Date: 04/14/14 12:29:45 PM]
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I know right ?
0 0 [Posted by: amdzorz  | Date: 04/14/14 04:58:23 PM]
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This is actually the most sane comment in here! Other than the interlacing issue there's practically nothing stopping them from recompiling the old kernel with a few tweaks to support the new hardware. Since they run hyper-v on the xbox one it should support new kernels without affecting the old ones.
1 0 [Posted by: basroil  | Date: 04/16/14 05:05:25 AM]
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actually it was a powerPC chip, not x86/64

nvm, i misread.
0 2 [Posted by: Countess  | Date: 04/19/14 07:56:51 AM]
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False, Xbox (original) was a Pentium III chip at 733mhz and 64mb DDR ram. The graphics was also basically an underclocked Ti4200, so everything is perfectly doable in Xbox One
1 1 [Posted by: basroil  | Date: 04/20/14 09:31:52 PM]
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2. 
Good luck emulating modified CELL architecture on those weak ass kabini level cores...
3 3 [Posted by: amdzorz  | Date: 04/14/14 05:00:02 PM]
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Weak? The performance of the current generation is a lot greater than the previous generation, even with the so called Cell processors. Cell processors are very good at certain tasks, but for general purpose processing (which is what you need in game consoles) Kabini would trump Cell.
1 2 [Posted by: Ilya Nemtsev  | Date: 04/14/14 05:58:47 PM]
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No Cell DSPs in the 360--those were specific to the PS3 (as far as game consoles).
1 1 [Posted by: bluvg  | Date: 04/14/14 06:00:23 PM]
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http://en.wikipedia.org/wiki/Xenon_(processor)

yes, the xeonon is a cell derivative.
0 0 [Posted by: amdzorz  | Date: 04/18/14 04:27:07 PM]
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the xenon used the same powerPC part of the cell chip, the general purpose part. NOT the SPE's.
0 0 [Posted by: Countess  | Date: 04/19/14 07:58:27 AM]
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There was no cell architecture in Xbox 360 - but i like what you are smoking, care to share ?
0 0 [Posted by: Atlastiamhere  | Date: 04/18/14 02:16:39 AM]
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http://en.wikipedia.org/wiki/Xenon_(processor)

yes, the xeonon is a cell derivative.
0 0 [Posted by: amdzorz  | Date: 04/18/14 04:27:41 PM]
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the xenon used the same powerPC part of the cell chip, the general purpose part.(and used 3 vs the cells' 1) NOT the SPE's.
0 0 [Posted by: Countess  | Date: 04/19/14 07:57:50 AM]
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as i said in reply to your other comments the the cell SPE's were NOT used in the xbox360, just something very simular to general propose part, the powerPC cores that cell had.(using 3 of those vs the cell's 1)

furthermore, if you needed to emulate those SPE's, you'd emulate them on the GPU, not on the CPU.
1 0 [Posted by: Countess  | Date: 04/19/14 08:01:20 AM]
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3. 
The PS4 could actually be able emulate the Cell processor. The SPE's could be done on the GCN shaders and the PPE on the Jaguar cores. HSA could prove really useful in emulating the PS3. The RSX work could be easily be handled by GCN.Clever programming is needed.
0 0 [Posted by: wlamd  | Date: 04/14/14 07:55:53 PM]
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Except:
1) SPEs are connected by ring memory that can't be converted without massive losses in performance (even GDDR5 isn't fast enough compared to what the Cell had)
2) The RSX has as much compute capability as the PS4, both around 1.8TFLOP. Even if you get 90% efficiency that's still slower than the PS3.
3) Clever programming assumes nobody was clever before. Any games with non-standard calls WILL cause problems. Hell, GTA IV can't play on Windows 7/8 because they abused DX so much they lost forward compatibility.
0 0 [Posted by: basroil  | Date: 04/16/14 04:59:28 AM]
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cell had 25GB/s of memory bandwidth, the PS4 has 176GB/s. (for comparison the xbox one has a bandwidth of 68GB/s to ram, and 103 GB/s to the ESram.)

furthermore, as the AMD chip is HSA all the GPU cores have direct access to the L2 cache of the chip.

and while the 1.8TFlops sounds impressive, in reality it was close to 400gigaflops peak. the 1.8Tflops are basically PR lies.
0 0 [Posted by: Countess  | Date: 04/19/14 08:32:02 AM]
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cell had 25GB/s of memory bandwidth, the PS4 has 176GB/s. (for comparison the xbox one has a bandwidth of 68GB/s to ram, and 103 GB/s to the ESram.)


Not really sure what you are getting at, memory requirements of different architectures and programming styles mean different performance for it.

and while the 1.8TFlops sounds impressive, in reality it was close to 400gigaflops peak. the 1.8Tflops are basically PR lies.


No, it's just the difference between unified shaders and independent shaders. Modern designs let you execute arbitrary instructions on any core while older ones like the G70 don't execute linpack proportional to the actual processing power.

The point isn't that the PS3 is or isn't slower than the PS4, it certainly is slower. The problem is that it's nowhere near slow enough compared to the PS4 for emulation. Some of the indie games should be easy enough to emulate, but recent AAA titles? Probably going to be impossible.
0 0 [Posted by: basroil  | Date: 04/22/14 05:00:32 AM]
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4. 
One way of trying to maximise the existing game stock and a big savings on new games
0 0 [Posted by: tedstoy  | Date: 04/15/14 07:43:41 AM]
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5. 
RSX only has 400 gigaflops, Also a kabini core would run circles around a cell core
0 1 [Posted by: Matthew Wyatt  | Date: 04/18/14 01:30:40 PM]
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I doubt the Kabini core can run circles around the Cell core. The Kabini core still have trouble keeping up with Intel's older generation Core series processors. Take for example AMD Athlon 5150. If combining two of these processors in one die, it will resemble the same exact chip that the Xbox One has.

If you take a look at the following project that the DIY community is doing, Kabini will barely run Xbox 360 games.

http://xbox360emulator.net/

The single thread performance of Kabini is much slower than a Core 2 Duo. Sure the Kabini has two more cores to help it out, but still Xbox 360 games are going to be laggy. AMD's Phenom II X6 processors has higher single thread performance than both Kabini and Core 2 Duo. I am just comparing the single thread performance of the processors which matters for emulators. The processor that does great in single threads or the processor the most instruction per cycle will make the emulator be responsive. As the emulator is coded for multithreaded, performance will improve significantly on processors with best single thread performance because of the multi-cores.

The RSX is the graphics side of things. GPUs can not run general purpose applications. GPUs does best compiling mathematical data.
0 0 [Posted by: tecknurd  | Date: 04/23/14 12:18:13 AM]
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What about the 5350, and the core 2 Duo had what for graphics? was there even ever any graphics ability for the core 2 Duo graphics to speak of, without the help of Nvidia or AMD. And modern emulators can and do use 4 cores, and GPU acceleration via OpenCL, etc.
What is the fastest memory for the core 2 duo's motherboard chipset, compared to the SOC that is Kabini?

"As the emulator is coded for multithreaded, performance will improve significantly on processors with best single thread performance because of the multi-cores."

NO an Emulator coded for multithreaded preformence will perform better on a CPU with more cores, the 5350 has 4 cores and an integrated GPU, and the ability to use OpenCL for GPGPU!

The only advantage the core 2 duo is a higher base clock speed! And how much did the Intel Core 2 Duo E8400 retail for when it was released?
0 1 [Posted by: BigChiefRunAmok  | Date: 04/23/14 05:47:38 PM]
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