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Xbox 360/Hardware information: Difference between revisions
m (Anonmoosekaab moved page 360/Hardware information to Xbox 360/Hardware information: Subpage fix (please don't botch it this time)) |
(Move Xenos to its own subpage as there's a LOT to write about it. Will post more over coming days) |
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The Xbox 360 continues Microsoft's trend of PC-like architectures for their consoles. While the x86 CPU used in the previous and next two generations is replaced with a PowerPC CPU, many of the same characteristics carry over from other consoles, including unified memory, an NT-based kernel, and forward looking GPU. While there are still some proprietary aspects to the hardware, they are far fewer than competing consoles. | The Xbox 360 continues Microsoft's trend of PC-like architectures for their consoles. While the x86 CPU used in the previous and next two generations is replaced with a PowerPC CPU, many of the same characteristics carry over from other consoles, including unified memory, an NT-based kernel, and forward looking GPU. While there are still some proprietary aspects to the hardware, they are far fewer than competing consoles. | ||
==Sub-pages== | |||
{{subpage|Xenos (GPU)|text=Has a lot of quirks}} | |||
==General== | |||
===CPU=== | ===CPU=== | ||
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Things to note: Lacks out of order execution. Very long pipeline, manual branch predictor, making it terrible at code that requires CPU "agility". Clock speed and core count gives deceptively high on paper performance. | Things to note: Lacks out of order execution. Very long pipeline, manual branch predictor, making it terrible at code that requires CPU "agility". Clock speed and core count gives deceptively high on paper performance. | ||
===Useful Links=== | ===Useful Links=== | ||
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https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf - Ghidra XEX loader processor manual | https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf - Ghidra XEX loader processor manual | ||
Latest revision as of 06:26, 15 April 2024
The Xbox 360 continues Microsoft's trend of PC-like architectures for their consoles. While the x86 CPU used in the previous and next two generations is replaced with a PowerPC CPU, many of the same characteristics carry over from other consoles, including unified memory, an NT-based kernel, and forward looking GPU. While there are still some proprietary aspects to the hardware, they are far fewer than competing consoles.
Sub-pages
 | Xenos (GPU) Has a lot of quirks |
General
CPU
- 3c6t PPC Xenon @ 3.2GHz
- Derived from Cell PPE/PowerPC 970
- SPEs replaced with SIMD extensions and larger vector registers, known as VMX128
Things to note: Lacks out of order execution. Very long pipeline, manual branch predictor, making it terrible at code that requires CPU "agility". Clock speed and core count gives deceptively high on paper performance.
Useful Links
General
https://en.wikipedia.org/wiki/Xbox_360_technical_specifications
https://www.copetti.org/writings/consoles/xbox-360/
Xenon
https://github.com/xenia-project/xenia/blob/master/docs/ppc/core_instructions.pdf
https://github.com/xenia-project/xenia/blob/master/docs/ppc/altivec_instructions.pdf
https://github.com/xenia-project/xenia/blob/master/docs/ppc/vmx128.txt
https://wiki.raptorcs.com/w/images/f/f5/PowerISA_public.v3.1.pdf - Ghidra XEX loader processor manual