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A comment on A Suprising Discovery Inside the Steam Deck's APU. Parent comment

Re:A Suprising Discovery Inside the Steam Deck's APU by p_l on Sunday January 14, 2024 @07:28PM (#38995967)
The original Xbox was supposed to use AMD CPU as well, and parts of that remained in the architecture (for example it uses Hyper Transport bus), backroom deals with intel led to last minute replacement of CPU for an intel P6 variant.
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Re:A Suprising Discovery Inside the Steam Deck's APU by WhiteDawn on Sunday January 14, 2024 @08:14PM (#38996260)
So last minute that the AMD engineers found out Microsoft went with Intel at the Xbox launch party [1]

[1] https://kotaku.com/report-xboxs-last-second-intel-switcheroo...

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Re:A Suprising Discovery Inside the Steam Deck's APU by whatever1 on Sunday January 14, 2024 @09:27PM (#38996782)
Wow! Good find!
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Re:A Suprising Discovery Inside the Steam Deck's APU by monocasa on Sunday January 14, 2024 @10:04PM (#38997020)
Also, the security system assumes that the system has a general protection fault when the program counter wraps over the 4GB boundary. That only happens on AMD, not Intel.
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Re:A Suprising Discovery Inside the Steam Deck's APU by bri3d on Sunday January 14, 2024 @09:09PM (#38996644)
This also led to a major vulnerability caused by different double-fault behavior between AMD and Intel known as “the visor bug”: https://xboxdevwiki.net/17_Mistakes_Microsoft_Made_in_the_Xb...
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