A good bridge CPU is not easy to make. AMD succeeded (x86-32/64 not really 2 distinct ISAs). Itanium failed at this (x86-32 ISA part was significantly underpowered).
newsroom.ibm.com/2026-08-24-ibm…
newsroom.ibm.com/2026-08-24-ibm…
Aug 25, 2026 · 3:18 PM UTC
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@itanium_guy @jonmasters The company Centaur was originally developing a dual ISA chip with MIPS and x86 ISAs, but decided the x86 was far more valuable and dropped MIPS support.
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