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Intel 64 and IA-32 Architectures Software Developers Manual Volume 2B, Instruction Set Reference, N-Z

ManualsBrandsIntel ManualsOtherIntel Pentium 4 Processor supporting HT Technology 3.00 GHz, 512K Cache, 800 MHz FSB
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INSTRUCTION SET REFERENCE, N-Z
#AC(0) If an unaligned memory reference is made while alignment
checking is enabled.
Compatibility Mode Exceptions
Same exceptions as in Protected Mode.
64-Bit Mode Exceptions
#GP(0) If the memory address is in a non-canonical form.
#SS(U) If the stack address is in a non-canonical form.
#PF(fault-code) If a page fault occurs.
#AC(0) If an unaligned memory reference is made while the current
privilege level is 3 and alignment checking is enabled.