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

4-238 Vol. 2B
INSTRUCTION SET REFERENCE, N-Z
#UD If CR0.EM[bit 2] = 1.
If CR4.OSFXSR[bit 9] = 0.
If CPUID.01H:EDX.SSE[bit 25] = 0.
#AC(0) If alignment checking is enabled and an unaligned memory
reference is made while the current privilege level is 3.