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Vol. 2A 3-287
INSTRUCTION SET REFERENCE, A-M
F2XM1—Compute 2x–1
#U Result is too small for destination format.
#P Value cannot be represented exactly in destination format.
Protected Mode Exceptions
#NM CR0.EM[bit 2] or CR0.TS[bit 3] = 1.
#UD If the LOCK prefix is used.
Real-Address Mode Exceptions
Same exceptions as in protected mode.
Virtual-8086 Mode Exceptions
Same exceptions as in protected mode.
Compatibility Mode Exceptions
Same exceptions as in protected mode.
64-Bit Mode Exceptions
Same exceptions as in protected mode.