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Intel 253666-024US User Manual

Page 333

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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.