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        • 5.50 Uncategorized "Instructions"
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• 5.1 General-Purpose Instructions

5.1.13 Miscellaneous Instructions

Unimplemented instructions are:

• XLAT: table lookup in memory
• PREFETCHW: prefetch with intent to write
• CLFLUSH: flush cache line
• MOVBE: move data after reversing byte order

One oddity: Another UD operation form, UD0 (0x0FFF) is described in the manual but not listed in our opcode maps.

Unimplemented Instructions

Opcode	Mnemonic	Other Information	Semantic Function
D7	XLAT/XLATB
0F 0D	prefetchw(/1)
NP 0F AE	CLFLUSH	:PFX :NO-PREFIX :REG 7 :MOD :MEM :FEAT :CLFSH

Implemented Instructions

Opcode	Mnemonic	Other Information	Semantic Function
8D	LEA		x86-lea
0F 0B	UD2		x86-illegal-instruction -- ((message . "UD2 encountered!"))
0F 1F	NOP		x86-two-byte-nop
0F A2	CPUID		x86-cpuid
0F B9	UD1		x86-illegal-instruction -- ((message . "UD1 encountered!"))
NP 0F 38 F0	MOVBE	:PFX :NO-PREFIX :FEAT :MOVBE	x86-movbe-op/en-rm
66 0F 38 F0	MOVBE	:PFX :66 :FEAT :MOVBE	x86-movbe-op/en-rm
NP 0F 38 F1	MOVBE	:PFX :NO-PREFIX :FEAT :MOVBE	x86-movbe-op/en-mr
66 0F 38 F1	MOVBE	:PFX :66 :FEAT :MOVBE	x86-movbe-op/en-mr