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![]() Intel and compatable CPU's Programming Information ![]() |
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Intel SSE MMX2 KNI documentation AMD 64 Bit & Opteron resource on this site Intel Itanium 64 Bit processor Intel 80386 Reference Programmer's Manual Our Partners: |
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prev: MOVS/MOVSB/MOVSW/MOVSD Move Data from String to String next: MOVZX Move with Zero-Extend
MOVSX -- Move with Sign-ExtendOpcode Instruction Clocks Description 0F BE /r MOVSX r16,r/m8 3/6 Move byte to word with sign-extend 0F BE /r MOVSX r32,r/m8 3/6 Move byte to dword, sign-extend 0F BF /r MOVSX r32,r/m16 3/6 Move word to dword, sign-extend OperationDEST := SignExtend(SRC); DescriptionMOVSX reads the contents of the effective address or register as a byte or a word, sign-extends the value to the operand-size attribute of the instruction (16 or 32 bits), and stores the result in the destination register.Flags AffectedNoneProtected Mode Exceptions#GP(0) for an illegal memory operand effective address in the CS, DS, ES, FS or GS segments; #SS(0) for an illegal address in the SS segment; #PF(fault-code) for a page faultReal Address Mode ExceptionsInterrupt 13 if any part of the operand would lie outside of the effective address space from 0 to 0FFFFHVirtual 8086 Mode ExceptionsSame exceptions as in Real Address Mode; #PF(fault-code) for a page fault
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Chapter 17 -- 80386 Instruction Set |