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M80C286 Datasheet(PDF) 4 Page - Intel Corporation |
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M80C286 Datasheet(HTML) 4 Page - Intel Corporation |
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4 / 60 page  M80C286 Two-operand instructions (eg MOV and ADD) are usually three to six bytes long Memory to memory operations are provided by a special class of string instructions requiring one to three bytes For de- tailed instruction formats and encodings refer to the instruction set summary at the end of this document For detailed operation and usage of each instruc- tion see Appendix B of the 8028680287 Program- mer’s Reference Manual (Order No 210498) Table 2 Instruction Set GENERAL PURPOSE MOV Move byte or word PUSH Push word onto stack POP Pop word off stack PUSHA Push all registers on stack POPA Pop all registers from stack XCHG Exchange byte or word XLAT Translate byte INPUTOUTPUT IN Input byte or word OUT Output byte or word ADDRESS OBJECT LEA Load effective address LDS Load pointer using DS LES Load pointer using ES FLAG TRANSFER LAHF Load AH register from flags SAHF Store AH register in flags PUSHF Push flags onto stack POPF Pop flags off stack Data Transfer Instructions MOVS Move byte or word string INS Input bytes or word string OUTS Output bytes or word string CMPS Compare byte or word string SCAS Scan byte or word string LODS Load byte or word string STOS Store byte or word string REP Repeat REPEREPZ Repeat while equalzero REPNEREPNZ Repeat while not equalnot zero String Instructions ADDITION ADD Add byte or word ADC Add byte or word with carry INC Increment byte or word by 1 AAA ASCII adjust for addition DAA Decimal adjust for addition SUBTRACTION SUB Subtract byte or word SBB Subtract byte or word with borrow DEC Decrement byte or word by 1 NEG Negate byte or word CMP Compare byte or word AAS ASCII adjust for subtraction DAS Decimal adjust for subtraction MULTIPLICATION MUL Multiple byte or word unsigned IMUL Integer multiply byte or word AAM ASCII adjust for multiply DIVISION DIV Divide byte or word unsigned IDIV Integer divide byte or word AAD ASCII adjust for division CBW Convert byte to word CWD Convert word to doubleword Arithmetic Instructions LOGICALS NOT ‘‘Not’’ byte or word AND ‘‘And’’ byte or word OR ‘‘Inclusive or’’ byte or word XOR ‘‘Exclusive or’’ byte or word TEST ‘‘Test’’ byte or word SHIFTS SHLSAL Shift logicalarithmetic left byte or word SHR Shift logical right byte or word SAR Shift arithmetic right byte or word ROTATES ROL Rotate left byte or word ROR Rotate right byte or word RCL Rotate through carry left byte or word RCR Rotate through carry right byte or word ShiftRotate Logical Instructions 4 |
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