Intel Instruction Set pages


1 - Intel 8086 Family Architecture

2 - Instruction Clock Cycle Calculation 

3 -  8088/8086 Effective Address (EA) Calculation 

4 - Task State Calculation

5 - FLAGS - Intel 8086 Family Flags Register

6 - MSW  - Machine Status Word (286+ only) 

7 - 8086/80186/80286/80386/80486 Instruction Set:

     AAA - Ascii Adjust for Addition
     AAD - Ascii Adjust for Division
     AAM - Ascii Adjust for Multiplication
     AAS - Ascii Adjust for Subtraction 
     ADC - Add With Carry 
     ADD - Arithmetic Addition
     AND - Logical And
     ARPL - Adjusted Requested Privilege Level of Selector (286+ PM)
     BOUND - Array Index Bound Check (80188+) 
     BSF - Bit Scan Forward (386+)
     BSR - Bit Scan Reverse (386+) 
     BSWAP - Byte Swap (486+) 
     BT - Bit Test (386+) 
     BTC - Bit Test with Compliment (386+)
     BTR - Bit Test with Reset (386+) 
     BTS - Bit Test and Set  (386+) 
     CALL - Procedure Call
     CBW - Convert Byte to Word 
     CDQ - Convert Double to Quad (386+)
     CLC - Clear Carry
     CLD - Clear Direction Flag 
     CLI - Clear Interrupt Flag (disable) 
     CLTS - Clear Task Switched Flag (286+ privileged)
     CMC - Complement Carry Flag
     CMP - Compare
     CMPS - Compare String (Byte, Word or Doubleword) 
     CMPXCHG - Compare and Exchange 
     CWD - Convert Word to Doubleword 
     CWDE - Convert Word to Extended Doubleword (386+)
     DAA - Decimal Adjust for Addition
     DAS - Decimal Adjust for Subtraction 
     DEC - Decrement
     DIV - Divide 
     ENTER - Make Stack Frame  (80188+) 
     ESC - Escape 
     HLT - Halt CPU 
     IDIV - Signed Integer Division 
     IMUL - Signed Multiply 
     IN - Input Byte or Word From Port
     INC - Increment
     INS - Input String from Port  (80188+) 
     INT - Interrupt
     INTO - Interrupt on Overflow 
     INVD - Invalidate Cache  (486+)
     INVLPG - Invalidate Translation Look-Aside Buffer Entry (486+) 
     IRET/IRETD - Interrupt Return
     Jxx - Jump Instructions Table
     JCXZ/JECXZ - Jump if Register (E)CX is Zero
     JMP - Unconditional Jump 
     LAHF - Load Register AH From Flags 
     LAR - Load Access Rights (286+ protected)
     LDS - Load Pointer Using DS
     LEA - Load Effective Address 
     LEAVE - Restore Stack for Procedure Exit (80188+)
     LES - Load Pointer Using ES
     LFS - Load Pointer Using FS (386+) 
     LGDT - Load Global Descriptor Table (286+ privileged)
     LIDT - Load Interrupt Descriptor Table (286+ privileged) 
     LGS - Load Pointer Using GS (386+) 
     LLDT - Load Local Descriptor Table (286+ privileged) 
     LMSW - Load Machine Status Word (286+ privileged)
     LOCK - Lock Bus
     LODS - Load String (Byte, Word or Double)
     LOOP - Decrement CX and Loop if CX Not Zero
     LOOPE/LOOPZ - Loop While Equal / Loop While Zero 
     LOOPNZ/LOOPNE - Loop While Not Zero / Loop While Not Equal 
     LSL - Load Segment Limit (286+ protected)
     LSS - Load Pointer Using SS (386+) 
     LTR - Load Task Register (286+ privileged) 
     MOV - Move Byte or Word
     MOVS - Move String (Byte or Word)
     MOVSX - Move with Sign Extend (386+) 
     MOVZX - Move with Zero Extend (386+) 
     MUL - Unsigned Multiply
     NEG - Two's Complement Negation
     NOP - No Operation (90h) 
     NOT - One's Compliment Negation (Logical NOT)
     OR - Inclusive Logical OR
     OUT - Output Data to Port
     OUTS - Output String to Port  (80188+) 
     POP - Pop Word off Stack 
     POPA/POPAD - Pop All Registers onto Stack  (80188+)
     POPF/POPFD - Pop Flags off Stack 
     PUSH - Push Word onto Stack
     PUSHA/PUSHAD - Push All Registers onto Stack  (80188+) 
     PUSHF/PUSHFD - Push Flags onto Stack 
     RCL - Rotate Through Carry Left
     RCR - Rotate Through Carry Right 
     REP - Repeat String Operation
     REPE/REPZ - Repeat Equal / Repeat Zero 
     REPNE/REPNZ - Repeat Not Equal / Repeat Not Zero 
     RET/RETF - Return From Procedure 
     ROL - Rotate Left
     ROR - Rotate Right 
     SAHF - Store AH Register into FLAGS
     SAL/SHL - Shift Arithmetic Left / Shift Logical Left 
     SAR - Shift Arithmetic Right 
     SBB - Subtract with Borrow/Carry 
     SCAS - Scan String  (Byte, Word or Doubleword) 
     SETAE/SETNB - Set if Above or Equal / Set if Not Below (386+)
     SETB/SETNAE - Set if Below / Set if Not Above or Equal (386+)
     SETBE/SETNA - Set if Below or Equal / Set if Not Above (386+)
     SETE/SETZ - Set if Equal / Set if Zero (386+)
     SETNE/SETNZ - Set if Not Equal / Set if Not Zero (386+)
     SETL/SETNGE - Set if Less / Set if Not Greater or Equal (386+) 
     SETGE/SETNL - Set if Greater or Equal / Set if Not Less (386+) 
     SETLE/SETNG - Set if Less or Equal / Set if Not greater or Equal (386+)
     SETG/SETNLE - Set if Greater / Set if Not Less or Equal (386+) 
     SETS - Set if Signed (386+)
     SETNS - Set if Not Signed (386+) 
     SETC - Set if Carry (386+) 
     SETNC - Set if Not Carry (386+)
     SETO - Set if Overflow (386+)
     SETNO - Set if Not Overflow (386+) 
     SETP/SETPE - Set if Parity / Set if Parity Even  (386+)
     SETNP/SETPO - Set if No Parity / Set if Parity Odd (386+)
     SGDT - Store Global Descriptor Table (286+ privileged) 
     SIDT - Store Interrupt Descriptor Table (286+ privileged)
     SHL - Shift Logical Left 
     SHR - Shift Logical Right
     SHLD/SHRD - Double Precision Shift (386+)
     SLDT - Store Local Descriptor Table (286+ privileged)
     SMSW - Store Machine Status Word (286+ privileged) 
     STC - Set Carry
     STD - Set Direction Flag 
     STI - Set Interrupt Flag  (Enable Interrupts)
     STOS - Store String  (Byte, Word or Doubleword)
     STR - Store Task Register (286+ privileged)
     SUB - Subtract 
     TEST - Test For Bit Pattern
     VERR - Verify Read (286+ protected)
     VERW - Verify Write (286+ protected) 
     WAIT/FWAIT - Event Wait
     WBINVD - Write-Back and Invalidate Cache (486+)
     XCHG - Exchange
     XLAT/XLATB - Translate 
     XOR - Exclusive OR

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Updated: 10.2.1997.
MKsa