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----------------------------------------------------------------
|                                                              |
|                                                              |
|                            Intel                             |
|                                                              |
|             88888      000      88888      666               |
|            8     8    0   0    8     8    6                  |
|            8     8   0   0 0   8     8   6                   |
|             88888    0  0  0    88888    666666              |
|            8     8   0 0   0   8     8   6     6             |
|            8     8    0   0    8     8   6     6             |
|             88888      000      88888     66666              |
|                                                              |
|         8086 MICROPROCESSOR Instruction Set Summary          |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                    _________    _________                    |
|                  _|         \__/         |_                  |
|             GND |_|1                   40|_| Vcc             |
|                  _|                      |_                  |
|       <--> AD14 |_|2                   39|_| AD15 <-->       |
|                  _|                      |_                  |
|       <--> AD13 |_|3                   38|_| A16/S3 -->      |
|                  _|                      |_                  |
|       <--> AD12 |_|4                   37|_| A17/S4 -->      |
|                  _|                      |_                  |
|       <--> AD11 |_|5                   36|_| A18/S5 -->      |
|                  _|                      |_                  |
|       <--> AD10 |_|6                   35|_| A19/S6 -->      |
|                  _|                      |_  ___             |
|        <--> AD9 |_|7                   34|_| BHE/S7 -->      |
|                  _|                      |_     __           |
|        <--> AD8 |_|8                   33|_| MN/MX <--       |
|                  _|                      |_                  |
|        <--> AD7 |_|9                   32|_| RD -->          |
|                  _|                      |_  __ ___          |
|        <--> AD6 |_|10       8086       31|_| RQ/GT0,HOLD <-->|
|                  _|                      |_  __ ___          |
|        <--> AD5 |_|11                  30|_| RQ/GT1,HOLD <-->|
|                  _|                      |_  ____ __         |
|        <--> AD4 |_|12                  29|_| LOCK,WR -->     |
|                  _|                      |_  __   __         |
|        <--> AD3 |_|13                  28|_| S2,M/IO -->     |
|                  _|                      |_  __    _         |
|        <--> AD2 |_|14                  27|_| S1,DT/R -->     |
|                  _|                      |_  __ ___          |
|        <--> AD1 |_|15                  26|_| S0,DEN  -->     |
|                  _|                      |_                  |
|        <--> AD0 |_|16                  25|_| QS0,ALE -->     |
|                  _|                      |_      ____        |
|         --> NMI |_|17                  24|_| QS1,INTA -->    |
|                  _|                      |_  ____            |
|        --> INTR |_|18                  23|_| TEST <--        |
|                  _|                      |_                  |
|         --> CLK |_|19                  22|_| READY <--       |
|                  _|                      |_                  |
|             GND |_|20                  21|_| RESET <--       |
|                   |______________________|                   |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|                                                              |
|Written by     Jonathan Bowen                                 |
|               Programming Research Group                     |
|               Oxford University Computing Laboratory         |
|               8-11 Keble Road                                |
|               Oxford OX1 3QD                                 |
|               England                                        |
|                                                              |
|               Tel +44-865-273840                             |
|                                                              |
|Created        October 1982                                   |
|Updated        April 1985                                     |
|Issue          1.3                Copyright (C) J.P.Bowen 1985|
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic          |ODITSZAPC|Description                      |
|------------------+---------+---------------------------------|
|AAA               |?---??*?*|ASCII Adjust for Add in AX       |
|AAD               |?---**?*?|ASCII Adjust for Divide in AX    |
|AAM               |?---**?*?|ASCII Adjust for Multiply in AX  |
|AAS               |?---??*?*|ASCII Adjust for Subtract in AX  |
|ADC d,s           |*---*****|Add with Carry                   |
|ADD d,s           |*---*****|Add                              |
|AND d,s           |*---**?**|Logical AND                      |
|CALL a            |---------|Call                             |
|CBW               |---------|Convert Byte to Word in AX       |
|CLC               |--------0|Clear Carry                      |
|CLD               |-0-------|Clear Direction                  |
|CLI               |--0------|Clear Interrupt                  |
|CMC               |--------*|Complement Carry                 |
|CMP d,s           |*---*****|Compare                          |
|CMPS              |*---*****|Compare memory at SI and DI      |
|CWD               |---------|Convert Word to Double in AX,DX  |
|DAA               |?---*****|Decimal Adjust for Add in AX     |
|DAS               |?---*****|Decimal Adjust for Subtract in AX|
|DEC d             |*---****-|Decrement                        |
|DIV s             |?---?????|Divide (unsigned) in AX(,DX)     |
|ESC s             |---------|Escape (to external device)      |
|HLT               |---------|Halt                             |
|IDIV s            |?---?????|Divide (signed) in AX(,DX)       |
|IMUL s            |*---????*|Multiply (signed) in AX(,DX)     |
|IN d,p            |---------|Input                            |
|INC d             |*---****-|Increment                        |
|INT               |--00-----|Interrupt                        |
|INTO              |--**-----|Interrupt on Overflow            |
|IRET              |*********|Interrupt Return                 |
|JB/JNAE a         |---------|Jump on Below/Not Above or Equal |
|JBE/JNA a         |---------|Jump on Below or Equal/Not Above |
|JCXZ a            |---------|Jump on CX Zero                  |
|JE/JZ a           |---------|Jump on Equal/Zero               |
|JL/JNGE a         |---------|Jump on Less/Not Greater or Equal|
|JLE/JNG a         |---------|Jump on Less or Equal/Not Greater|
|JMP a             |---------|Unconditional Jump               |
|JNB/JAE a         |---------|Jump on Not Below/Above or Equal |
|JNBE/JA a         |---------|Jump on Not Below or Equal/Above |
|JNE/JNZ a         |---------|Jump on Not Equal/Not Zero       |
|JNL/JGE a         |---------|Jump on Not Less/Greater or Equal|
|JNLE/JG a         |---------|Jump on Not Less or Equal/Greater|
|JNO a             |---------|Jump on Not Overflow             |
|JNP/JPO a         |---------|Jump on Not Parity/Parity Odd    |
|JNS a             |---------|Jump on Not Sign                 |
|JO a              |---------|Jump on Overflow                 |
|JP/JPE a          |---------|Jump on Parity/Parity Even       |
|JS a              |---------|Jump on Sign                     |
|LAHF              |---------|Load AH with 8080 Flags          |
|LDS r,s           |---------|Load pointer to DS               |
|LEA r,s           |---------|Load EA to register              |
|LES r,s           |---------|Load pointer to ES               |
|LOCK              |---------|Bus Lock prefix                  |
|LODS              |---------|Load memory at SI into AX        |
|LOOP a            |---------|Loop CX times                    |
|LOOPNZ/LOOPNE a   |---------|Loop while Not Zero/Not Equal    |
|LOOPZ/LOOPE a     |---------|Loop while Zero/Equal            |
|MOV d,s           |---------|Move                             |
|MOVS              |---------|Move memory at SI to DI          |
|MUL s             |*---????*|Multiply (unsigned) in AX(,DX)   |
|NEG d             |*---*****|Negate                           |
|NOP               |---------|No Operation (= XCHG AX,AX)      |
|NOT d             |---------|Logical NOT                      |
|OR d,s            |*---**?**|Logical inclusive OR             |
|OUT p,s           |---------|Output                           |
|POP d             |---------|Pop                              |
|POPF              |*********|Pop Flags                        |
|PUSH s            |---------|Push                             |
|PUSHF             |---------|Push Flags                       |
|RCL d,c           |*-------*|Rotate through Carry Left        |
|RCR d,c           |*-------*|Rotate through Carry Right       |
|REP/REPNE/REPNZ   |---------|Repeat/Repeat Not Equal/Not Zero |
|REPE/REPZ         |---------|Repeat Equal/Zero                |
|RET (s)           |---------|Return from call                 |
|ROL d,c           |-------- |Rotate Left                      |
|ROR d,c           |*-------*|Rotate Right                     |
|SAHF              |----*****|Store AH into 8080 Flags         |
----------------------------------------------------------------
----------------------------------------------------------------
|Mnemonic          |ODITSZAPC|Description                      |
|------------------+---------+---------------------------------|
|SAR d,c           |*---**?**|Shift Arithmetic Right           |
|SBB d,s           |*---*****|Subtract with Borrow             |
|SCAS              |*---*****|Scan memory at DI compared to AX |
|SEG r             |---------|Segment register                 |
|SHL/SAL d,c       |*---**?**|Shift logical/Arithmetic Left    |
|SHR d,c           |*---**?**|Shift logical Right              |
|STC               |--------1|Set Carry                        |
|STD               |-0-------|Set Direction                    |
|STI               |--0------|Set Interrupt                    |
|STOS              |---------|Store AX into memory at DI       |
|SUB d,s           |*---*****|Subtract                         |
|TEST d,s          |*---**?**|AND function to flags            |
|WAIT              |---------|Wait                             |
|XCHG r(,d)        |---------|Exchange                         |
|XLAT              |---------|Translate byte to AL             |
|XOR d,s           |*---**?**|Logical Exclusive OR             |
|------------------+---------+---------------------------------|
|                  |-*01?    |Unaff/affected/reset/set/unknown |
| OF               |O        |Overflow Flag (Bit 11)           |
| DF               | D       |Direction Flag (Bit 10)          |
| IF               |  I      |Interrupt enable Flag (Bit 9)    |
| TF               |   T     |Trap Flag (Bit 8)                |
| SF               |    S    |Sign Flag (Bit 7)                |
| ZF               |     Z   |Zero Flag (Bit 6)                |
| AF               |      A  |Auxilary carry Flag (Bit 4)      |
| PF               |       P |Parity Flag (Bit 2)              |
| CF               |        C|Carry Flag (Bit 0)               |
|------------------+-------------------------------------------|
|ALIGN             |Align to word boundary                     |
|ASSUME sr:sy(,...)|Assume segment register name(s)            |
|ASSUME NOTHING    |Remove all former assumptions              |
|DB     e(,...)    |Define Byte(s)                             |
|DBS    e          |Define Byte Storage                        |
|DD     e(,...)    |Define Double Word(s)                      |
|DDS    e          |Define Double Word Storage                 |
|DW     e(,...)    |Define Word(s)                             |
|DWS    e          |Define Word Storage                        |
|EXT    (sr:)sy(t) |External(s)(t=ABS/BYTE/DWORD/FAR/NEAR/WORD)|
|LABEL  t          |Label          (t=BYTE/DWORD/FAR/NEAR/WORD)|
|PROC   t          |Procedure        (t=FAR/NEAR, default NEAR)|
|------------------+-------------------------------------------|
| ABS              |Absolute value of operand                  |
| BYTE             |Byte type operation                        |
| DWORD            |Double Word operation                      |
| FAR              |IP and CS registers altered                |
| HIGH             |High-order 8 bits of 16-bit value          |
| LENGTH           |Number of basic units                      |
| LOW              |Low-order 8 bit of 16-bit value            |
| NEAR             |Only IP register need be altered           |
| OFFSET           |Offset portion of an address               |
| PTR              |Create a variable or label                 |
| SEG              |Segment of address                         |
| SHORT            |One byte for a JMP operation               |
| SIZE             |Number of bytes defined by statement       |
| THIS             |Create a variable/label of specified type  |
| TYPE             |Number of bytes in the unit defined        |
| WORD             |Word operation                             |
|------------------+-------------------------------------------|
| AX BX CX DX      |Accumulator/Base/Count/Data registers      |
| AL BL CL DL      |Low byte of general registers              |
| AH BH CH DH      |High byte of general registers             |
| SP BP            |Stack/Base Pointer registers               |
| SI DI            |Source/Destination Index registers         |
| CS DS SS ES      |Code/Data/Stack/Extra Segment registers    |
| IP               |Instruction Pointer register               |
|------------------+-------------------------------------------|
| a                |Address                                    |
| c                |Count                                      |
| d                |Destination                                |
| e                |Expression or string                       |
| p                |I/O port                                   |
| r                |Register                                   |
| s                |Source                                     |
| sr               |Segment register (CS,DS,SS,ES)             |
| sy               |Symbol                                     |
| t                |Type of symbol                             |
----------------------------------------------------------------


 


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