CSC231 Pentium Instructions with Op-Codes
--D. Thiebaut 13:55, 15 October 2010 (UTC)
Taken from http://mprolab.teipir.gr/vivlio80X86/pentium.txt
The Complete Pentium Instruction Set Table
(32 Bit Addressing Mode Only)
by Sang Cho
**********************************************
Explanation of the Notation used in this Table
**********************************************
/digit -- A digit between 0 and 7 indicates that the ModR/M byte of the instruction uses
only the r/m (register or memory) operand. The reg field contains the digit
that provides an extension to the instruction's opcode.
/r -- Indicates that the ModR/M byte of the instruction contains both a register operand
and an r/m operand.
cb -- A relative byte offset from the next instruction for JMP, CALL etc.
cw -- A relative word offset from the next instruciton for JMP, CALL etc.
cd -- A relative doubleword offset from the next instruction for JMP, CALL etc.
cp -- An absolute far pointer for JMP, CALL etc.
ib, iw, id
-- 1-byte (ib), 2-byte (iw), or 4-byte (id) immediate operand
+rb, +rw, +rd
-- register code, from 0 through 7, added to an opcode byte.
rb rw rd
----------------------
AL = 0 AX = 0 EAX = 0
CL = 1 CX = 1 ECX = 1
DL = 2 DX = 2 EDX = 2
BL = 3 BX = 3 EBX = 3
AH = 4 SP = 4 ESP = 4
CH = 5 BP = 5 EBP = 5
DH = 6 SI = 6 ESI = 6
BH = 7 DI = 7 EDI = 7
+i -- A number used in floating-point instructions when one of the operands is ST(i) from
the FPU register stack.
rel8 -- A relative address in the range from -128 to 127 bytes from the end of the instruction.
rel16 and rel32
-- A relative address within the same code segment as the instruction assembled.
ptr16:16 and ptr16:32
-- A far pointer, typically in a code segment different from that of the instruction.
r8 -- One of the byte general-purpose registers.
r16 -- One of the word general-purpose registers.
r32 -- One of the doubleword general-purpose registers.
imm8 -- An immediate byte value.
imm16 -- An immediate word value.
imm32 -- An immediate doubleword value.
r/m8 -- A byte general-purpose register, or a byte from memory.
r/m16 -- A word general-purpose register, or a word memory operand.
r/m32 -- A doubleword general-purpose register, or a doubleword memory operand.
m -- A 16- or 32-bit operand in memory.
m8 -- A byte operand in memory, pointed to by the DS:(E)SI or ES:(E)DI registers.
Used with the string instructions and the XLAT instruction.
m16 -- A word operand in memory, pointed to by the DS:(E)SI or ES:(E)DI registers.
Used only with the string instructions.
m32 -- A doubleword operand in memory, pointed to by the DS:(E)SI or ES:(E)DI registers.
Used only with the string instructions.
m64 -- A memory quadword operand in memory. Used only with the CMPXCHG8B instruction.
m16:16, m16:32
-- A memory operand containing a far pointer composed of two numbers.
The number to the left of the colon corresponds to the pointer's segment selector.
The number to the right corresponds to its offset.
m16&32, m16&16, m32&32
-- A memory operand consisting of data item pairs whose
sizes are indicated on the left and the right side of the ampersand.
All memory addressing modes are allowed. The m16&16 and m32&32 operands are used
by the BOUND instruction to provide an operand containing an upper and lower bounds
for array indices. The m16&32 operand is used by LIDT and LGDT to provide
a word with which to load the limit field, and a doubleword with which to load
the base field of the corresponding GDTR and IDTR registers.
moffs8, moffs16, moffs32
-- A simple memory variable (memory offset) of type byte,
word, or doubleword used by some variants of the MOV instruction.
The actual address is given by a simple offset relative to the segment base.
No ModR/M byte is used in the instruction. The number shown with moffs indicates
its size, which is determined by the address-size attribute of the instruction.
Sreg -- A segment register. The segment register bit assignments are ES=0, CS=1, SS=2,
DS=3, FS=4, and GS=5.
m32real, m64real, m80real
-- A single-, double-, and extended-real floating-point operand in memory.
m16int, m32int, m64int
-- A word-, short-, and long-integer floating-point operand in memory.
ST or ST(0)
-- The top element of the FPU register stack.
ST(i) -- The i th element from the top of the FPU register stack. (i = 0 through 7)
mm -- An MMX register. The 64-bit MMX registers are: MM0 through MM7.
mm/m32 -- The low order 32 bits of an MMX register or a 32-bit memory operand.
mm/m64 -- An MMX register or a 64-bit memory operand.
Alphabetical Listing
===============================================================================
Opcode,Data Instruction Explanation
-------------------------------------------------------------------------------
37 AAA ASCII adjust AL after addition
D5 0A AAD ASCII adjust AX before division
D4 0A AAM ASCII adjust AX after multiplication
3F AAS ASCII adjust AL after subtraction
14 ib ADC AL,imm8 Add with carry
15 id ADC EAX,imm32 Add with carry
80 /2 ib ADC r/m8,imm8 Add with carry
81 /2 id ADC r/m32,imm32 Add with carry
83 /2 ib ADC r/m32,imm8 Add with carry
10 /r ADC r/m8,r8 Add with carry
11 /r ADC r/m32,r32 Add with carry
12 /r ADC r8,r/m8 Add with carry
13 /r ADC r32,r/m32 Add with carry
04 ib ADD AL,imm8 Add
05 id ADD EAX,imm32 Add
80 /0 ib ADD r/m8,imm8 Add
81 /0 id ADD r/m32,imm32 Add
83 /0 ib ADD r/m32,imm8 Add
00 /r ADD r/m8,r8 ADD
01 /r ADD r/m32,r32 ADD
02 /r ADD r8,r/m8 ADD
03 /r ADD r32,r/m32 ADD
24 ib AND AL,imm8 AND
25 id AND EAX,imm32 AND
80 /4 ib AND r/m8,imm8 AND
81 /4 id AND r/m32,imm32 AND
83 /4 ib AND r/m32,imm8 AND
20 /r AND r/m8,r8 AND
21 /r AND r/m32,r32 AND
22 /r AND r8,r/m8 AND
23 /r AND r32,r/m32 AND
63 /r ARPL r/m16,r16 Adjust Request Privilege Level of Sel.
62 /r BOUND r32,m32&32 Check Array Index Against Bounds
0F BC /r BSF r32,r/m32 Bit scan forward on r/m32
0F BD /r BSR r32,r/m32 Bit scan reverse on r/m32
0F C8+rd BSWAP r32 Reverses the byte order of a r32
0F A3 /r BT r/m32,r32 Bit Test
0F BA /4 ib BT r/m32,imm8 Bit Test
0F BB /r BTC r/m32,r32 Bit Test and Complement
0F BA /7 ib BTC r/m32,imm8 Bit Test and Complement
0F B3 /r BTR r/m32,r32 Bit Test and Clear
0F BA /6 ib BTR r/m32,imm8 Bit Test and Clear
0F AB /r BTS r/m32,r32 Bit Test and Set
0F BA /5 ib BTS r/m32,imm8 Bit Test and Set
E8 cd CALL rel32 Call near, rel to n.inst
FF /2 CALL r/m32 Call near, abs.ind.add. given in r/m32
9A cp CALL ptr16:32 Call far, abs.add. given in operand
FF /3 CALL m16:32 Call far, abs.ind.add. given in m16:32
98 CBW Convert Byte to Word
99 CWD Convert Word to Doubleword
99 CDQ Convert Doubleword to Quadword
F8 CLC Clear CF flag
FC CLD Clear DF flag
FA CLI Clear interrupt flag
0F 06 CLTS Clear Task-Switched Flag in Control Reg. Zero
F5 CMC Complement CF flag
0F 47 /r CMOVA r32,r/m32 Move if above
0F 43 /r CMOVAE r32,r/m32 Move if above or equal
0F 42 /r CMOVB r32,r/m32 Move if below
0F 46 /r CMOVBE r32,r/m32 Move if below or equal
0F 42 /r CMOVC r32,r/m32 Move if carry
0F 44 /r CMOVE r32,r/m32 Move if equal
0F 4F /r CMOVG r32,r/m32 Move if greater
0F 4D /r CMOVGE r32,r/m32 Move if greater or equal
0F 4C /r CMOVL r32,r/m32 Move if less
0F 4E /r CMOVLE r32,r/m32 Move if less or equal
0F 46 /r CMOVNA r32,r/m32 Move if not above
0F 42 /r CMOVNAE r32,r/m32 Move if not above or equal
0F 43 /r CMOVNB r32,r/m32 Move if not below
0F 47 /r CMOVNBE r32,r/m32 Move if not below or equal
0F 43 /r CMOVNC r32,r/m32 Move if not carry
0F 45 /r CMOVNE r32,r/m32 Move if not equal
0F 4E /r CMOVNG r32,r/m32 Move if not greater
0F 4C /r CMOVNGE r32,r/m32 Move if not greater or equal
0F 4D /r CMOVNL r32,r/m32 Move if not less
0F 4F /r CMOVNLE r32,r/m32 Move if not less or equal
0F 41 /r CMOVNO r32,r/m32 Move if not overflow
0F 4B /r CMOVNP r32,r/m32 Move if not parity
0F 49 /r CMOVNS r32,r/m32 Move if not sign
0F 45 /r CMOVNZ r32,r/m32 Move if not zero
0F 40 /r CMOVO r32,r/m32 Move if overflow
0F 4A /r CMOVP r32,r/m32 Move if parity
0F 4A /r CMOVPE r32,r/m32 Move if parity even
0F 4B /r CMOVPO r32,r/m32 Move if parity odd
0F 48 /r CMOVS r32,r/m32 Move if sign
0F 44 /r CMOVZ r32,r/m32 Move if zero
3C ib CMP AL,imm8 Compare
3D id CMP EAX,imm32 Compare
80 /7 ib CMP r/m8,imm8 Compare
81 /7 id CMP r/m32,imm32 Compare
83 /7 ib CMP r/m32,imm8 Compare
38 /r CMP r/m8,r8 Compare
39 /r CMP r/m32,r32 Compare
3A /r CMP r8,r/m8 Compare
3B /r CMP r32,r/m32 Compare
A6 CMPSB Compare byte at DS:(E)SI with ES:(E)DI
A7 CMPSD Compare dw at DS:(E)SI with ES:(E)DI
0F B0 /r CMPXCHG r/m8,r8 Compare and Exchange
0F B1 /r CMPXCHG r/m32,r32 Compare and Exchange
0F C7 /1 m64 CMPXCHG8B m64 Compare and Exchange
0F A2 CPUID EAX := Processor id.info.
27 DAA Decimal adjust AL after addition
2F DAS Decimal adjust AL after subtraction
FE /1 DEC r/m8 Decrement r/m8 by 1
FF /1 DEC r/m32 Decrement r/m32 by 1
48+rd DEC r32 Decrement r32 by 1
F6 /6 DIV r/m8 Unsigned divide AX by r/m8
F7 /6 DIV r/m16 Unsigned divide DX:AX by r/m16
F7 /6 DIV r/m32 Unsigned divide EDX:EAX by r/m32
0F 77 EMMS Set the FP tag word to empty
C8 iw 00 ENTER imm16,0 Create a stack frame for a procedure
C8 iw 01 ENTER imm16,1 Create a nested stack frame for a proc.
C8 iw ib ENTER imm16,imm8 Create a nested stack frame for a proc.
D9 F0 F2XM1 Replace ST(0) with 2**ST(0) - 1
D9 E1 FABS Replace ST(0) with its absolute value
D8 /0 FADD m32real Add m32real to ST(0) and s.r. in ST(0)
DC /0 FADD m64real Add m64real to ST(0) and s.r.in ST(0)
D8 C0+i FADD ST(0),ST(i) Add ST(0) to ST(i) and s.r.in ST(0)
DC C0+i FADD ST(i),ST(0) Add ST(i) to ST(0) and s.r. in ST(i)
DE C0+i FADDP ST(i),ST(0) Add ST(0) to ST(i), s.r.in ST(i),pop r.stack
DE C1 FADDP Add ST(0) to ST(1), s.r.in ST(1),pop r.stack
DA /0 FIADD m32int Add m32int to ST(0) and s.r.in ST(0)
DE /0 FIADD m16int Add m16int to ST(0) and s.r.in ST(0)
DF /4 FBLD m80bcd Convert m80BCD to real and push
DF /6 FBSTP m80bcd Store ST(0) in m80bcd and pop ST(0)
D9 E0 FCHS Complements sign of ST(0)
9B DB E2 FCLEX Clear f.e.f. after checking for ..
DB E2 FNCLEX Clear f.e.f. without checking for ..
DA C0+i FCMOVB ST(0),ST(i) Move if below
DA C8+i FCMOVE ST(0),ST(i) Move if equal
DA D0+i FCMOVBE ST(0),ST(i) Move if below or equal
DA D8+i FCMOVU ST(0),ST(i) Move if unordered
DB C0+i FCMOVNB ST(0),ST(i) Move if not below
DB C8+i FCMOVNE ST(0),ST(i) Move if not equal
DB D0+i FCMOVNBE ST(0),ST(i) Move if not below or equal
DB D8+i FCMOVNU ST(0),ST(i) Move if not unordered
D8 /2 FCOM m32real Compare ST(0) with m32real.
DC /2 FCOM m64real Compare ST(0) with m64real.
D8 D0+i FCOM ST(i) Compare ST(0) with ST(i).
D8 D1 FCOM Compare ST(0) with ST(1).
D8 /3 FCOMP m32real Compare ST(0) with m32real,pop r.stack.
DC /3 FCOMP m64real Compare ST(0) with m64real,pop r.stack.
D8 D8+i FCOMP ST(i) Compare ST(0) with ST(i), pop
D8 D9 FCOMP Compare ST(0) with ST(1), pop
DE D9 FCOMPP Compare ST(0) with ST(1), pop pop
DB F0+i FCOMI ST,ST(i) Compare ST(0) with ST(i), set status flags
DF F0+i FCOMIP ST,ST(i) Compare ST(0) with ST(i), set s.f. ,pop
DB E8+i FUCOMI ST,ST(i) Compare ST(0) with ST(i), check o.v.set s.f.
DF E8+i FUCOMIP ST,ST(i) Compare ST(0) with ST(i), check ovssf pop
D9 FF FCOS Replace ST(0) with its cosine
D9 F6 FDECSTP Decrement TOP field in FPU status word.
D8 /6 FDIV m32real Divide ST(0) by m32real and s.r.in ST(0)
DC /6 FDIV m64real Divide ST(0) by m64real and s.r.in ST(0)
D8 F0+i FDIV ST(0),ST(i) Divide ST(0) by ST(i) and s.r.in ST(0)
DC F8+i FDIV ST(i),ST(0) Divide ST(i) by ST(0) and s.r.in ST(i)
DE F8+i FDIVP ST(i),ST(0) Divide ST(i) by ST(0), s.r.in ST(i) pop
DE F9 FDIVP Divide ST(1) by ST(0), s.r.in ST(1) pop
DA /6 FIDIV m32int Divide ST(0) by m32int and s.r.in ST(0)
DE /6 FIDIV m16int Divide ST(0) by m64int and s.r.in ST(0)
D8 /7 FDIVR m32real Divide m32real by ST(0) and s.r.in ST(0)
DC /7 FDIVR m64real Divide m64real by ST(0) and s.r.in ST(0)
D8 F8+i FDIVR ST(0),ST(i) Divide ST(i) by ST(0) and s.r.in ST(0)
DC F0+i FDIVR ST(i),ST(0) Divide ST(0) by ST(i) and s.r.in ST(i)
DE F0+i FDIVRP ST(i),ST(0) Divide ST(0) by ST(i), s.r.in ST(i) pop
DE F1 FDIVRP Divide ST(0) by ST(1), s.r.in ST(1) pop
DA /7 FIDIVR m32int Divide m32int by ST(0) and s.r.in ST(0)
DE /7 FIDIVR m16int Divide m64int by ST(0) and s.r.in ST(0)
DD C0+i FFREE ST(i) Sets tag for ST(i) to empty
DE /2 FICOM m16int Compare ST(0) with m16int
DA /2 FICOM m32int Compare ST(0) with m32int
DE /3 FICOMP m16int Compare ST(0) with m16int and pop
DA /3 FICOMP m32int Compare ST(0) with m32int and pop
DF /0 FILD m16int Push m16int
DB /0 FILD m32int Push m32int
DF /5 FILD m64int Push m64int
D9 F7 FINCSTP Increment the TOP field FPU status r.
9B DB E3 FINIT Initialize FPU after ...
DB E3 FNINIT Initialize FPU without ...
DF /2 FIST m16int Store ST(0) in m16int
DB /2 FIST m32int Store ST(0) in m32int
DF /3 FISTP m16int Store ST(0) in m16int and pop
DB /3 FISTP m32int Store ST(0) in m32int and pop
DF /7 FISTP m64int Store ST(0) in m64int and pop
D9 /0 FLD m32real Push m32real
DD /0 FLD m64real Push m64real
DB /5 FLD m80real Push m80real
D9 C0+i FLD ST(i) Push ST(i)
D9 E8 FLD1 Push +1.0
D9 E9 FLDL2T Push log2 10
D9 EA FLDL2E Push log2 e
D9 EB FLDPI Push pi
D9 EC FLDLG2 Push log10 2
D9 ED FLDLN2 Push loge 2
D9 EE FLDZ Push +0.0
D9 /5 FLDCW m2byte Load FPU control word from m2byte
D9 /4 FLDENV m14/28byte Load FPU environment from m14/m28
D8 /1 FMUL m32real Multiply ST(0) by m32real and s.r.in ST(0)
DC /1 FMUL m64real Multiply ST(0) by m64real and s.r.in ST(0)
D8 C8+i FMUL ST(0),ST(i) Multiply ST(0) by ST(i) and s.r.in ST(0)
DC C8+i FMUL ST(i),ST(0) Multiply ST(i) by ST(0) and s.r.in ST(i)
DE C8+i FMULP ST(i),ST(0) Multiply ST(i) by ST(0), s.r.in ST(i) pop
DE C9 FMULP Multiply ST(1) by ST(0), s.r.in ST(1) pop
DA /1 FIMUL m32int Multiply ST(0) by m32int and s.r.in ST(0)
DE /1 FIMUL m16int Multiply ST(0) by m16int and s.r.in ST(0)
D9 D0 FNOP No operation is performed
D9 F3 FPATAN Repalces ST(1) with arctan(ST(1)/ST(0)) pop
D9 F8 FPREM Replaces ST(0) with rem (ST(0)/ST(1))
D9 F5 FPREM1 Replaces ST(0) with IEEE rem(ST(0)/ST(1))
D9 F2 FPTAN Replaces ST(0) with its tangent push 1.0
D9 FC FRNDINT Round ST(0) to an integer
DD /4 FRSTOR m94/108byte Load FPU status from m94 or m108 byte
9B DD /6 FSAVE m94/108byte Store FPU status to m94 or m108
DD /6 FNSAVE m94/108byte Store FPU environment to m94 or m108
D9 FD FSCALE Scale ST(0) by ST(1)
D9 FE FSIN Replace ST(0) with its sine
D9 FB FSINCOS Compute sine and consine of ST(0) s push c
D9 FA FSQRT square root of ST(0)
D9 /2 FST m32real Copy ST(0) to m32real
DD /2 FST m64real Copy ST(0) to m64real
DD D0+i FST ST(i) Copy ST(0) to ST(i)
D9 /3 FSTP m32real Copy ST(0) to m32real and pop
DD /3 FSTP m64real Copy ST(0) to m64real and pop
DB /7 FSTP m80real Copy ST(0) to m80real and pop
DD D8+i FSTP ST(i) Copy ST(0) to ST(i) and pop
9B D9 /7 FSTCW m2byte Store FPU control word
D9 /7 FNSTCW m2byte Store FPU control word without
9B D9 /6 FSTENV m14/28byte Store FPU environment
D9 /6 FNSTENV m14/28byte Store FPU env without
9B DD /7 FSTSW m2byte Store FPU status word at m2byte after
9B DF E0 FSTSW AX Store FPU status word in AX after
DD /7 FNSTSW m2byte Store FPU status word at m2byte without
DF E0 FNSTSW AX Store FPU status word in AX without
D8 /4 FSUB m32real Sub m32real from ST(0) and s.r.in ST(0)
DC /4 FSUB m64real Sub m64real from ST(0) and s.r.in ST(0)
D8 E0+i FSUB ST(0),ST(i) Sub ST(i) from ST(0) and s.r.in ST(0)
DC E8+i FSUB ST(i),ST(0) Sub ST(0) from ST(i) and s.r.in ST(i)
DE E8+i FSUBP ST(i),ST(0) Sub ST(0) from ST(i), s.r.in ST(i) pop
DE E9 FSUBP Sub ST(0) from ST(1), s.r.in ST(1) pop
DA /4 FISUB m32int Sub m32int from ST(0) and s.r.in ST(0)
DE /4 FISUB m16int Sub m16int from ST(0) and s.r.in ST(0)
D8 /5 FSUBR m32real Sub ST(0) from m32real and s.r.in ST(0)
DC /5 FSUBR m64real Sub ST(0) from m64real and s.r.in ST(0)
D8 E8+i FSUBR ST(0),ST(i) Sub ST(0) from ST(i) and s.r.in ST(0)
DC E0+i FSUBR ST(i),ST(0) Sub ST(i) from ST(0) and s.r.in ST(i)
DE E0+i FSUBRP ST(i),ST(0) Sub ST(i) from ST(0), s.r. in ST(i) pop
DE E1 FSUBRP Sub ST(1) from ST(0), s.r.in ST(1) pop
DA /5 FISUBR m32int Sub ST(0) from m32int and s.r.in ST(0)
DE /5 FISUBR m16int Sub ST(0) from m16int and s.r.in ST(0)
D9 E4 FTST Compare ST(0) with 0.0
DD E0+i FUCOM ST(i) Compare ST(0) with ST(i)
DD E1 FUCOM Compare ST(0) with ST(1)
DD E8+i FUCOMP ST(i) Compare ST(0) with ST(i) and pop
DD E9 FUCOMP Compare ST(0) with ST(1) and pop
DA E9 FUCOMPP Compare ST(0) with ST(1) and pop pop
D9 E5 FXAM Classify value or number in ST(0)
D9 C8+i FXCH ST(i) Exchange ST(0) and ST(i)
D9 C9 FXCH Exchange ST(0) and ST(1)
D9 F4 FXTRACT Seperate value in ST(0) exp. and sig.
D9 F1 FYL2X Replace ST(1) with ST(1)*log2ST(0) and pop
D9 F9 FYL2XP1 Replace ST(1) with ST(1)*log2(ST(0)+1) pop
F4 HLT Halt
F6 /7 IDIV r/m8 Divide
F7 /7 IDIV r/m32 Divide
F6 /5 IMUL r/m8 Multiply
F7 /5 IMUL r/m32 Multiply
0F AF /r IMUL r32,r/m32 Multiply
6B /r ib IMUL r32,r/m32,imm8 Multiply
6B /r ib IMUL r32,imm8 Multiply
69 /r id IMUL r32,r/m32,imm32 Multiply
69 /r id IMUL r32,imm32 Multiply
E4 ib IN AL,imm8 Input byte from imm8 I/O port address into AL
E5 ib IN EAX,imm8 Input byte from imm8 I/O port address into EAX
EC IN AL,DX Input byte from I/O port in DX into AL
ED IN EAX,DX Input doubleword from I/O port in DX into EAX
FE /0 INC r/m8 Increment 1
FF /0 INC r/m32 Increment 1
40+rd INC r32 Increment register by 1
6C INS m8 Input byte from I/O(DX) into ES:(E)DI
6D INS m32 Input dw from I/O(DX) into ES:(E)DI
CC INT 3 Interrupt 3--trap to debugger
CD ib INT imm8 Interrupt vector number (imm8)
CE INTO Interrupt 4--if overflow flag is 1
0F 08 INVD Flush internal caches
0F 01 /7 INVLPG m Invalidate TLB Entry for page (m)
CF IRETD Interrupt return(32)
77 cb JA rel8 Jump short if above
73 cb JAE rel8 Jump short if above or equal
76 cb JBE rel8 Jump short if below or equal
72 cb JC rel8 Jump short if carry
E3 cb JECXZ rel8 Jump short if ECX register is 0
74 cb JE rel8 Jump short if equal
7F cb JG rel8 Jump short if greater
7D cb JGE rel8 Jump short if greater or equal
7C cb JL rel8 Jump short if less
7E cb JLE rel8 Jump short if less or equal
75 cb JNE rel8 Jump short if not equal
71 cb JNO rel8 Jump short if not overflow
79 cb JNS rel8 Jump short if not sign
70 cb JO rel8 Jump short if overflow
7A cb JPE rel8 Jump short if parity even
7B cb JPO rel8 Jump short if parity odd
78 cb JS rel8 Jump short if sign
0F 87 cd JA rel32 Jump near if above
0F 83 cd JAE rel32 Jump near if above or equal
0F 82 cd JB rel32 Jump near if below
0F 86 cd JBE rel32 Jump near if below or equal
0F 84 cd JE rel32 Jump near if equal
0F 8F cd JG rel32 Jump near if greater
0F 8D cd JGE rel32 Jump near if greater or equal
0F 8C cd JL rel32 Jump near if less
0F 8E cd JLE rel32 Jump near if less or equal
0F 85 cd JNE rel32 Jump near if not equal
0F 81 cd JNO rel32 Jump near if not overflow
0F 89 cd JNS rel32 Jump near if not sign
0F 80 cd JO rel32 Jump near if overflow
0F 8A cd JPE rel32 Jump near if parity even
0F 8B cd JPO rel32 Jump near if parity odd
0F 88 cd JS rel32 Jump near if sign
EB cb JMP rel8 Jump short, relative,
E9 cd JMP rel32 Jump near, relative,
FF /4 JMP r/m32 Jump near, abs.ind.in r/m32
EA cp JMP ptr16:32 Jump far, abs.add given in operand
FF /r JMP m16:32 Jump far, abs.ind.in m16:32
9F LAHF Load Status Flags into AH
0F 02 /r LAR r32,r/m32 Load Access Rights Byte
C5 /r LDS r32,m16:32 Load DS:r32 with far ptr
8D /r LEA r32,m Load effective address
C9 LEAVE Set ESP to EBP, then pop EBP
C4 /r LES r32,m16:32 Load ES:r32 with far ptr
0F B4 /r LFS r32,m16:32 Load FS:r32 with far ptr
0F B5 /r LGS r32,m16:32 Load GS:r32 with far ptr
0F 01 /2 LGDT m16&32 Load m into GDTR
0F 01 /3 LIDT m16&32 Load m into IDTR
0F 00 /2 LLDT r/m16 Load segment selector r/m16 into LDTR
0F 01 /6 LMSW r/m16 Load r/m16 in machine status word of CR0
F0 LOCK Asserts LOCK signal for duration ..
AC LODS m8 Load byte at address DS:(E)SI into AL
AD LODS m32 Load dword at address DS:(E)SI into EAX
E2 cb LOOP rel8 Dec count;jump if count # 0
E1 cb LOOPE rel8 Dec count;jump if count # 0 and ZF=1
E1 cb LOOPZ rel8 Dec count;jump if count # 0 and ZF=1
E0 cb LOOPNE rel8 Dec count;jump if count # 0 and ZF=0
E0 cb LOOPNZ rel8 Dec count;jump if count # 0 and ZF=0
0F 03 /r LSL r16,r/m16 Load Segment Limit
0F 03 /r LSL r32,r/m32 Load Segment Limit
0F B2 /r LSS r32,m16:32 Load SS:r32 with far ptr
0F 00 /3 LTR r/m16 Load Task Register
88 /r MOV r/m8,r8 Move
89 /r MOV r/m32,r32 Move
8A /r MOV r8,r/m8 Move
8B /r MOV r32,r/m32 Move
8C /r MOV r/m16,Sreg** Move segment register to r/m16
8E /r MOV Sreg,r/m16** Move r/m16 to segment register
A0 MOV AL, moffs8* Move byte at ( seg:offset) to AL
A1 MOV AX, moffs16* Move word at ( seg:offset) to AX
A1 MOV EAX, moffs32* Move dword at ( seg:offset) to EAX
A2 MOV moffs8*,AL Move AL to ( seg:offset)
A3 MOV moffs16*,AX Move AX to ( seg:offset)
A3 MOV moffs32*,EAX Move EAX to ( seg:offset)
B0+rb MOV r8,imm8 Move imm8 to r8
B8+rd MOV r32,imm32 Move imm32 to r32
C6 /0 ib MOV r/m8,imm8 Move imm8 to r/m8
C7 /0 id MOV r/m32,imm32 Move imm32 to r/m32
0F 22 /r MOV CR0, r32 Move r32 to CR0
0F 22 /r MOV CR2, r32 Move r32 to CR2
0F 22 /r MOV CR3, r32 Move r32 to CR3
0F 22 /r MOV CR4, r32 Move r32 to CR4
0F 20 /r MOV r32,CR0 Move CR0 to r32
0F 20 /r MOV r32,CR2 Move CR2 to r32
0F 20 /r MOV r32,CR3 Move CR3 to r32
0F 20 /r MOV r32,CR4 Move CR4 to r32
0F 21 /r MOV r32,DR0-DR7 Move debug register to r32
0F 23 /r MOV DR0-DR7,r32 Move r32 to debug register
0F 6E /r MOVD mm,r/m32 Move doubleword from r/m32 to mm
0F 7E /r MOVD r/m32,mm Move doubleword from mm to r/m32
0F 6F /r MOVQ mm,mm/m64 Move quadword from mm/m64 to mm
0F 7F /r MOVQ mm/m64,mm Move quadword from mm to mm/m64
A4 MOVS m8,m8 Move byte at DS:(E)SI to ES:(E)DI
A5 MOVS m32,m32 Move dword at DS:(E)SI to ES:(E)DI
0F BE /r MOVSX r32,r/m8 Move byte to doubleword, sign-extension
0F BF /r MOVSX r32,r/m16 Move word to doubleword, sign-extension
0F B6 /r MOVZX r32,r/m8 Move byte to doubleword, zero-extension
0F B7 /r MOVZX r32,r/m16 Move word to doubleword, zero-extension
F6 /4 MUL r/m8 Unsigned multiply
F7 /4 MUL r/m32 Unsigned multiply
F6 /3 NEG r/m8 Two's complement negate r/m8
F7 /3 NEG r/m32 Two's complement negate r/m32
90 NOP No operation
F6 /2 NOT r/m8 Reverse each bit of r/m8
F7 /2 NOT r/m32 Reverse each bit of r/m32
0C ib OR AL,imm8 OR
0D id OR EAX,imm32 OR
80 /1 ib OR r/m8,imm8 OR
81 /1 id OR r/m32,imm32 OR
83 /1 ib OR r/m32,imm8 OR
08 /r OR r/m8,r8 OR
09 /r OR r/m32,r32 OR
0A /r OR r8,r/m8 OR
0B /r OR r32,r/m32 OR
E6 ib OUT imm8,AL Output byte in AL to I/O(imm8)
E7 ib OUT imm8,EAX Output dword in EAX to I/O(imm8)
EE OUT DX,AL Output byte in AL to I/O(DX)
EF OUT DX,EAX Output dword in EAX to I/O(DX)
6E OUTS DX,m8 Output byte from DS:(E)SI to I/O(DX)
6F OUTS DX,m32 Output dword from DS:(E)SI to I/O (DX)
0F 63 /r PACKSSWB mm,mm/m64 Pack with Signed Saturation
0F 6B /r PACKSSDW mm,mm/m64 Pack with Signed Saturation
0F 67 /r PACKUSWB mm,mm/m64 Pack with Unsigned Saturation
0F FC /r PADDB mm,mm/m64 Add packed bytes
0F FD /r PADDW mm,mm/m64 Add packed words
0F FE /r PADDD mm,mm/m64 Add packed dwords
0F EC /r PADDSB mm,mm/m64 Add signed packed bytes
0F ED /r PADDSW mm,mm/m64 Add signed packed words
0F DC /r PADDUSB mm,mm/m64 Add unsigned pkd bytes
0F DD /r PADDUSW mm,mm/m64 Add unsigned pkd words
0F DB /r PAND mm,mm/m64 AND quadword from .. to ..
0F DF /r PANDN mm,mm/m64 And qword from .. to NOT qw in mm
0F 74 /r PCMPEQB mm,mm/m64 Packed Compare for Equal
0F 75 /r PCMPEQW mm,mm/m64 Packed Compare for Equal
0F 76 /r PCMPEQD mm,mm/m64 Packed Compare for Equal
0F 64 /r PCMPGTB mm,mm/m64 Packed Compare for GT
0F 65 /r PCMPGTW mm,mm/m64 Packed Compare for GT
0F 66 /r PCMPGTD mm,mm/m64 Packed Compare for GT
0F F5 /r PMADDWD mm,mm/m64 Packed Multiply and Add
0F E5 /r PMULHW mm,mm/m64 Packed Multiply High
0F D5 /r PMULLW mm,mm/m64 Packed Multiply Low
8F /0 POP m32 Pop m32
58+rd POP r32 Pop r32
1F POP DS Pop DS
07 POP ES Pop ES
17 POP SS Pop SS
0F A1 POP FS Pop FS
0F A9 POP GS Pop GS
61 POPAD Pop EDI,... and EAX
9D POPFD Pop Stack into EFLAGS Register
0F EB /r POR mm,mm/m64 OR qword from .. to mm
0F F1 /r PSLLW mm,mm/m64 Packed Shift Left Logical
0F 71 /6 ib PSLLW mm,imm8 Packed Shift Left Logical
0F F2 /r PSLLD mm,mm/m64 Packed Shift Left Logical
0F 72 /6 ib PSLLD mm,imm8 Packed Shift Left Logical
0F F3 /r PSLLQ mm,mm/m64 Packed Shift Left Logical
0F 73 /6 ib PSLLQ mm,imm8 Packed Shift Left Logical
0F E1 /r PSRAW mm,mm/m64 Packed Shift Right Arithmetic
0F 71 /4 ib PSRAW mm,imm8 Packed Shift Right Arithmetic
0F E2 /r PSRAD mm,mm/m64 Packed Shift Right Arithmetic
0F 72 /4 ib PSRAD mm,imm8 Packed Shift Right Arithmetic
0F D1 /r PSRLW mm,mm/m64 Packed Shift Right Logical
0F 71 /2 ib PSRLW mm,imm8 Packed Shift Right Logical
0F D2 /r PSRLD mm,mm/m64 Packed Shift Right Logical
0F 72 /2 ib PSRLD mm,imm8 Packed Shift Right Logical
0F D3 /r PSRLQ mm,mm/m64 Packed Shift Right Logical
0F 73 /2 ib PSRLQ mm,imm8 Packed Shift Right Logical
0F F8 /r PSUBB mm,mm/m64 Packed Subtract
0F F9 /r PSUBW mm,mm/m64 Packed Subtract
0F FA /r PSUBD mm,mm/m64 Packed Subtract
0F E8 /r PSUBSB mm,mm/m64 Packed Subtract with Saturation
0F E9 /r PSUBSW mm,mm/m64 Packed Subtract with Saturation
0F D8 /r PSUBUSB mm,mm/m64 Packed Subtract Unsigned with S.
0F D9 /r PSUBUSW mm,mm/m64 Packed Subtract Unsigned with S.
0F 68 /r PUNPCKHBW mm,mm/m64 Unpack High Packed Data
0F 69 /r PUNPCKHWD mm,mm/m64 Unpack High Packed Data
0F 6A /r PUNPCKHDQ mm,mm/m64 Unpack High Packed Data
0F 60 /r PUNPCKLBW mm,mm/m64 Unpack Low Packed Data
0F 61 /r PUNPCKLWD mm,mm/m64 Unpack Low Packed Data
0F 62 /r PUNPCKLDQ mm,mm/m64 Unpack Low Packed Data
FF /6 PUSH r/m32 Push r/m32
50+rd PUSH r32 Push r32
6A ib PUSH imm8 Push imm8
68 id PUSH imm32 Push imm32
0E PUSH CS Push CS
16 PUSH SS Push SS
1E PUSH DS Push DS
06 PUSH ES Push ES
0F A0 PUSH FS Push FS
0F A8 PUSH GS Push GS
60 PUSHAD Push All g-regs
9C PUSHFD Push EFLAGS
0F EF /r PXOR mm,mm/m64 XOR qword
D0 /2 RCL r/m8,1 Rotate 9 bits left once
D2 /2 RCL r/m8,CL Rotate 9 bits left CL times
C0 /2 ib RCL r/m8,imm8 Rotate 9 bits left imm8 times
D1 /2 RCL r/m32,1 Rotate 33 bits left once
D3 /2 RCL r/m32,CL Rotate 33 bits left CL times
C1 /2 ib RCL r/m32,imm8 Rotate 33 bits left imm8 times
D0 /3 RCR r/m8,1 Rotate 9 bits right once
D2 /3 RCR r/m8,CL Rotate 9 bits right CL times
C0 /3 ib RCR r/m8,imm8 Rotate 9 bits right imm8 times
D1 /3 RCR r/m32,1 Rotate 33 bits right once
D3 /3 RCR r/m32,CL Rotate 33 bits right CL times
C1 /3 ib RCR r/m32,imm8 Rotate 33 bits right imm8 times
D0 /0 ROL r/m8,1 Rotate 8 bits r/m8 left once
D2 /0 ROL r/m8,CL Rotate 8 bits r/m8 left CL times
C0 /0 ib ROL r/m8,imm8 Rotate 8 bits r/m8 left imm8 times
D1 /0 ROL r/m32,1 Rotate 32 bits r/m32 left once
D3 /0 ROL r/m32,CL Rotate 32 bits r/m32 left CL times
C1 /0 ib ROL r/m32,imm8 Rotate 32 bits r/m32 left imm8 times
D0 /1 ROR r/m8,1 Rotate 8 bits r/m8 right once
D2 /1 ROR r/m8,CL Rotate 8 bits r/m8 right CL times
C0 /1 ib ROR r/m8,imm8 Rotate 8 bits r/m16 right imm8 times
D1 /1 ROR r/m32,1 Rotate 32 bits r/m32 right once
D3 /1 ROR r/m32,CL Rotate 32 bits r/m32 right CL times
C1 /1 ib ROR r/m32,imm8 Rotate 32 bits r/m32 right imm8 times
0F 32 RDMSR Read from Model Specific Register
0F 33 RDPMC Read Performance-Monitoring counters
0F 31 RDTSC Read Time-Stamp Counter
F3 6C REP INS m8,DX Input ECX bytes from port DX into ES:[(E)DI]
F3 6D REP INS m32,DX Input ECX dwords from port DX into ES:[(E)DI]
F3 A4 REP MOVS m8,m8 Move ECX bytes from DS:[(E)SI] to ES:[(E)DI]
F3 A5 REP MOVS m32,m32 Move ECX dwords from DS:[(E)SI] to ES:[(E)DI]
F3 6E REP OUTS DX,m8 Output ECX bytes from DS:[(E)SI] to port DX
F3 6F REP OUTS DX,m32 Output ECX dwords from DS:[(E)SI] to port DX
F3 AC REP LODS AL Load ECX bytes from DS:[(E)SI] to AL
F3 AD REP LODS EAX Load ECX dwords from DS:[(E)SI] to EAX
F3 AA REP STOS m8 Fill ECX bytes at ES:[(E)DI] with AL
F3 AB REP STOS m32 Fill ECX dwords at ES:[(E)DI] with EAX
F3 A6 REPE CMPS m8,m8 Find nonmatching bytes in m and m
F3 A7 REPE CMPS m32,m32 Find nonmatching dwords in m and m
F3 AE REPE SCAS m8 Find non-AL byte starting at
F3 AF REPE SCAS m32 Find non-EAX dword starting at
F2 A6 REPNE CMPS m8,m8 Find matching bytes in m and m
F2 A7 REPNE CMPS m32,m32 Find matching dwords in m and m
F2 AE REPNE SCAS m8 Find AL, starting at ES:[(E)DI]
F2 AF REPNE SCAS m32 Find EAX, starting at ES:[(E)DI]
C3 RET Near return
CB RET Far return
C2 iw RET imm16 Near return, pop imm16 bytes from stack
CA iw RET imm16 Far return, pop imm16 bytes from stack
0F AA RSM Resume from System Management
9E SAHF Store AH into Flags
D0 /4 SAL r/m8,1 Shift Arithmetic Left
D2 /4 SAL r/m8,CL Shift Arithmetic Left
C0 /4 ib SAL r/m8,imm8 Shift Arithmetic Left
D1 /4 SAL r/m32,1 Shift Arithmetic Left
D3 /4 SAL r/m32,CL Shift Arithmetic Left
C1 /4 ib SAL r/m32,imm8 Shift Arithmetic Left
D0 /7 SAR r/m8,1 Shift Arithmetic Right
D2 /7 SAR r/m8,CL Shift Arithmetic Right
C0 /7 ib SAR r/m8,imm8 Shift Arithmetic Right
D1 /7 SAR r/m32,1 Shift Arithmetic Right
D3 /7 SAR r/m32,CL Shift Arithmetic Right
C1 /7 ib SAR r/m32,imm8 Shift Arithmetic Right
D0 /4 SHL r/m8,1 Shift Logical Left
D2 /4 SHL r/m8,CL Shift Logical Left
C0 /4 ib SHL r/m8,imm8 Shift Logical Left
D1 /4 SHL r/m32,1 Shift Logical Left
D3 /4 SHL r/m32,CL Shift Logical Left
C1 /4 ib SHL r/m32,imm8 Shift Logical Left
D0 /5 SHR r/m8,1 Shift Logical Right
D2 /5 SHR r/m8,CL Shift Logical Right
C0 /5 ib SHR r/m8,imm8 Shift Logical Right
D1 /5 SHR r/m32,1 Shift Logical Right
D3 /5 SHR r/m32,CL Shift Logical Right
C1 /5 ib SHR r/m32,imm8 Shift Logical Right
1C ib SBB AL,imm8 Subtract with borrow
1D id SBB EAX,imm32 Subtract with borrow
80 /3 ib SBB r/m8,imm8 Subtract with borrow
81 /3 id SBB r/m32,imm32 Subtract with borrow
83 /3 ib SBB r/m32,imm8 Subtract with borrow
18 /r SBB r/m8,r8 Subtract with borrow
19 /r SBB r/m32,r32 Subtract with borrow
1A /r SBB r8,r/m8 Subtract with borrow
1B /r SBB r32,r/m32 Subtract with borrow
AE SCAS m8 Scan String
AF SCAS m32 Scan String
0F 97 /r SETA r/m8 Set byte if above
0F 93 /r SETAE r/m8 Set byte if above or equal
0F 92 /r SETB r/m8 Set byte if below
0F 96 /r SETBE r/m8 Set byte if below or equal
0F 94 /r SETE r/m8 Set byte if equal
0F 9F /r SETG r/m8 Set byte if greater
0F 9D /r SETGE r/m8 Set byte if greater or equal
0F 9C /r SETL r/m8 Set byte if less
0F 9E /r SETLE r/m8 Set byte if less or equal
0F 95 /r SETNE r/m8 Set byte if not equal
0F 91 /r SETNO r/m8 Set byte if not overflow
0F 99 /r SETNS r/m8 Set byte if not sign
0F 90 /r SETO r/m8 Set byte if overflow
0F 9A /r SETPE r/m8 Set byte if parity even
0F 9B /r SETPO r/m8 Set byte if parity odd
0F 98 /r SETS r/m8 Set byte if sign
0F 01 /0 SGDT m Store GDTR to m
0F 01 /1 SIDT m Store IDTR to m
0F A4 /r ib SHLD r/m32,r32,imm8 Double Precision Shift Left
0F A5 /r SHLD r/m32,r32,CL Double Precision Shift Left
0F AC /r ib SHRD r/m32,r32,imm8 Double Precision Shift Right
0F AD /r SHRD r/m32,r32,CL Double Precision Shift Right
0F 00 /0 SLDT r/m32 Store Local Descriptor Table Register
0F 01 /4 SMSW r/m32 Store Machine Status Word
F9 STC Set Carry Flag
FD STD Set Direction Flag
FB STI Set Interrup Flag
AA STOS m8 Store String
AB STOS m32 Store String
0F 00 /1 STR r/m16 Store Task Register
2C ib SUB AL,imm8 Subtract
2D id SUB EAX,imm32 Subtract
80 /5 ib SUB r/m8,imm8 Subtract
81 /5 id SUB r/m32,imm32 Subtract
83 /5 ib SUB r/m32,imm8 Subtract
28 /r SUB r/m8,r8 Subtract
29 /r SUB r/m32,r32 Subtract
2A /r SUB r8,r/m8 Subtract
2B /r SUB r32,r/m32 Subtract
A8 ib TEST AL,imm8 Logical Compare
A9 id TEST EAX,imm32 Logical Compare
F6 /0 ib TEST r/m8,imm8 Logical Compare
F7 /0 id TEST r/m32,imm32 Logical Compare
84 /r TEST r/m8,r8 Logical Compare
85 /r TEST r/m16,r16 Logical Compare
85 /r TEST r/m32,r32 Logical Compare
0F 0B UD2 Undifined Instruction
0F 00 /4 VERR r/m16 Verify a Segment for Reading
0F 00 /5 VERW r/m16 Verify a Segment for Writing
9B WAIT Wait
9B FWAIT Wait
0F 09 WBINVD Write Back and Invalidate Cache
0F 30 WRMSR Write to Model Specific Register
0F C0 /r XADD r/m8,r8 Exchange and Add
0F C1 /r XADD r/m16,r16 Exchange and Add
0F C1 /r XADD r/m32,r32 Exchange and Add
90+rd XCHG EAX,r32 Exchange r32 with EAX
90+rd XCHG r32,EAX Exchange EAX with r32
86 /r XCHG r/m8,r8 Exchange byte
86 /r XCHG r8,r/m8 Exchange byte
87 /r XCHG r/m32,r32 Exchange doubleword
87 /r XCHG r32,r/m32 Exchange doubleword
D7 XLAT m8 Table Look-up Translation
34 ib XOR AL,imm8 Logical Exclusive OR
35 id XOR EAX,imm32 Logical Exclusive OR
80 /6 ib XOR r/m8,imm8 Logical Exclusive OR
81 /6 id XOR r/m32,imm32 Logical Exclusive OR
83 /6 ib XOR r/m32,imm8 Logical Exclusive OR
30 /r XOR r/m8,r8 Logical Exclusive OR
31 /r XOR r/m32,r32 Logical Exclusive OR
32 /r XOR r8,r/m8 Logical Exclusive OR
33 /r XOR r32,r/m32 Logical Exclusive OR
Opcode ordered Listing
===============================================================================
Opcode,Data Instruction Explanation
-------------------------------------------------------------------------------
00 /r ADD r/m8,r8 ADD
01 /r ADD r/m32,r32 ADD
02 /r ADD r8,r/m8 ADD
03 /r ADD r32,r/m32 ADD
04 ib ADD AL,imm8 Add
05 id ADD EAX,imm32 Add
06 PUSH ES Push ES
07 POP ES Pop ES
08 /r OR r/m8,r8 OR
09 /r OR r/m32,r32 OR
0A /r OR r8,r/m8 OR
0B /r OR r32,r/m32 OR
0C ib OR AL,imm8 OR
0D id OR EAX,imm32 OR
0E PUSH CS Push CS
0F 00 /0 SLDT r/m32 Store Local Descriptor Table Register
0F 00 /1 STR r/m16 Store Task Register
0F 00 /2 LLDT r/m16 Load segment selector r/m16 into LDTR
0F 00 /3 LTR r/m16 Load Task Register
0F 00 /4 VERR r/m16 Verify a Segment for Reading
0F 00 /5 VERW r/m16 Verify a Segment for Writing
0F 01 /0 SGDT m Store GDTR to m
0F 01 /1 SIDT m Store IDTR to m
0F 01 /2 LGDT m16&32 Load m into GDTR
0F 01 /3 LIDT m16&32 Load m into IDTR
0F 01 /4 SMSW r/m32 Store Machine Status Word
0F 01 /6 LMSW r/m16 Load r/m16 in machine status word of CR0
0F 01 /7 INVLPG m Invalidate TLB Entry for page (m)
0F 02 /r LAR r32,r/m32 Load Access Rights Byte
0F 03 /r LSL r16,r/m16 Load Segment Limit
0F 03 /r LSL r32,r/m32 Load Segment Limit
0F 06 CLTS Clear Task-Switched Flag in Control Reg. Zero
0F 08 INVD Flush internal caches
0F 09 WBINVD Write Back and Invalidate Cache
0F 0B UD2 Undifined Instruction
0F 20 /r MOV r32,CR0 Move CR0 to r32
0F 20 /r MOV r32,CR2 Move CR2 to r32
0F 20 /r MOV r32,CR3 Move CR3 to r32
0F 20 /r MOV r32,CR4 Move CR4 to r32
0F 21 /r MOV r32,DR0-DR7 Move debug register to r32
0F 22 /r MOV CR0, r32 Move r32 to CR0
0F 22 /r MOV CR2, r32 Move r32 to CR2
0F 22 /r MOV CR3, r32 Move r32 to CR3
0F 22 /r MOV CR4, r32 Move r32 to CR4
0F 23 /r MOV DR0-DR7,r32 Move r32 to debug register
0F 30 WRMSR Write to Model Specific Register
0F 31 RDTSC Read Time-Stamp Counter
0F 32 RDMSR Read from Model Specific Register
0F 33 RDPMC Read Performance-Monitoring counters
0F 40 /r CMOVO r32,r/m32 Move if overflow
0F 41 /r CMOVNO r32,r/m32 Move if not overflow
0F 42 /r CMOVB r32,r/m32 Move if below
0F 42 /r CMOVC r32,r/m32 Move if carry
0F 42 /r CMOVNAE r32,r/m32 Move if not above or equal
0F 43 /r CMOVAE r32,r/m32 Move if above or equal
0F 43 /r CMOVNB r32,r/m32 Move if not below
0F 43 /r CMOVNC r32,r/m32 Move if not carry
0F 44 /r CMOVE r32,r/m32 Move if equal
0F 44 /r CMOVZ r32,r/m32 Move if zero
0F 45 /r CMOVNE r32,r/m32 Move if not equal
0F 45 /r CMOVNZ r32,r/m32 Move if not zero
0F 46 /r CMOVBE r32,r/m32 Move if below or equal
0F 46 /r CMOVNA r32,r/m32 Move if not above
0F 47 /r CMOVA r32,r/m32 Move if above
0F 47 /r CMOVNBE r32,r/m32 Move if not below or equal
0F 48 /r CMOVS r32,r/m32 Move if sign
0F 49 /r CMOVNS r32,r/m32 Move if not sign
0F 4A /r CMOVP r32,r/m32 Move if parity
0F 4A /r CMOVPE r32,r/m32 Move if parity even
0F 4B /r CMOVNP r32,r/m32 Move if not parity
0F 4B /r CMOVPO r32,r/m32 Move if parity odd
0F 4C /r CMOVL r32,r/m32 Move if less
0F 4C /r CMOVNGE r32,r/m32 Move if not greater or equal
0F 4D /r CMOVGE r32,r/m32 Move if greater or equal
0F 4D /r CMOVNL r32,r/m32 Move if not less
0F 4E /r CMOVLE r32,r/m32 Move if less or equal
0F 4E /r CMOVNG r32,r/m32 Move if not greater
0F 4F /r CMOVG r32,r/m32 Move if greater
0F 4F /r CMOVNLE r32,r/m32 Move if not less or equal
0F 60 /r PUNPCKLBW mm,mm/m64 Unpack Low Packed Data
0F 61 /r PUNPCKLWD mm,mm/m64 Unpack Low Packed Data
0F 62 /r PUNPCKLDQ mm,mm/m64 Unpack Low Packed Data
0F 63 /r PACKSSWB mm,mm/m64 Pack with Signed Saturation
0F 64 /r PCMPGTB mm,mm/m64 Packed Compare for GT
0F 65 /r PCMPGTW mm,mm/m64 Packed Compare for GT
0F 66 /r PCMPGTD mm,mm/m64 Packed Compare for GT
0F 67 /r PACKUSWB mm,mm/m64 Pack with Unsigned Saturation
0F 68 /r PUNPCKHBW mm,mm/m64 Unpack High Packed Data
0F 69 /r PUNPCKHWD mm,mm/m64 Unpack High Packed Data
0F 6A /r PUNPCKHDQ mm,mm/m64 Unpack High Packed Data
0F 6B /r PACKSSDW mm,mm/m64 Pack with Signed Saturation
0F 6E /r MOVD mm,r/m32 Move doubleword from r/m32 to mm
0F 6F /r MOVQ mm,mm/m64 Move quadword from mm/m64 to mm
0F 71 /2 ib PSRLW mm,imm8 Packed Shift Right Logical
0F 71 /4 ib PSRAW mm,imm8 Packed Shift Right Arithmetic
0F 71 /6 ib PSLLW mm,imm8 Packed Shift Left Logical
0F 72 /2 ib PSRLD mm,imm8 Packed Shift Right Logical
0F 72 /4 ib PSRAD mm,imm8 Packed Shift Right Arithmetic
0F 72 /6 ib PSLLD mm,imm8 Packed Shift Left Logical
0F 73 /2 ib PSRLQ mm,imm8 Packed Shift Right Logical
0F 73 /6 ib PSLLQ mm,imm8 Packed Shift Left Logical
0F 74 /r PCMPEQB mm,mm/m64 Packed Compare for Equal
0F 75 /r PCMPEQW mm,mm/m64 Packed Compare for Equal
0F 76 /r PCMPEQD mm,mm/m64 Packed Compare for Equal
0F 77 EMMS Set the FP tag word to empty
0F 7E /r MOVD r/m32,mm Move doubleword from mm to r/m32
0F 7F /r MOVQ mm/m64,mm Move quadword from mm to mm/m64
0F 80 cd JO rel32 Jump near if overflow
0F 81 cd JNO rel32 Jump near if not overflow
0F 82 cd JB rel32 Jump near if below
0F 83 cd JAE rel32 Jump near if above or equal
0F 84 cd JE rel32 Jump near if equal
0F 85 cd JNE rel32 Jump near if not equal
0F 86 cd JBE rel32 Jump near if below or equal
0F 87 cd JA rel32 Jump near if above
0F 88 cd JS rel32 Jump near if sign
0F 89 cd JNS rel32 Jump near if not sign
0F 8A cd JPE rel32 Jump near if parity even
0F 8B cd JPO rel32 Jump near if parity odd
0F 8C cd JL rel32 Jump near if less
0F 8D cd JGE rel32 Jump near if greater or equal
0F 8E cd JLE rel32 Jump near if less or equal
0F 8F cd JG rel32 Jump near if greater
0F 90 /r SETO r/m8 Set byte if overflow
0F 91 /r SETNO r/m8 Set byte if not overflow
0F 92 /r SETB r/m8 Set byte if below
0F 93 /r SETAE r/m8 Set byte if above or equal
0F 94 /r SETE r/m8 Set byte if equal
0F 95 /r SETNE r/m8 Set byte if not equal
0F 96 /r SETBE r/m8 Set byte if below or equal
0F 97 /r SETA r/m8 Set byte if above
0F 98 /r SETS r/m8 Set byte if sign
0F 99 /r SETNS r/m8 Set byte if not sign
0F 9A /r SETPE r/m8 Set byte if parity even
0F 9B /r SETPO r/m8 Set byte if parity odd
0F 9C /r SETL r/m8 Set byte if less
0F 9D /r SETGE r/m8 Set byte if greater or equal
0F 9E /r SETLE r/m8 Set byte if less or equal
0F 9F /r SETG r/m8 Set byte if greater
0F A0 PUSH FS Push FS
0F A1 POP FS Pop FS
0F A2 CPUID EAX := Processor id.info.
0F A3 /r BT r/m32,r32 Bit Test
0F A4 /r ib SHLD r/m32,r32,imm8 Double Precision Shift Left
0F A5 /r SHLD r/m32,r32,CL Double Precision Shift Left
0F A8 PUSH GS Push GS
0F A9 POP GS Pop GS
0F AA RSM Resume from System Management
0F AB /r BTS r/m32,r32 Bit Test and Set
0F AC /r ib SHRD r/m32,r32,imm8 Double Precision Shift Right
0F AD /r SHRD r/m32,r32,CL Double Precision Shift Right
0F AF /r IMUL r32,r/m32 Multiply
0F B0 /r CMPXCHG r/m8,r8 Compare and Exchange
0F B1 /r CMPXCHG r/m32,r32 Compare and Exchange
0F B2 /r LSS r32,m16:32 Load SS:r32 with far ptr
0F B3 /r BTR r/m32,r32 Bit Test and Clear
0F B4 /r LFS r32,m16:32 Load FS:r32 with far ptr
0F B5 /r LGS r32,m16:32 Load GS:r32 with far ptr
0F B6 /r MOVZX r32,r/m8 Move byte to doubleword, zero-extension
0F B7 /r MOVZX r32,r/m16 Move word to doubleword, zero-extension
0F BA /4 ib BT r/m32,imm8 Bit Test
0F BA /5 ib BTS r/m32,imm8 Bit Test and Set
0F BA /6 ib BTR r/m32,imm8 Bit Test and Clear
0F BA /7 ib BTC r/m32,imm8 Bit Test and Complement
0F BB /r BTC r/m32,r32 Bit Test and Complement
0F BC /r BSF r32,r/m32 Bit scan forward on r/m32
0F BD /r BSR r32,r/m32 Bit scan reverse on r/m32
0F BE /r MOVSX r32,r/m8 Move byte to doubleword, sign-extension
0F BF /r MOVSX r32,r/m16 Move word to doubleword, sign-extension
0F C0 /r XADD r/m8,r8 Exchange and Add
0F C1 /r XADD r/m16,r16 Exchange and Add
0F C1 /r XADD r/m32,r32 Exchange and Add
0F C7 /1 m64 CMPXCHG8B m64 Compare and Exchange
0F C8+rd BSWAP r32 Reverses the byte order of a r32
0F D1 /r PSRLW mm,mm/m64 Packed Shift Right Logical
0F D2 /r PSRLD mm,mm/m64 Packed Shift Right Logical
0F D3 /r PSRLQ mm,mm/m64 Packed Shift Right Logical
0F D5 /r PMULLW mm,mm/m64 Packed Multiply Low
0F D8 /r PSUBUSB mm,mm/m64 Packed Subtract Unsigned with S.
0F D9 /r PSUBUSW mm,mm/m64 Packed Subtract Unsigned with S.
0F DB /r PAND mm,mm/m64 AND quadword from .. to ..
0F DC /r PADDUSB mm,mm/m64 Add unsigned pkd bytes
0F DD /r PADDUSW mm,mm/m64 Add unsigned pkd words
0F DF /r PANDN mm,mm/m64 And qword from .. to NOT qw in mm
0F E1 /r PSRAW mm,mm/m64 Packed Shift Right Arithmetic
0F E2 /r PSRAD mm,mm/m64 Packed Shift Right Arithmetic
0F E5 /r PMULHW mm,mm/m64 Packed Multiply High
0F E8 /r PSUBSB mm,mm/m64 Packed Subtract with Saturation
0F E9 /r PSUBSW mm,mm/m64 Packed Subtract with Saturation
0F EB /r POR mm,mm/m64 OR qword from .. to mm
0F EC /r PADDSB mm,mm/m64 Add signed packed bytes
0F ED /r PADDSW mm,mm/m64 Add signed packed words
0F EF /r PXOR mm,mm/m64 XOR qword
0F F1 /r PSLLW mm,mm/m64 Packed Shift Left Logical
0F F2 /r PSLLD mm,mm/m64 Packed Shift Left Logical
0F F3 /r PSLLQ mm,mm/m64 Packed Shift Left Logical
0F F5 /r PMADDWD mm,mm/m64 Packed Multiply and Add
0F F8 /r PSUBB mm,mm/m64 Packed Subtract
0F F9 /r PSUBW mm,mm/m64 Packed Subtract
0F FA /r PSUBD mm,mm/m64 Packed Subtract
0F FC /r PADDB mm,mm/m64 Add packed bytes
0F FD /r PADDW mm,mm/m64 Add packed words
0F FE /r PADDD mm,mm/m64 Add packed dwords
10 /r ADC r/m8,r8 Add with carry
11 /r ADC r/m32,r32 Add with carry
12 /r ADC r8,r/m8 Add with carry
13 /r ADC r32,r/m32 Add with carry
14 ib ADC AL,imm8 Add with carry
15 id ADC EAX,imm32 Add with carry
16 PUSH SS Push SS
17 POP SS Pop SS
18 /r SBB r/m8,r8 Subtract with borrow
19 /r SBB r/m32,r32 Subtract with borrow
1A /r SBB r8,r/m8 Subtract with borrow
1B /r SBB r32,r/m32 Subtract with borrow
1C ib SBB AL,imm8 Subtract with borrow
1D id SBB EAX,imm32 Subtract with borrow
1E PUSH DS Push DS
1F POP DS Pop DS
20 /r AND r/m8,r8 AND
21 /r AND r/m32,r32 AND
22 /r AND r8,r/m8 AND
23 /r AND r32,r/m32 AND
24 ib AND AL,imm8 AND
25 id AND EAX,imm32 AND
26 ES: Segment overide prefix
27 DAA Decimal adjust AL after addition
28 /r SUB r/m8,r8 Subtract
29 /r SUB r/m32,r32 Subtract
2A /r SUB r8,r/m8 Subtract
2B /r SUB r32,r/m32 Subtract
2C ib SUB AL,imm8 Subtract
2D id SUB EAX,imm32 Subtract
2E CS: Segment overide prefix
2F DAS Decimal adjust AL after subtraction
30 /r XOR r/m8,r8 Logical Exclusive OR
31 /r XOR r/m32,r32 Logical Exclusive OR
32 /r XOR r8,r/m8 Logical Exclusive OR
33 /r XOR r32,r/m32 Logical Exclusive OR
34 ib XOR AL,imm8 Logical Exclusive OR
35 id XOR EAX,imm32 Logical Exclusive OR
36 SS: Segment overide prefix
37 AAA ASCII adjust AL after addition
38 /r CMP r/m8,r8 Compare
39 /r CMP r/m32,r32 Compare
3A /r CMP r8,r/m8 Compare
3B /r CMP r32,r/m32 Compare
3C ib CMP AL,imm8 Compare
3D id CMP EAX,imm32 Compare
3E DS: Segment overide prefix
3F AAS ASCII adjust AL after subtraction
40+rd INC r32 Increment register by 1
48+rd DEC r32 Decrement r32 by 1
50+rd PUSH r32 Push r32
58+rd POP r32 Pop r32
60 PUSHAD Push All g-regs
61 POPAD Pop EDI,... and EAX
62 /r BOUND r32,m32&32 Check Array Index Against Bounds
63 /r ARPL r/m16,r16 Adjust Request Privilege Level of Sel.
64 FS: Segment overide prefix
65 GS: Segment overide prefix
66 Opsize: Operand size overide prefix
67 Address: Address size overide prefix
68 id PUSH imm32 Push imm32
69 /r id IMUL r32,imm32 Multiply
69 /r id IMUL r32,r/m32,imm32 Multiply
6A ib PUSH imm8 Push imm8
6B /r ib IMUL r32,imm8 Multiply
6B /r ib IMUL r32,r/m32,imm8 Multiply
6C INS m8 Input byte from I/O(DX) into ES:(E)DI
6D INS m32 Input dw from I/O(DX) into ES:(E)DI
6E OUTS DX,m8 Output byte from DS:(E)SI to I/O(DX)
6F OUTS DX,m32 Output dword from DS:(E)SI to I/O (DX)
70 cb JO rel8 Jump short if overflow
71 cb JNO rel8 Jump short if not overflow
72 cb JC rel8 Jump short if carry
73 cb JAE rel8 Jump short if above or equal
74 cb JE rel8 Jump short if equal
75 cb JNE rel8 Jump short if not equal
76 cb JBE rel8 Jump short if below or equal
77 cb JA rel8 Jump short if above
78 cb JS rel8 Jump short if sign
79 cb JNS rel8 Jump short if not sign
7A cb JPE rel8 Jump short if parity even
7B cb JPO rel8 Jump short if parity odd
7C cb JL rel8 Jump short if less
7D cb JGE rel8 Jump short if greater or equal
7E cb JLE rel8 Jump short if less or equal
7F cb JG rel8 Jump short if greater
80 /0 ib ADD r/m8,imm8 Add
80 /1 ib OR r/m8,imm8 OR
80 /2 ib ADC r/m8,imm8 Add with carry
80 /3 ib SBB r/m8,imm8 Subtract with borrow
80 /4 ib AND r/m8,imm8 AND
80 /5 ib SUB r/m8,imm8 Subtract
80 /6 ib XOR r/m8,imm8 Logical Exclusive OR
80 /7 ib CMP r/m8,imm8 Compare
81 /0 id ADD r/m32,imm32 Add
81 /1 id OR r/m32,imm32 OR
81 /2 id ADC r/m32,imm32 Add with carry
81 /3 id SBB r/m32,imm32 Subtract with borrow
81 /4 id AND r/m32,imm32 AND
81 /5 id SUB r/m32,imm32 Subtract
81 /6 id XOR r/m32,imm32 Logical Exclusive OR
81 /7 id CMP r/m32,imm32 Compare
83 /0 ib ADD r/m32,imm8 Add
83 /1 ib OR r/m32,imm8 OR
83 /2 ib ADC r/m32,imm8 Add with carry
83 /3 ib SBB r/m32,imm8 Subtract with borrow
83 /4 ib AND r/m32,imm8 AND
83 /5 ib SUB r/m32,imm8 Subtract
83 /6 ib XOR r/m32,imm8 Logical Exclusive OR
83 /7 ib CMP r/m32,imm8 Compare
84 /r TEST r/m8,r8 Logical Compare
85 /r TEST r/m16,r16 Logical Compare
85 /r TEST r/m32,r32 Logical Compare
86 /r XCHG r/m8,r8 Exchange byte
86 /r XCHG r8,r/m8 Exchange byte
87 /r XCHG r/m32,r32 Exchange doubleword
87 /r XCHG r32,r/m32 Exchange doubleword
88 /r MOV r/m8,r8 Move
89 /r MOV r/m32,r32 Move
8A /r MOV r8,r/m8 Move
8B /r MOV r32,r/m32 Move
8C /r MOV r/m16,Sreg** Move segment register to r/m16
8D /r LEA r32,m Load effective address
8E /r MOV Sreg,r/m16** Move r/m16 to segment register
8F /0 POP m32 Pop m32
90 NOP No operation
90+rd XCHG EAX,r32 Exchange r32 with EAX
90+rd XCHG r32,EAX Exchange EAX with r32
98 CBW Convert Byte to Word
99 CDQ Convert Doubleword to Quadword
99 CWD Convert Word to Doubleword
9A cp CALL ptr16:32 Call far, abs.add. given in operand
9B FWAIT Wait
9B WAIT Wait
9B D9 /6 FSTENV m14/28byte Store FPU environment
9B D9 /7 FSTCW m2byte Store FPU control word
9B DB E2 FCLEX Clear f.e.f. after checking for ..
9B DB E3 FINIT Initialize FPU after ...
9B DD /6 FSAVE m94/108byte Store FPU status to m94 or m108
9B DD /7 FSTSW m2byte Store FPU status word at m2byte after
9B DF E0 FSTSW AX Store FPU status word in AX after
9C PUSHFD Push EFLAGS
9D POPFD Pop Stack into EFLAGS Register
9E SAHF Store AH into Flags
9F LAHF Load Status Flags into AH
A0 MOV AL, moffs8* Move byte at ( seg:offset) to AL
A1 MOV AX, moffs16* Move word at ( seg:offset) to AX
A1 MOV EAX, moffs32* Move dword at ( seg:offset) to EAX
A2 MOV moffs8*,AL Move AL to ( seg:offset)
A3 MOV moffs16*,AX Move AX to ( seg:offset)
A3 MOV moffs32*,EAX Move EAX to ( seg:offset)
A4 MOVS m8,m8 Move byte at DS:(E)SI to ES:(E)DI
A5 MOVS m32,m32 Move dword at DS:(E)SI to ES:(E)DI
A6 CMPSB Compare byte at DS:(E)SI with ES:(E)DI
A7 CMPSD Compare dw at DS:(E)SI with ES:(E)DI
A8 ib TEST AL,imm8 Logical Compare
A9 id TEST EAX,imm32 Logical Compare
AA STOS m8 Store String
AB STOS m32 Store String
AC LODS m8 Load byte at address DS:(E)SI into AL
AD LODS m32 Load dword at address DS:(E)SI into EAX
AE SCAS m8 Scan String
AF SCAS m32 Scan String
B0+rb MOV r8,imm8 Move imm8 to r8
B8+rd MOV r32,imm32 Move imm32 to r32
C0 /0 ib ROL r/m8,imm8 Rotate 8 bits r/m8 left imm8 times
C0 /1 ib ROR r/m8,imm8 Rotate 8 bits r/m16 right imm8 times
C0 /2 ib RCL r/m8,imm8 Rotate 9 bits left imm8 times
C0 /3 ib RCR r/m8,imm8 Rotate 9 bits right imm8 times
C0 /4 ib SAL r/m8,imm8 Shift Arithmetic Left
C0 /4 ib SHL r/m8,imm8 Shift Logical Left
C0 /5 ib SHR r/m8,imm8 Shift Logical Right
C0 /7 ib SAR r/m8,imm8 Shift Arithmetic Right
C1 /0 ib ROL r/m32,imm8 Rotate 32 bits r/m32 left imm8 times
C1 /1 ib ROR r/m32,imm8 Rotate 32 bits r/m32 right imm8 times
C1 /2 ib RCL r/m32,imm8 Rotate 33 bits left imm8 times
C1 /3 ib RCR r/m32,imm8 Rotate 33 bits right imm8 times
C1 /4 ib SAL r/m32,imm8 Shift Arithmetic Left
C1 /4 ib SHL r/m32,imm8 Shift Logical Left
C1 /5 ib SHR r/m32,imm8 Shift Logical Right
C1 /7 ib SAR r/m32,imm8 Shift Arithmetic Right
C2 iw RET imm16 Near return, pop imm16 bytes from stack
C3 RET Near return
C4 /r LES r32,m16:32 Load ES:r32 with far ptr
C5 /r LDS r32,m16:32 Load DS:r32 with far ptr
C6 /0 ib MOV r/m8,imm8 Move imm8 to r/m8
C7 /0 id MOV r/m32,imm32 Move imm32 to r/m32
C8 iw 00 ENTER imm16,0 Create a stack frame for a procedure
C8 iw 01 ENTER imm16,1 Create a nested stack frame for a proc.
C8 iw ib ENTER imm16,imm8 Create a nested stack frame for a proc.
C9 LEAVE Set ESP to EBP, then pop EBP
CA iw RET imm16 Far return, pop imm16 bytes from stack
CB RET Far return
CC INT 3 Interrupt 3--trap to debugger
CD ib INT imm8 Interrupt vector number (imm8)
CE INTO Interrupt 4--if overflow flag is 1
CF IRETD Interrupt return(32)
D0 /0 ROL r/m8,1 Rotate 8 bits r/m8 left once
D0 /1 ROR r/m8,1 Rotate 8 bits r/m8 right once
D0 /2 RCL r/m8,1 Rotate 9 bits left once
D0 /3 RCR r/m8,1 Rotate 9 bits right once
D0 /4 SAL r/m8,1 Shift Arithmetic Left
D0 /4 SHL r/m8,1 Shift Logical Left
D0 /5 SHR r/m8,1 Shift Logical Right
D0 /7 SAR r/m8,1 Shift Arithmetic Right
D1 /0 ROL r/m32,1 Rotate 32 bits r/m32 left once
D1 /1 ROR r/m32,1 Rotate 32 bits r/m32 right once
D1 /2 RCL r/m32,1 Rotate 33 bits left once
D1 /3 RCR r/m32,1 Rotate 33 bits right once
D1 /4 SAL r/m32,1 Shift Arithmetic Left
D1 /4 SHL r/m32,1 Shift Logical Left
D1 /5 SHR r/m32,1 Shift Logical Right
D1 /7 SAR r/m32,1 Shift Arithmetic Right
D2 /0 ROL r/m8,CL Rotate 8 bits r/m8 left CL times
D2 /1 ROR r/m8,CL Rotate 8 bits r/m8 right CL times
D2 /2 RCL r/m8,CL Rotate 9 bits left CL times
D2 /3 RCR r/m8,CL Rotate 9 bits right CL times
D2 /4 SAL r/m8,CL Shift Arithmetic Left
D2 /4 SHL r/m8,CL Shift Logical Left
D2 /5 SHR r/m8,CL Shift Logical Right
D2 /7 SAR r/m8,CL Shift Arithmetic Right
D3 /0 ROL r/m32,CL Rotate 32 bits r/m32 left CL times
D3 /1 ROR r/m32,CL Rotate 32 bits r/m32 right CL times
D3 /2 RCL r/m32,CL Rotate 33 bits left CL times
D3 /3 RCR r/m32,CL Rotate 33 bits right CL times
D3 /4 SAL r/m32,CL Shift Arithmetic Left
D3 /4 SHL r/m32,CL Shift Logical Left
D3 /5 SHR r/m32,CL Shift Logical Right
D3 /7 SAR r/m32,CL Shift Arithmetic Right
D4 0A AAM ASCII adjust AX after multiplication
D5 0A AAD ASCII adjust AX before division
D6 SETALC Set ALC: undocumented
D7 XLAT m8 Table Look-up Translation
D8 /0 FADD m32real Add m32real to ST(0) and s.r. in ST(0)
D8 /1 FMUL m32real Multiply ST(0) by m32real and s.r.in ST(0)
D8 /2 FCOM m32real Compare ST(0) with m32real.
D8 /3 FCOMP m32real Compare ST(0) with m32real,pop r.stack.
D8 /4 FSUB m32real Sub m32real from ST(0) and s.r.in ST(0)
D8 /5 FSUBR m32real Sub ST(0) from m32real and s.r.in ST(0)
D8 /6 FDIV m32real Divide ST(0) by m32real and s.r.in ST(0)
D8 /7 FDIVR m32real Divide m32real by ST(0) and s.r.in ST(0)
D8 C0+i FADD ST(0),ST(i) Add ST(0) to ST(i) and s.r.in ST(0)
D8 C8+i FMUL ST(0),ST(i) Multiply ST(0) by ST(i) and s.r.in ST(0)
D8 D0+i FCOM ST(i) Compare ST(0) with ST(i).
D8 D1 FCOM Compare ST(0) with ST(1).
D8 D8+i FCOMP ST(i) Compare ST(0) with ST(i), pop
D8 D9 FCOMP Compare ST(0) with ST(1), pop
D8 E0+i FSUB ST(0),ST(i) Sub ST(i) from ST(0) and s.r.in ST(0)
D8 E8+i FSUBR ST(0),ST(i) Sub ST(0) from ST(i) and s.r.in ST(0)
D8 F0+i FDIV ST(0),ST(i) Divide ST(0) by ST(i) and s.r.in ST(0)
D8 F8+i FDIVR ST(0),ST(i) Divide ST(i) by ST(0) and s.r.in ST(0)
D9 /0 FLD m32real Push m32real
D9 /2 FST m32real Copy ST(0) to m32real
D9 /3 FSTP m32real Copy ST(0) to m32real and pop
D9 /4 FLDENV m14/28byte Load FPU environment from m14/m28
D9 /5 FLDCW m2byte Load FPU control word from m2byte
D9 /6 FNSTENV m14/28byte Store FPU env without
D9 /7 FNSTCW m2byte Store FPU control word without
D9 C0+i FLD ST(i) Push ST(i)
D9 C8+i FXCH ST(i) Exchange ST(0) and ST(i)
D9 C9 FXCH Exchange ST(0) and ST(1)
D9 D0 FNOP No operation is performed
D9 E0 FCHS Complements sign of ST(0)
D9 E1 FABS Replace ST(0) with its absolute value
D9 E4 FTST Compare ST(0) with 0.0
D9 E5 FXAM Classify value or number in ST(0)
D9 E8 FLD1 Push +1.0
D9 E9 FLDL2T Push log2 10
D9 EA FLDL2E Push log2 e
D9 EB FLDPI Push pi
D9 EC FLDLG2 Push log10 2
D9 ED FLDLN2 Push loge 2
D9 EE FLDZ Push +0.0
D9 F0 F2XM1 Replace ST(0) with 2**ST(0) - 1
D9 F1 FYL2X Replace ST(1) with ST(1)*log2ST(0) and pop
D9 F2 FPTAN Replaces ST(0) with its tangent push 1.0
D9 F3 FPATAN Repalces ST(1) with arctan(ST(1)/ST(0)) pop
D9 F4 FXTRACT Seperate value in ST(0) exp. and sig.
D9 F5 FPREM1 Replaces ST(0) with IEEE rem(ST(0)/ST(1))
D9 F6 FDECSTP Decrement TOP field in FPU status word.
D9 F7 FINCSTP Increment the TOP field FPU status r.
D9 F8 FPREM Replaces ST(0) with rem (ST(0)/ST(1))
D9 F9 FYL2XP1 Replace ST(1) with ST(1)*log2(ST(0)+1) pop
D9 FA FSQRT square root of ST(0)
D9 FB FSINCOS Compute sine and consine of ST(0) s push c
D9 FC FRNDINT Round ST(0) to an integer
D9 FD FSCALE Scale ST(0) by ST(1)
D9 FE FSIN Replace ST(0) with its sine
D9 FF FCOS Replace ST(0) with its cosine
DA /0 FIADD m32int Add m32int to ST(0) and s.r.in ST(0)
DA /1 FIMUL m32int Multiply ST(0) by m32int and s.r.in ST(0)
DA /2 FICOM m32int Compare ST(0) with m32int
DA /3 FICOMP m32int Compare ST(0) with m32int and pop
DA /4 FISUB m32int Sub m32int from ST(0) and s.r.in ST(0)
DA /5 FISUBR m32int Sub ST(0) from m32int and s.r.in ST(0)
DA /6 FIDIV m32int Divide ST(0) by m32int and s.r.in ST(0)
DA /7 FIDIVR m32int Divide m32int by ST(0) and s.r.in ST(0)
DA C0+i FCMOVB ST(0),ST(i) Move if below
DA C8+i FCMOVE ST(0),ST(i) Move if equal
DA D0+i FCMOVBE ST(0),ST(i) Move if below or equal
DA D8+i FCMOVU ST(0),ST(i) Move if unordered
DA E9 FUCOMPP Compare ST(0) with ST(1) and pop pop
DB /0 FILD m32int Push m32int
DB /2 FIST m32int Store ST(0) in m32int
DB /3 FISTP m32int Store ST(0) in m32int and pop
DB /5 FLD m80real Push m80real
DB /7 FSTP m80real Copy ST(0) to m80real and pop
DB C0+i FCMOVNB ST(0),ST(i) Move if not below
DB C8+i FCMOVNE ST(0),ST(i) Move if not equal
DB D0+i FCMOVNBE ST(0),ST(i) Move if not below or equal
DB D8+i FCMOVNU ST(0),ST(i) Move if not unordered
DB E2 FNCLEX Clear f.e.f. without checking for ..
DB E3 FNINIT Initialize FPU without ...
DB E8+i FUCOMI ST,ST(i) Compare ST(0) with ST(i), check o.v.set s.f.
DB F0+i FCOMI ST,ST(i) Compare ST(0) with ST(i), set status flags
DC /0 FADD m64real Add m64real to ST(0) and s.r.in ST(0)
DC /1 FMUL m64real Multiply ST(0) by m64real and s.r.in ST(0)
DC /2 FCOM m64real Compare ST(0) with m64real.
DC /3 FCOMP m64real Compare ST(0) with m64real,pop r.stack.
DC /4 FSUB m64real Sub m64real from ST(0) and s.r.in ST(0)
DC /5 FSUBR m64real Sub ST(0) from m64real and s.r.in ST(0)
DC /6 FDIV m64real Divide ST(0) by m64real and s.r.in ST(0)
DC /7 FDIVR m64real Divide m64real by ST(0) and s.r.in ST(0)
DC C0+i FADD ST(i),ST(0) Add ST(i) to ST(0) and s.r. in ST(i)
DC C8+i FMUL ST(i),ST(0) Multiply ST(i) by ST(0) and s.r.in ST(i)
DC E0+i FSUBR ST(i),ST(0) Sub ST(i) from ST(0) and s.r.in ST(i)
DC E8+i FSUB ST(i),ST(0) Sub ST(0) from ST(i) and s.r.in ST(i)
DC F0+i FDIVR ST(i),ST(0) Divide ST(0) by ST(i) and s.r.in ST(i)
DC F8+i FDIV ST(i),ST(0) Divide ST(i) by ST(0) and s.r.in ST(i)
DD /0 FLD m64real Push m64real
DD /2 FST m64real Copy ST(0) to m64real
DD /3 FSTP m64real Copy ST(0) to m64real and pop
DD /4 FRSTOR m94/108byte Load FPU status from m94 or m108 byte
DD /6 FNSAVE m94/108byte Store FPU environment to m94 or m108
DD /7 FNSTSW m2byte Store FPU status word at m2byte without
DD C0+i FFREE ST(i) Sets tag for ST(i) to empty
DD D0+i FST ST(i) Copy ST(0) to ST(i)
DD D8+i FSTP ST(i) Copy ST(0) to ST(i) and pop
DD E0+i FUCOM ST(i) Compare ST(0) with ST(i)
DD E1 FUCOM Compare ST(0) with ST(1)
DD E8+i FUCOMP ST(i) Compare ST(0) with ST(i) and pop
DD E9 FUCOMP Compare ST(0) with ST(1) and pop
DE /0 FIADD m16int Add m16int to ST(0) and s.r.in ST(0)
DE /1 FIMUL m16int Multiply ST(0) by m16int and s.r.in ST(0)
DE /2 FICOM m16int Compare ST(0) with m16int
DE /3 FICOMP m16int Compare ST(0) with m16int and pop
DE /4 FISUB m16int Sub m16int from ST(0) and s.r.in ST(0)
DE /5 FISUBR m16int Sub ST(0) from m16int and s.r.in ST(0)
DE /6 FIDIV m16int Divide ST(0) by m64int and s.r.in ST(0)
DE /7 FIDIVR m16int Divide m64int by ST(0) and s.r.in ST(0)
DE C0+i FADDP ST(i),ST(0) Add ST(0) to ST(i), s.r.in ST(i),pop r.stack
DE C1 FADDP Add ST(0) to ST(1), s.r.in ST(1),pop r.stack
DE C8+i FMULP ST(i),ST(0) Multiply ST(i) by ST(0), s.r.in ST(i) pop
DE C9 FMULP Multiply ST(1) by ST(0), s.r.in ST(1) pop
DE D9 FCOMPP Compare ST(0) with ST(1), pop pop
DE E0+i FSUBRP ST(i),ST(0) Sub ST(i) from ST(0), s.r. in ST(i) pop
DE E1 FSUBRP Sub ST(1) from ST(0), s.r.in ST(1) pop
DE E8+i FSUBP ST(i),ST(0) Sub ST(0) from ST(i), s.r.in ST(i) pop
DE E9 FSUBP Sub ST(0) from ST(1), s.r.in ST(1) pop
DE F0+i FDIVRP ST(i),ST(0) Divide ST(0) by ST(i), s.r.in ST(i) pop
DE F1 FDIVRP Divide ST(0) by ST(1), s.r.in ST(1) pop
DE F8+i FDIVP ST(i),ST(0) Divide ST(i) by ST(0), s.r.in ST(i) pop
DE F9 FDIVP Divide ST(1) by ST(0), s.r.in ST(1) pop
DF /0 FILD m16int Push m16int
DF /2 FIST m16int Store ST(0) in m16int
DF /3 FISTP m16int Store ST(0) in m16int and pop
DF /4 FBLD m80bcd Convert m80BCD to real and push
DF /5 FILD m64int Push m64int
DF /6 FBSTP m80bcd Store ST(0) in m80bcd and pop ST(0)
DF /7 FISTP m64int Store ST(0) in m64int and pop
DF E0 FNSTSW AX Store FPU status word in AX without
DF E8+i FUCOMIP ST,ST(i) Compare ST(0) with ST(i), check ovssf pop
DF F0+i FCOMIP ST,ST(i) Compare ST(0) with ST(i), set s.f. ,pop
E0 cb LOOPNE rel8 Dec count;jump if count # 0 and ZF=0
E0 cb LOOPNZ rel8 Dec count;jump if count # 0 and ZF=0
E1 cb LOOPE rel8 Dec count;jump if count # 0 and ZF=1
E1 cb LOOPZ rel8 Dec count;jump if count # 0 and ZF=1
E2 cb LOOP rel8 Dec count;jump if count # 0
E3 cb JECXZ rel8 Jump short if ECX register is 0
E4 ib IN AL,imm8 Input byte from imm8 I/O port address into AL
E5 ib IN EAX,imm8 Input byte from imm8 I/O port address into EAX
E6 ib OUT imm8,AL Output byte in AL to I/O(imm8)
E7 ib OUT imm8,EAX Output dword in EAX to I/O(imm8)
E8 cd CALL rel32 Call near, rel to n.inst
E9 cd JMP rel32 Jump near, relative,
EA cp JMP ptr16:32 Jump far, abs.add given in operand
EB cb JMP rel8 Jump short, relative,
EC IN AL,DX Input byte from I/O port in DX into AL
ED IN EAX,DX Input doubleword from I/O port in DX into EAX
EE OUT DX,AL Output byte in AL to I/O(DX)
EF OUT DX,EAX Output dword in EAX to I/O(DX)
F0 LOCK Asserts LOCK signal for duration ..
F1 INT1 ICEBP
F2 A6 REPNE CMPS m8,m8 Find matching bytes in m and m
F2 A7 REPNE CMPS m32,m32 Find matching dwords in m and m
F2 AE REPNE SCAS m8 Find AL, starting at ES:[(E)DI]
F2 AF REPNE SCAS m32 Find EAX, starting at ES:[(E)DI]
F3 6C REP INS m8,DX Input ECX bytes from port DX into ES:[(E)DI]
F3 6D REP INS m32,DX Input ECX dwords from port DX into ES:[(E)DI]
F3 6E REP OUTS DX,m8 Output ECX bytes from DS:[(E)SI] to port DX
F3 6F REP OUTS DX,m32 Output ECX dwords from DS:[(E)SI] to port DX
F3 A4 REP MOVS m8,m8 Move ECX bytes from DS:[(E)SI] to ES:[(E)DI]
F3 A5 REP MOVS m32,m32 Move ECX dwords from DS:[(E)SI] to ES:[(E)DI]
F3 A6 REPE CMPS m8,m8 Find nonmatching bytes in m and m
F3 A7 REPE CMPS m32,m32 Find nonmatching dwords in m and m
F3 AA REP STOS m8 Fill ECX bytes at ES:[(E)DI] with AL
F3 AB REP STOS m32 Fill ECX dwords at ES:[(E)DI] with EAX
F3 AC REP LODS AL Load ECX bytes from DS:[(E)SI] to AL
F3 AD REP LODS EAX Load ECX dwords from DS:[(E)SI] to EAX
F3 AE REPE SCAS m8 Find non-AL byte starting at
F3 AF REPE SCAS m32 Find non-EAX dword starting at
F4 HLT Halt
F5 CMC Complement CF flag
F6 /2 NOT r/m8 Reverse each bit of r/m8
F6 /3 NEG r/m8 Two's complement negate r/m8
F6 /4 MUL r/m8 Unsigned multiply
F6 /5 IMUL r/m8 Multiply
F6 /6 DIV r/m8 Unsigned divide AX by r/m8
F6 /7 IDIV r/m8 Divide
F6 /0 ib TEST r/m8,imm8 Logical Compare
F7 /2 NOT r/m32 Reverse each bit of r/m32
F7 /3 NEG r/m32 Two's complement negate r/m32
F7 /4 MUL r/m32 Unsigned multiply
F7 /5 IMUL r/m32 Multiply
F7 /6 DIV r/m16 Unsigned divide DX:AX by r/m16
F7 /6 DIV r/m32 Unsigned divide EDX:EAX by r/m32
F7 /7 IDIV r/m32 Divide
F7 /0 id TEST r/m32,imm32 Logical Compare
F8 CLC Clear CF flag
F9 STC Set Carry Flag
FA CLI Clear interrupt flag
FB STI Set Interrup Flag
FC CLD Clear DF flag
FD STD Set Direction Flag
FE /0 INC r/m8 Increment 1
FE /1 DEC r/m8 Decrement r/m8 by 1
FF /0 INC r/m32 Increment 1
FF /1 DEC r/m32 Decrement r/m32 by 1
FF /2 CALL r/m32 Call near, abs.ind.add. given in r/m32
FF /3 CALL m16:32 Call far, abs.ind.add. given in m16:32
FF /4 JMP r/m32 Jump near, abs.ind.in r/m32
FF /6 PUSH r/m32 Push r/m32
FF /r JMP m16:32 Jump far, abs.ind.in m16:32
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