Key to Codes
T = instruction tests flag
M = instruction modifies flag
(either sets or resets depending on operands)
0 = instruction resets flag
1 = instruction sets flag
-- = instruction's effect on flag is undefined
R = instruction restores prior value of flag
blank = instruction does not affect flag
Instruction OF SF ZF AF PF CF TF IF DF NT RF
AAA -- -- -- TM -- M
AAD -- M M -- M --
AAM -- M M -- M --
AAS -- -- -- TM -- M
ADC M M M M M TM
ADD M M M M M M
AND 0 M M -- M 0
ARPL M
BOUND
BSF/BSR -- -- M -- -- --
BT/BTS/BTR/BTC -- -- -- -- -- M
CALL
CBW
CLC 0
CLD 0
CLI 0
CLTS
CMC M
CMP M M M M M M
CMPS M M M M M M T
CWD
DAA -- M M TM M TM
DAS -- M M TM M TM
DEC M M M M M
DIV -- -- -- -- -- --
ENTER
ESC
HLT
IDIV -- -- -- -- -- --
IMUL M -- -- -- -- M
IN
INC M M M M M
INS T
INT 0 0
INTO T 0 0
IRET R R R R R R R R R T
Jcond T T T T T
JCXZ
JMP
LAHF
LAR M
LDS/LES/LSS/LFS/LGS
LEA
LEAVE
LGDT/LIDT/LLDT/LMSW
LOCK
LODS T
LOOP
LOOPE/LOOPNE T
LSL M
LTR
MOV
MOV control, debug -- -- -- -- -- --
MOVS T
MOVSX/MOVZX
MUL M -- -- -- -- M
NEG M M M M M M
NOP
NOT
OR 0 M M -- M 0
OUT
OUTS T
POP/POPA
POPF R R R R R R R R R R
PUSH/PUSHA/PUSHF
RCL/RCR 1 M TM
RCL/RCR count -- TM
REP/REPE/REPNE
RET
ROL/ROR 1 M M
ROL/ROR count -- M
SAHF R R R R R
SAL/SAR/SHL/SHR 1 M M M -- M M
SAL/SAR/SHL/SHR count -- M M -- M M
SBB M M M M M TM
SCAS M M M M M M T
SET cond T T T T T
SGDT/SIDT/SLDT/SMSW
SHLD/SHRD -- M M -- M M
STC 1
STD 1
STI 1
STOS T
STR
SUB M M M M M M
TEST 0 M M -- M 0
VERR/VERRW M
WAIT
XCHG
XLAT
XOR 0 M M -- M 0