Assembly  Links

ADC - Add with Carry
ADD - Add
AND - Bitwise AND
CALL - Call Routine
CLC - Clear Carry Flag
CLD - Clear Direction
CLI - Clear Interupt Flag
CMPS - Compare
CMP - Compare
DEC - Decrement
DIV - Divide
HLT - Halt
IDIV - Divide Signed
IMUL - Multiply Signed
INC - Increment
INS - Input
INT - Interupt
IN - Input
IRET - Interupt Return
JMP - Jump
J - Jump Conditional
LAHF - Load Flags
LDS - Load Far Pointer
LEA - Store Address
LES - Load Far Pointer
LFS - Load Far Pointer
LGS - Load Far Pointer
LODSB - LODSW - Load
LODS - Load
LOOP - Loop
LSS - Load Far Pointer
MOVSB - Move Far
MOVSW - Move Far
MOVS - Move
MOV - Move
MUL - Multiply
NEG - Negate
NOP - No Operation
NOT - Bitwise NOT
OR - Bitwise OR
OUTS - Output
OUT - Output
POP - Stack Retrieval
PUSH - Stack Store
RCL - Roll Left
RCR - Roll Right
REP - Repeat
RET - Return
ROL - Roll Left
ROR - Roll Right
SAHF - Save Flags
SAL - Shift Left
SAR - Shift Right
SBB - Subtract with Borrow
SCAS - Compare
SET - Set Condition
SHL - Shift Left
SHR - Shift Right
STC - Set Carry Flag
STD - Set Direction
STI - Set Interupt Flag
STOSB - STOSW - Store
STOS - Store
SUB - Subtract
TEST - Compare
XADD - Exchange and And
XCHG - Swap
XOR - Bitwise XOR

DEC  -  Decrement Instruction

The DEC instruction is used to reduce the operand by one.
This command has 2 parts, Instruction, then either a Register or a memory address.

Assembly Sample	Description	16 bit Machine   Code
DEC AX	;  Decrements a Register	48
DEC [BX]	;  Decrements a memory address	FF 0F