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Programming
2-5
Table 2-1 Instruction Set
Mnemonic Instruction Name
AAA ASCII adjust for addition
AAD ASCII adjust for division
AAM ASCII adjust for multiplication
AAS ASCII adjust for subtraction
ADC Add byte or word with carry
ADD Add byte or word
AND Logical AND byte or word
BOUND Detects values outside prescribed range
CALL Call procedure
CBW Convert byte to word
CLC Clear carry flag
CLD Clear direction flag
CLI Clear interrupt-enable flag
CMC Complement carry flag
CMP Compare byte or word
CMPS Compare byte or word string
CWD Convert word to doubleword
DAA Decimal adjust for addition
DAS Decimal adjust for subtraction
DEC Decrement byte or word by 1
DIV Divide byte or word unsigned
ENTER Format stack for procedure entry
ESC Escape to extension processor
HLT Halt until interrupt or reset
IDIV Integer divide byte or word
IMUL Integer multiply byte or word
IN Input byte or word
INC Increment byte or word by 1
INS Input bytes or word string
INT Interrupt
INTO Interrupt if overflow
IRET Interrupt return
JA/JNBE Jump if above/not below or equal
JAE/JNB Jump if above or equal/not below