Chapter 5

Chapter 5 - ADD Instruction ADD destination,source ¢...

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Unformatted text preview: ADD Instruction ¡ ADD destination,source ¢ destination = destination + source ¡ ADD AX,BX ¡ ADD SUM,EAX ¡ ADD EDX,ARRAY[EBX][ESI] ¡ ADD CL,5 ¡ ADD DL,[BX] ADC Instruction ¡ ADC destination,source ¢ destination = destination + source + carry ¡ ADC DX,BX ¡ ADC COUNT,ECX ¡ ADC EAX,ARRAY[EBX][ESI] XADD Instruction ¡ XADD destination,source ¢ destination = destination + source ¢ Source = original destination ¡ Assume: ¢ BX = 0AH ¢ DX = 11H ¡ After XADD DX,BX is executed: ¢ BX = 1BH ¢ DX = 0AH ¡ 80486 and Pentium instruction. INC Instruction ¡ INC operand ¢ operand = operand + 1 ¡ INC BX ¡ INC COUNT ¡ INC DWORD PTR [EBX] SUB Instruction ¡ SUB destination,source ¢ destination = destination - source ¡ SUB AX,BX ¡ SUB SUM,EAX ¡ SUB EDX,ARRAY[EBX][ESI] ¡ SUB CL,5 ¡ SUB DL,[BX] SBB Instruction ¡ SBB destination,source ¢ destination = destination - source - carry ¡ SBB DX,BX ¡ SBB COUNT,ECX ¡ SBB EAX,ARRAY[EBX][ESI] DEC Instruction ¡ DEC operand ¢ operand = operand - 1 ¡ DEC BX ¡ DEC COUNT ¡ DEC DWORD PTR [EBX] CMP Instruction ¡ CMP operand1,operand2 ¢ operand1 - operand2 ¢ Flags are updated and the result is discarded....
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Chapter 5 - ADD Instruction ADD destination,source ¢...

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