operand access

Why DAA Instruction Is To Be Written Just After Add Instruction?

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Why DAA Instruction Is To Be Written Just After Add Instruction? The DAA (Decimal Adjust after Addition) instruction allows addition of numbers represented in 8-bit packed BCD code. It is used immediately after normal addition instruction operating on BCD codes. This instruction assumes the AL register as the source and the destination, and hence it

What Is Implicit Addressing Mode With Example?

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What Is Implicit Addressing Mode With Example? There are certain instruction, which operate on the content of the accumulator ,such instruction do not require the address of the operand. Examples are : CMA, RAL and RAR. What do you mean by implicit addressing mode? The implied addressing mode, also called the implicit addressing mode (x86