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Two byte Instructions
In these instruction the first byte specifies the operations code and the second byte specifies the operand. To identify two byte instructions one must observe followings things.
The instruction have 8 bit data as their operand and have I n their mnemonics for example MVI ADI, SUI etc are two byte instructions ( but not LXI as it has 16 bit data as its operand).
The instructions have 8 bit port address as their operand e g IN and OUT instructions.
Since each memory locations may store only byte hence two byte instructions require two memory locations to store them in memory.
Suppose instruction MVI, A, 8 bit data is to be stored at memory location 2000 H. It will be stored as shown below.
For Sign Flag JP ( jump on plus ) Jump on minus ) Instructions JP transfer the execution of the program to the specified memory address if sign flag is set (S=
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