STA 2400H: It stores the content of the accumulator in the memory location 2400H.ģ2, 00, 24: The above instruction in the code form. In this addressing mode, the address of the operand (data) is given in the instruction itself. Intel 8085 uses the following addressing modes: These techniques are called addressing modes. There are different techniques to specify data for instructions. It may 1-byte, 2-byte or 3-byte instruction.Įach instruction requires some data on which it has to operate. The most instructions of this type operate on the content of the accumulator.ĭue to different ways of specifying data for instructions, the machine codes of all instructions are not of the same length. In some instructions, data is implied. The contents of the registers are the required data. Some instructions specify two registers.The content of the specified register is one of the operands. In some instructions, only one register is specified.The address of the memory location, I/O port or I/O device, where data resides, may be given in the instruction itself.8-bit or 16-bit data may be directly given in the instruction itself.The various techniques to specify data for instructions are: Next → ← prev Instruction Set of 8085 Instruction and Data Formats
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