![]() The table below is a small assembly language program with a description of the opcode and operand components during execution. Some instructions do not require an operand and some may require more than one operand. When looping, jumps to the RAM memory addressĪn operand (written using hexadecimal notation) provides the data itself, or the location where the data to be processed is stored. The book presents an integrated treatment of the hardware and software aspects of the 80 microprocessors and 8051. It is of greater use even for the AMIE and IETE studentsthose who do not have the facility of classroom teaching and laboratory practice. Subtracts accumulator contents from the contents at a RAM address Acces PDF Sheet Microprocessor 8086 Opcode Sheet Free Internet sources. ![]() Transfers a number from RAM to the accumulatorĪdds accumulator contents to the contents at a RAM address Transfers a number from the accumulator to RAM Inputs a value, then stores the value in the accumulator ![]() Assembly language opcode mnemonics and instructions The opcode is the instruction that is executed by the CPU and the operand is the data or memory location used to execute that instruction. ![]() Writing assembly language programs Opcodes and operandsĮach assembly language statement is split into an opcode and an operand. ![]()
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