Operation code (opcode) is unique for each instruction and
contains the information about the operation, registers to be used, memory to be used etc.
The 8085 microprocessor has 8—bit opcode.
Data transfer instructions do not affect the flag register.
The 8085 microprocessor instructions can perform only four arithmetic operations :
(i) Addition (ii) Subtraction(iii) Increment and (iv) Decrement
The compare instructions actually computes the value of the accumulator
contents minus other operand.
The original value of the operands are not changed. Based on the results, flags are affected.
The branch instructions allow the 8085 microprocessor to change the sequence of the
program, either unconditionally or under certain test conditions.
According to length criteria 8085 instruction set has three types :
I byte, 2 byte and 3 byte instructions.
Five types of addressing modes are defined by the 8085 microprocessor instructions :
(i) Immediate Addressing Mode
(ii) Register Addressing Mode
(iii) Implicit Addressing Mode
(v) Indirect Addressing Mode
(iv) Direct Addressing Mode and
Flow chart is a graphical tool that allows programmer to represent various actions
pictorially which are to be performed.
Queries Solved.
What is assembly language example?What is assembly language in programming?
What are the types of assembly language?
Why do we use assembly language to program microprocessor?
Where is assembly language used?
How can I learn assembly language?
Should I learn Assembly?
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