Assembly Language Questions Medium
In Assembly Language, there are several types of input/output instructions that can be used to interact with the computer's peripherals and devices. These instructions allow the program to read data from input devices and write data to output devices. The different types of input/output instructions in Assembly Language include:
1. Input instructions:
- IN: This instruction reads a byte or word from an input port specified by the operand and stores it in a register.
- INS: This instruction reads a string of bytes or words from an input port specified by the operand and stores them in memory.
2. Output instructions:
- OUT: This instruction sends a byte or word from a register to an output port specified by the operand.
- OUTS: This instruction sends a string of bytes or words from memory to an output port specified by the operand.
3. Direct Memory Access (DMA) instructions:
- IN/OUT with DMA: These instructions allow direct memory access for high-speed data transfer between memory and I/O devices without involving the CPU.
4. Interrupt instructions:
- INT: This instruction generates a software interrupt, which can be used to communicate with the operating system or other software components for input/output operations.
5. String instructions:
- LODS: This instruction loads a byte or word from a string in memory into a register, and increments the memory pointer.
- STOS: This instruction stores a byte or word from a register into a string in memory, and increments the memory pointer.
These input/output instructions provide the necessary functionality to interact with various devices and peripherals, enabling the program to handle input data and produce output results.