Describe the following input/output operations in assembly language:i: Input a character from the keyboard without echo.ii. Send a character to the monitor.
Question
Describe the following input/output operations in assembly language:i: Input a character from the keyboard without echo.ii. Send a character to the monitor.
Solution
Sure, I can describe the input/output operations in assembly language step by step:
i. Input a character from the keyboard without echo:
- Load the address of the input buffer into a register.
- Set up the necessary interrupt service routine to handle keyboard input.
- Enable interrupts.
- Wait for the interrupt to occur.
- Retrieve the character from the input buffer.
- Store the character in a register or memory location for further processing.
ii. Send a character to the monitor:
- Load the character to be sent into a register.
- Set up the necessary interrupt service routine to handle monitor output.
- Enable interrupts.
- Send the character to the monitor by writing it to the appropriate output port or memory location.
- Wait for the interrupt to occur (optional).
- Continue with the next instruction or wait for further input/output operations.
Please note that the specific instructions and registers used may vary depending on the assembly language and hardware platform being used.
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