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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.

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Solution

Sure, I can describe the input/output operations in assembly language step by step:

i. Input a character from the keyboard without echo:

  1. Load the address of the input buffer into a register.
  2. Set up the necessary interrupt service routine to handle keyboard input.
  3. Enable interrupts.
  4. Wait for the interrupt to occur.
  5. Retrieve the character from the input buffer.
  6. Store the character in a register or memory location for further processing.

ii. Send a character to the monitor:

  1. Load the character to be sent into a register.
  2. Set up the necessary interrupt service routine to handle monitor output.
  3. Enable interrupts.
  4. Send the character to the monitor by writing it to the appropriate output port or memory location.
  5. Wait for the interrupt to occur (optional).
  6. 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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