8086 Assembly Language INT 16h Keyboard Interrupt 
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Murugan Andezuthu Dharmaratnam | 
13 February 2021 | 
8402
13 February 2021 | 8402
Int 16h is a bios interrupt used to provide keyboard services. This interrupt is responsible for obtaining basic keyboard functionality. Interrupt 16h or the keyboard interrupt is one of the most frequently used interrupts while coding in 8086 assembly language. Following is the list of services of int 16h.
List of services of the INT 16h
| Function Number | Description |
| AH=00h | KEYBOARD - GET KEYSTROKE (Read key press) |
| AH=01h | KEYBOARD - CHECK FOR KEYSTROKE (Get the State of the keyboard buffer) |
| AH=02h | KEYBOARD - GET SHIFT FLAGS (Get the State of the keyboard) |
| AH=03h | KEYBOARD - SET TYPEMATIC RATE AND DELAY (Establish repetition factor) |
| AH=05h | KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (Simulate a keystroke) |
| AH=0Ah | KEYBOARD - GET KEYBOARD ID (Get the ID of the keyboard) |
| AH=10h | KEYBOARD - GET ENHANCED KEYSTROKE (Read expanded keyboard character) |
| AH=11h | KEYBOARD - CHECK FOR ENHANCED KEYSTROKE (Obtain status of the expanded keyboard buffer) |
| AH=12h | KEYBOARD - GET EXTENDED SHIFT STATES (Get expanded keyboard status) |