16 bit Assembly
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INT - Interupt Instruction
The INT instruction is used to generate an interupt or handle an exception. Interupts 0 to 32 are reserved for System and Processor use.
Calls to the BIOS or System are generally in 2 parts, Instruction followed by a byte number.
| Assembly Sample | Description | 16 bit Machine Code |
|---|---|---|
| INT 3 | ; Interupt 3 is used to trap exeptions | CC |
| INTO | ; Interupt 4 is activated if the Overflow flag has been set to 1 | CE |
| INT 22 (16h) | ; Interupt 22 is used keyboard access | CD 16h |
| INT 16 (10h) | ; Interupt 16 is used for screen access | CD 10h |
| INT 19 (13h) | ; Interupt 19 is used for disk drive access | CD 13h |
Last Update 06/02/2023