These topics contain information about interrupt routines.
Check the Interrupt Tables topic for a comprehensive list of software and hardware interrupts.
| INT 5 | Print Screen |
| INT 8 | System timer |
| INT 9 | Keyboard Interrupt (Hardware Handler) |
| INT 10 | Video BIOS Services |
| INT 11 | BIOS Equipment Determination / BIOS Equipment Flags |
| INT 12 | Memory Size Determination |
| INT 13 | Diskette BIOS Services |
| INT 14 | BIOS Asynchronous Communications Services |
| INT 15 | System BIOS Services |
| INT 16 | Keyboard BIOS Services |
| INT 17 | Printer BIOS Services |
| INT 19 | Bootstrap Loader |
| INT 1A | System and Real Time Clock BIOS Services |
| INT 1B | BIOS Ctrl-Break Handler Address |
| INT 1C | System Timer Tick (User Routine) |
| INT 1D | Video Initialization Parameter Table Vector |
| INT 1E | Disk Initialization Parameter Table Vector |
| INT 1F | Graphics Display Character Bit Map Table |
| INT 20 | Program Terminate |
| INT 21 | DOS Function Dispatcher |
| INT 22 | Program Terminate |
| INT 23 | Control-Break Exit Address |
| INT 24 | Critical Error Handler |
| INT 25 | Absolute Disk Read |
| INT 26 | Absolute Disk Write |
| INT 27 | Terminate and Stay Resident |
| INT 28 | DOS Idle Loop / Scheduler (Undocumented) |
| INT 29 | DOS Fast Character I/O (Undocumented 2.x+) |
| INT 2A | DOS Network Critical Section and NETBIOS |
| INT 2E | Execute Command Using Base Level Command Interpreter |
| INT 2F | DOS Multiplex Interrupt |
| INT 33 | Mouse Function Calls |
| INT 4A | RTC Alarm Handler Vector |
| INT 67 | Expanded Memory Specification |
| INT 70 | Real Time Clock Interrupt (XT 286,AT,PS/2) |