INT 20H Terminate a program ◄superseded►
INT 21H DOS Services
INT 22H Terminate address ──────────────┐
INT 23H Control-Break address ├ Address Vectors Only
INT 24H Critical Error Handler address ─┘
INT 25H/26H Absolute Disk Read/Write
INT 27H Terminate but Stay Resident ◄superseded►
INT 28H DOS Idle (safe to pop up) ◄wasUndoc►
INT 29H DOS Internal Fast Screen Write ◄undocumented►
INT 2eH Perform DOS Command ◄undocumented►
INT 2fH Multiplex (DoubleSpace, spooler, TSR control, other APIs)
INT 31H DPMI DOS Protected Mode Interface Services
INT 33H Mouse Support
INT 67H EMS Expanded Memory Manager (HIMEM.SYS)
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