Int 1B  C - Keyboard - Control-break Handler                               [B]

Desc:  this interrupt is automatically called when INT 09 determines that
     Control-Break has been pressed

Note:  normally points to a short routine in DOS which sets the Ctrl-C flag,
     thus invoking INT 23h the next time DOS checks for Ctrl-C.

See Also: INT 23,MEM 0040h:0071h