INT 23h (35)             Break Address

Contains the address to which control is passed in response to a
Break-key action. When a program is executed, DOS copies this address
into offset 0Eh through 11h of the Program Segment Prefix.

The Break action is generated either by Ctrl-C or (on the IBM PC
family and many clones) Ctrl-Break. Normally, DOS checks for a Break
only during character I/O functions. With extended Break checking in
effect (see Interrupt 21h, Function 33h), DOS checks for Break during
any I/O function.

See also: INT 23h
See also: 33h

INT 23h (35) Break Address