INT 33,14 - Swap Interrupt Subroutines

AX = 14h

ES:DX = far pointer to user routine

CX = user interrupt mask:

�F-8�7�6�5�4�3�2�1�0� user interrupt mask in CX

� � � � � � � � +--- cursor position changed

� � � � � � � +---- left button pressed

� � � � � � +----- left button released

� � � � � +------ right button pressed

� � � � +------- right button released

+--------------- unused

on return:

CX = previous user interrupt mask

ES:DX = far pointer to previous user interrupt

- routine at ES:DX is called if an event occurs and the

corresponding bit specified in user mask is set

- routine at ES:DX receives parameters in the following

registers:

AX = condition mask causing call

CX = horizontal cursor position

DX = vertical cursor position

DI = horizontal counts

SI = vertical counts

DS = mouse driver data segment

BX = button state:

�F-2�1�0�

� � +--- left button (1 = pressed)

� +---- right button (1 = pressed)

+------ unused

- initial call mask and user routine should be restore on exit

from user program

- user program may need to set DS to it's own segment

- see ~INT 33,C~