HP Vectra Technical Reference Manual page 88

EVENT PROC FAR
CMP AH, F -,SR
JE PROCESS_EVENT
MOV AH, RS_UNSUPPORTEO
IRET
PROCESS_EVENT:
MOV AH, RS_SUCCESSFUL
IRET
EVENT ENOP
MOV AH, F_'O_CONTROL
MOV AL, SF_CREA TE_EVENT
MOV BP, V_LPOINTER
MOV OX, OS
PUSH CS
POP ES
LEA 51, CS:EVENT
PUSH OS
INT HP_ENTRY
POP OS
SF_EVENT _ON (AX
=
040AH)
" only support function F
-,SR
,. code
to
process data (see
,. pointer event record)
" return successful completion
,. want
to
use the current data
,. segment for event OS
,. current
CS is also segment
,. of event routine
,. get the IP of the event
" routine
,. save current OS
,. call extended
BIOS driver
This subfunction enables the event (parent) call to the pointer event routine
(V_EVENT_POINTER). The link to the pointer event routine must have already been established
using SF_CREATE_EVENT.
On Entry: AH
=
F_la_CONTROL (04H)
AL
=
SF_EVENT_ON (OAH)
BP
=
V_LPOINTER (OOCOH)
, . On Exit: AH
=
Return Status Code
Registers Altered: AX, BP, DS
Related Functions: SF_CREATE_EVENT, SF_EVENT_OFF
Input System and HP-HIL 79