HP Vectra Technical Reference Manual page 83

On Entry: AH
=
F_'SR (OOH)
DH
=
Data Type
DL
=
Physical device driver's vector index.
ES:O
=
Pointer to physical device driver header and Physical Describe Record.
BP
=
V_LPOINTER (OOCOH)
For Button Event:
BX
=
Button information.
Bit
OFH-08H
07H
06H-OOH
Value Definition
Reserved
1 Button up
o
Button down
Button number (0-7)
For Motion Event:
BX
=
X axis motion in raw data form.
CX
=
Y axis motion in raw data form.
On Exit: AH
=
Return Status Code
Registers Altered: AX, BP, DS
Related Functions: SF_CREATLEVENT, SF_EVENT_ON, SF_TRACK-ON
SF _INIT (AX = 0200H)
This subfunction is called to initialize the driver. Refer to Section 9 for a complete discussion of
the protocol used in data space allocation.
On Entry: AH
=
F _SYSTEM (02H)
AL
=
SF_INIT (OOH)
BX
=
"Last used DS" in HP Data Area
BP
=
V_LPOINTER (OOCOH)
On Exit: AH
=
Return Status Code
ax
=
New "Iast used DS" in HP Data Area
Registers Altered: AX, BX, BP, DS
74 Input System and HP-HIL