HP Vectra Technical Reference Manual page 91

Table 4.8
Tablet Driver Function Code Summary
Vector Func. Function
Address Value Equate Definition
OOBAH
V_LTABLET Application interface to Tablet
OOBAH 00
F_ISR
Logical Interrupt
OOBAH 02
F_SYSTEM System functions
OOBAH
02/00
SF_INIT Initialize the driver data area
OOBAH
02/02
SF_START Start driver
OOBAH 02/04
SF_REPORT_STATE Report state of device
OOBAH
02/06
SF_VERSION_DESC Report driver version number
OOBAH
02/08
SF_DEF
---A
TrR Set default logical scaling attributes
OOBAH 02/0A
SF_G ET
---A
TrR Get scaling attributes
OOBAH 02/0C
SF_SET
---A
TrR Set scaling attributes
OOBAH 04
F_IO_CONTROL
1/0
Control Functions
OOBAH 04/00
SF_LOCK
Unsupported
OOBAH
04/02
SF_UNLOCK
Unsupported
OOBAH
04/04
SF_TRACLON Turns cursor track on
OOBAH 04/06
SF_TRACLOFF Turns cursor track off
OOBAH
04/08
SF_CREATE_EVENT Establish a new routine to be called on
logical device events
OOBAH 04/0A
SF_EVENT_ON Enable event call to parent driver
OOBAH
04/0C
SF_EVENT_OFF Disable event call to parent driver
OOBAH
04/0E
SF_CLIPPING_ON Enable logical device clipping
OOBAH 04/10
SF_CLIPPING_OFF Disable logical device clipping
OOBAH 06
F_SAMPLE Report absolute position of GID
Tablet Driver Functions Definition
F_ISR (AH
=
OOH)
This function receives an ISR Event record from one of the physical GID drivers. The calling driver
has handled the physical interrupt and updated the Physical Describe Record to reflect the event.
This function translates the physical event into the logical coordinate system and calls its parent,
V_EVENT_TABLET, (if EVENT is enabled). In addition, this function passes the event to
V_STRACK so that the sprite can be updated (if TRACK is enabled). This function is a response
to a logical hardware interrupt and not user callable.
82 Input System and HP-HIL