HP Vectra Technical Reference Manual page 128

On Exit: AH
=
Return Status Code
AL
=
Contents· of specified register
Registers Altered: AX, BP, DS
This function outputs a buffer to a specific HP-HIL device register. The HP-HIL controller and
devices are capable of data transfer at rates up to 6500 bytes per second. If the number of bytes
in the buffer is greater than the number the HP-HIL device can handle, this function will transfer
as many bytes as possible to the device, and adjust the value in CX to reflect the number of bytes
left in the buffer (not sent to the device).
On Entry: AH
=
F_PUT_BUFFER (OAH)
BX
=
Device address indicator
Bit
OFH-OEH
ODH
OCH
OBH-OOH
Value Definition
Reserved
1
Valid address is present in DH
o
Reserved for future enhancement, currently returns
RS_FAIL
Valid register is present in DL
Reserved
CX
=
Number of bytes in buffer
DH
=
HP-HIL device address
DL
=
HP-HIL device register (0-127)
BP
=
V_HPHIL (0114H)
ES:SI
=
Pointer to buffer containing data to output
On Exit: AH
=
Return Status Code
CX
=
0 means all the data in buffer is transferred, otherwise the number of bytes
left in buffer.
Registers Altered: AX, CX, BP, DS
, . 4.3.3.3 V_SINPUT (BP
=
002AH)
The V_SINPUT driver dispatches ISR events generated by the HP-HIL controller to the appropriate
physical driver, thus providing an entry point into the Input System for non-HP-HIL devices (i.e.,
RS-232 mice, tablets, etc.). It also provides a number of functions which support device mapping.
Input
System
and HP-HIL 119