HP Vectra Technical Reference Manual page 159

F16_INQUIRE (AX
=
6FOOH)
This subfunction determines whether or not the extended HP functions are available. If the HP
functions are available, the BX register will be set to 4850H (which is the ASCII characters 'HP').
On Entry: AX
=
F16_INQUIRE (6FOOH)
BX
=
Any value except 4850H, 'HP'.
On Exit: BX
=
'HP'
Registers Altered: BX
F16_DEF~TTR
(AX
=
6F01H)
This subfunction reports the default typematic rate and delay values for the keyboard. A pointer
to a four byte buffer is returned. The bytes in the buffer are defined in table 5.7.
Table 5.7
INT 16H Typematic Buffer Format
Byte Function
o
Delay before repeat action starts for all keys, except the Cursor Control Pad.
1 Typematic Repeat rate for all keys, except the Cursor Control Pad.
2 Delay before repeat action starts for all Cursor Control Pad keys.
3 Typematic Repeat rate for all Cursor Control Pad keys.
Table 5.8 summarizes the typematic rate and delay values defined for each data byte accepted in
the typematic buffer by the INT 16H driver. Note that the typematic rates are the same for both
the HP cursor control pad and the non-cursor pad keys while two delay values are provided (one
for each group).
150 Keyboard