HP Vectra Technical Reference Manual page 312

This functions under the following conditions:
" . • If greater than or equal to four clicks are pending then exit.
• If less than four clicks are pending then increment the count and exit.
• If no keyclicks are pending then execute the keyclick.
On Entry: BP
=
V_SYSTEM (12H)
AH
=
F_SND_CLICK (34H)
On Exit: AH
=
Return Status Code
Registers Altered: AH , BP, DS
Enables the beep function.
On Entry: BP
=
V_SYSTEM (12H)
AH
=
F_SND_BEEP__ENABLE (36H)
On Exit: AH
=
Return Status Code
Registers Altered: AH , BP, DS
Disables the beep function.
On Entry: BP
=
V_SYSTEM (12H)
AH
=
F_SND_BEEP_DISABLE (38H)
On Exit: AH
=
Return Status Code
Registers Altered: AH, BP, DS
System Drivers 303