Category: vendor-specific BIOS extensions
INT 61 - Atari Portfolio - MUTE STATES AH = 18h AL = function 00h get mute state 01h set mute state 02h get key click state 03h set key click state 04h get beep state 05h set beep state 06h get alarm state 07h set alarm state 08h get DTMF duration 09h set DTMF duration DL = new state ("set" functions) (00h off [muted], 01h on) Return: DL = current state ("get" functions) (00h off [muted], 01h on) SeeAlso: AH=15h"Portfolio",AH=16h"Portfolio",AH=17h"Portfolio" SeeAlso: AH=19h"Portfolio"