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1A Set buzzer volume INT 21H
Entry Parameters: AH = 0x1A
BH = 3
AL = 0 ;set LOW volume
1 ;set MEDIUM volume
2 ;set HIGH volume
Returned Values: None
void TD_beeper_vol(int status)
{
regs.h.ah= 0x1A ;
regs.h.al= (unsigned char)status;
regs.h.bh= 3;
int86(0x21,®s,®s);
return(regs.h.al);
}
1B Get Security state INT 21H
Entry Parameters: AH = 0x1B
BH = 7
Returned Values: AL = 0 ;close
1 ;open
int TD_security_status()
{
regs.h.ah = 0x1B;
regs.h.bh = 7;
int86(0x21,®s,®s);
return((int)regs.h.al);
}
1B Alarm On/Off INT 21H
Entry Parameters: AH = 0x1B
BH = 8
AL = 0 ;disable
1 ;enable
Returned Values: None
void TD_alarm(int status)
{
regs.h.ah = 0x1B;
regs.h.al = (unsigned char)status;