Unitech MR350MKII manual 1A Set buzzer volume, Get Security state, Alarm On/Off

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(regsal);.h.

	}
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;

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