Unitech MR350MKII manual Activate/Deactivate Relay ports INT 09H, Open, Close, 1A Buzzer On/Off

regs.h.ah = (unsigned char)port;

regs.h.al = (unsigned char)type;

int86(0x08,®s,®s);

return((int)regs.h.al);

}

Activate/Deactivate Relay ports INT 09H

Entry Parameters:	AH = 0	;select Relay #1
	1	;select Relay #2
	AL = 0	;deactivate selected Relay contact
		OPEN
	1	;activate selected Relay contact
Returned Values:	None	CLOSE

void TD_relay(int port,inttatus)

{

regs.h.ah=(unsigned char)port; regs.h.al= (unsigned char)status; int86(0x09,®s,®s); return(regs.h.al);

}
1A Buzzer On/Off	INT 21H
Entry Parameters:	AH = 0x1A
	BH = 1
	AL = 0	;disable buzzer
	1	;enable buzzer
Returned Values:	None

void TD_buzzer(int status)

{

regs.h.ah=0x1A;

regs.h.al= (unsigned char)status; regs.h.bh=1; int86(0x21,®s,®s); return(regs.h.al);

}

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