IBM DS-2000 warranty A . Interrupt, Enable, Register, Functional, Description

FUNCTIONAL			DESCRIPTION
	A . INTERRUPT				ENABLE	REGISTER
	+-------	+
D7		0
	+-------	+
D6		0
	+-------	+
D5		0
	+-------	+
D4		0
	+-------	+
D3		EDSSI	-----		MODEM status
	+-------	+
D2		ELSI	-----		Receiver	line status
	+-------	+
D1		ETBEI	-----		Transmitter holding register empty
	+-------	+
D0		ERBFI	-----		Received	data available
	+-------	+
Figure 3. Interrupt enable register bit definitions.
EDSSI	-	MODEM	Status		Interrupt:
		When set (logic 1), enables interrupt on clear to
		send, data set ready, ring indicator, and data
		carrier		detect.
ELSI	-	Receiver		Line Status		Interrupt:
		When set (logic 1), enables interrupt on overrun,
		parity, and framing errors, and break indication.
ETBEI	-	Transmitter			Holding Register Empty Interrupt:
		W h e n s e t ( l o g i c 1 ) , e n a b l e s i n t e r r u p t o n
		transmitter			register	empty.
ERBFI	-	Received		Data Available Interrupt:
		When set (logic 1), enables interrupt on received
		data	available or FIFO trigger level.

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