IBM DS-2000 warranty List, Fifo, Modem

				LIST		OF	FIGURES
Figure	1.	DS-2000 board layout						2
Figure	2.	16550 internal registers						3
Figure	3.	Interrupt		enable		register		4
Figure	4.	Interrupt		identification register . .				5
Figure	5.	Interrupt		source		identification . . .		6
Figure	6.	FIFO	control		register			7
Figure	7.	FIFO receiver trigger levels						7
Figure	8.	Line	control		register			8
Figure	9.	Parity options						9
Figure	10.	Word length and stop bit options . . .						9
Figure	11.	MODEM control register . . . . . . . . 10
Figure	12.	Line status register . . . . . . . . . 11
Figure	13.	MODEM	status		register			13
Figure	14.	Input	clock		frequency		options . . . .	15
Figure	15.	Divisor latch options						15
Figure	16.	POS implementation . . . . . . . . . . 17
Figure	17.	Base address locations . . . . . . . . 18
Figure	18.	Interrupt request levels . . . . . . . 18
Figure	19.	Output control block diagram . . . . . 21
Figure	20.	J2/J3	layout		and	settings		21
Figure	21.	Auxiliary		channel configuration
		(handshake mode)						22
Figure	22.	Auxiliary		channel configuration
		(external clock mode) . . . . . . . 22
Figure	23.	Auxiliary		channel configuration
		(loopback mode) . . . . . . . . . . 22
Figure	24.	Output connections . . . . . . . . . . 23
Figure	25.	Output signal definitions						23

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