IBM DS-2000 warranty Programm Able Option Select

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PROGRAMM

ABLE OPTION SELECT

The remaining POS registers are used for address and interrupt selections. These registers are programmed by the user through the IBM installation utility supplied with the PS/2. These registers are read/write but should not be written to by user software. The bit definitions of these registers are given in figures 16(a) and 16(b).

	+-------		+
D7		CHEN1	-----		Channel enable
	+-------		+
D6		INS11	--	+
	+-------		+	+--	Interrupt select
D5		INS10	--	+
	+-------		+
D4		ADS13	--	+
(a)	+-------		+
D3		ADS12
	+-------		+	+--	Address select
D2		ADS11
	+-------		+
D1		ADS10	--	+
	+-------		+
D0		CEN	---		Card enable
	+-------		+

	+-------		+
D7		CHEN2	-----		Channel	enable
	+-------		+
D6		INS21	--	+
	+-------		+	+--	Interrupt select
D5		INS20	--	+
	+-------		+
D4		ADS23	--	+
(b)	+-------		+
D3		ADS22
	+-------		+	+--	Address	select
D2		ADS21
	+-------		+
D1		ADS20	--	+
	+-------		+
D0		0	-----		Reserved
	+-------		+

Figure 16. DS-2000 POS implementation.

(a)POS location 102H

(b)POS location 103H

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Contents Serial Number Warranty InformationDate of Purchase Table of Contents Modem ListFifo II . Board Description IntroductionCPU Functional Description Functional Description III Functional Dlab Register DescriptionFunctional Description Interrupt Enable Register Functional Description Interrupt Identification Register Func Tional Description IID2 IID1 IID0 IPFunctional Description Fifo Control Register Line Control Register Parity selections STB STB WLS1 WLS0Functional Description Modem Control Register Functional Description Line Status Register FfrxTemt ThreData ready Indicates Is present Receive buffer Functional Description Modem Status Register Fifo Interrupt Mode Operation Functional Description Scratchpad RegisterBaud Rate Selection PC/XTAUD Rate Selection VIII. Programmable Option Select Addressing VI. AddressingVII Interrupts Programm Able Option Select Programmable Option Select Available interrupt levels IiiOUT PUT Configurations IX. Output Configurations Output Configurations Rclk Auxin Baudout AuxoutAuxin Rclk DTR RTSOutput Configurations Ternal Connections External Connections Installation XI. Installation XII Specifications