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TABLE OF CONTENTS
CONTENTS
1. Specifications............................................................................................7
2. Introduction .............................................................................................8
2.1 Overview .............................................................................................8
2.2 What’s Included .................................................................................8
2.3 Factory Default Settings.....................................................................9
3. Card Setup................................................................................................10
3.1 RS-485 Enable Modes ........................................................................10
3.2 Address and IRQ Selection ...............................................................12
3.3 Line Termination...............................................................................12
3.4 Electrical Interface Selection ............................................................14
3.5 Clock Modes.......................................................................................15
3.6 Baud Rates and Divisors for the “Div 1” Mode ................................16
3.7 Baud Rates and Divisors for the “Div 2” Mode ................................18
4. Installation................................................................................................20
4.1 Setting Up the Operating System .....................................................20
4.1.1 Windows 3.1x ...........................................................................20
4.1.2 Windows 95/98 ........................................................................20
4.1.3 Windows NT .............................................................................21
4.1.4 DOS...........................................................................................21
4.1.5 Other Operating Systems ........................................................21
4.2 Installing the Hardware.....................................................................21
5. Troubleshooting ......................................................................................22
5.1 The Serial Utility Diskette ................................................................22
5.2 Calling Black Box..............................................................................23
5.3 Shipping and Packaging...................................................................23
Appendix A: Interrupt Handling ...............................................................24
A.1 The Purpose and Early History of Interrupts..................................24
A.2 Why Use an ISP?................................................................................25
Appendix B: Connector Pinouts ................................................................26
B.1 RS-232.................................................................................................26
B.2 RS-422/485 ........................................................................................27