Compaq COM-2(PC)F, RS-232C

Appendix

COM-2(PC)F48

Sample Program 4

This GW-BASIC sample program demonstrates the receive-data

capability of COM-2(PC)F in Compatible mode. Using this

[OPEN "COM1 : 9600, N, 8, 2, DS" AS #1] command opens the

RS-232C communication file (COM1). It then reads the data from

COM1 and outputs to CRT through CN1.

YesNo

Set

Communication File

Display File Buffer's

Data On CRT

START

File Buffer = 0

Figure 6.6. Flowchart of Sample Program 4

Contents

Main Copyright Trademarks Product Configuration Table of Contents Page List of Figures Page List of Tables Page 1. Introduction About the COM-2(PC)F Board Support Software of Option Features Limited Three-Year Warranty How to Obtain Service Liability About the Manual Page 2. How to Use the Board Compatible Mode and Enhanced Mode Compatible Mode Enhanced Mode Operating under Windows Me/98 Page Page Page Operating under Windows 95 Page Page Page Operating under Windows 2000 Page Page Page Operating under Windows NT Operating under Windows 3.1 Operating under MS-DOS Page Page Page I/O Address Setting Hardware Setup COM-2(PC)F 25 Setting Procedure The I/O address is set using a DIP switch (SW1) on the board. Figure 3.2. I/O Address DIP Switch Table 3.1. I/O Address Settings Figure 3.2 shows the CN1 bace I/O address set to 2A0H and the CN2 bace I/O address set to 2A8H. Interrupt Level Setting Setting Procedure Page Mounting Method Page Page Hardware Setup COM-2(PC)F 31 Connecting the External Devices Figure 3.9. CN1 and CN2 Pin Assignments Figure 3.8. Interface Connectors (CN1 and CN2) Connecting the Cable System Reference COM-2(PC)F 33 4. System Reference 160.0 [mm] Specifications Table 4.1. Specifications Circuitry Diagrams Figure 4.2. COM-2(PC)F Block Diagram Figure 4.1. Circuitry Diagrams Block Diagram The following is a block diagram of the COM-2(PC)F interface board. 5. Troubleshooting QUESTIONS: Is the pilot light on? Did the system boot up? Does your program work? Does the sample program work? Is the input data accurate? Still have a probrem? Page Page 6. Appendix A. Sample Programs (for MS-DOS) COM-2(PC)F Diskette Sample Programs Page COM-2(PC)F42 Switch and Jumper Settings Table 6.2. Switch and Jumper Settings of Sample Program 1, 2, and 5 Table 6.3. Switch and Jumper Settings of Sample Program 3, 4, 6, and 10 COM-2(PC)F 43 Table 6.4. Switch and Jumper Settings of Sample Program 7 Table 6.5. Switch and Jumper Settings of Sample Program 11 COM-2(PC)F44 Cable Connection Figure 6.2. 9-pin Connector Diagram Page Page Page Page COM-2(PC)F 49 Figure 6.7. Flowchart of Sample Program 5 Page Page COM-2(PC)F52 Figure 6.10. Flowchart of Sample Program 8 COM-2(PC)F 53 Figure 6.11. Flowchart of Sample Program 9 Page Page B. Notes on Developing Driver Software Internal Registers Baud Rate Selection LSI Recovery Time Page Various Aspects of Interrupt Handling in Enhanced Mode and Compatible Mode Page COM-2(PC)F62 C. The Details on NS16550 Table 6.9. NS16550's Register (Short from National Semiconductor's data book) < 1 / 2 > COM-2(PC)F 63 Table 6.9. NS16550's Register (Short from National Semiconductor's data book) < 2 / 2 > D. Difference Between the COM-2(PC)F and COM-2(PC)V 7. Index Page Page CONTEC Group