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COM-2(PC)F v
List of Figures
Figure 3.1. Names of Board Components and Default Factory
Settings ..................................................................... 23
Figure 3.2. I/O Address DIP Switch............................................ 25
Figure 3.3. Interrupt Level Settings............................................. 26
Figure 3.4. Rear Panel of IBM-PC/AT ......................................... 28
Figure 3.5. Removing the Cover.................................................. 28
Figure 3.6. Expansion Slot Cover................................................ 29
Figure 3.7. Anchoring the COM-2(PC)F..................................... 30
Figure 3.8. Interface Connectors (CN1 and CN2)........................ 31
Figure 3.9. CN1 and CN2 Pin Assignments ................................ 31
Figure 3.10.Example Connection to a Modem ............................. 32
Figure 3.11.Example Connection to a PC..................................... 32
Figure 3.12.Example Connection to a Device............................... 32
Figure 4.1. Circuitry Diagrams.................................................... 34
Figure 4.2. COM-2(PC)F Block Diagram.................................... 34
Figure 6.1. Floppy Disk Files...................................................... 40
Figure 6.2. 9-pin Connector Diagram.......................................... 44
Figure 6.3. Flowchart of Sample Program 1................................ 45
Figure 6.4. Flowchart of Sample Program 2................................ 46
Figure 6.5. Flowchart of Sample Program 3................................ 47
Figure 6.6. Flowchart of Sample Program 4................................ 48
Figure 6.7. Flowchart of Sample Program 5................................ 49
Figure 6.8. Flowchart of Sample Program 6................................ 50
Figure 6.9. Flowchart of Sample Program 7................................ 51
Figure 6.10.Flowchart of Sample Program 8................................ 52