User`s manual

LIST OF FIGURES
Figure 1. Default address and IRQ settings 2
Figure 2. Diagram of QS-100M / ES-100M 3
Figure 3. Port address map 5
Figure 4. Examination of a serial port base address 6
Figure 5. Serial port base I/O address selection switches 7
Figure 6. Interrupt level (IRQ) selection 8
Figure 7. Enabling the Interrupt Status Register 9
Figure 8. Interrupt Status Register contents 9
Figure 9. Use of DTEs and DCEs in a communications link 10
Figure 10. Cabling requirements for RS-232-C devices 10
Figure 11. QS-100M / ES-100M connector definitions 11
Figure 12. QS-100M / ES-100M output connectors 11
Figure 13. Auxiliary signal configuration jumpers 12
Figure 14. Output connector configuration 13
Figure 15. Serial port register address map for 16450/16550 15
Figure 16. Interrupt Enable Register bit definitions 16
Figure 17. Interrupt Identification Register bit definitions 17
Figure 18. Interrupt Identification Register bit decoding 17
Figure 19. 16550 FIFO Control Register bit definitions 18
Figure 20. Line Control Register bit definitions 19
Figure 21. Modem Control Register bit definitions 20
Figure 22. Line Status Register bit definitions 21
Figure 23. Modem Status Register bit definitions 22
Figure 24. Input clock frequency options 25
Figure 25. Divisor latch settings for common baud rates 26