Appendix B: PC Serial Ports
Workarounds and Solutions to the
IRQ Conflict Problem
It is important to remember that the IRQ conflict is a problem in hardware; it
cannot be resolved in software alone. Consequently, there are only three
alternatives for working around or resolving it:
Workaround 1: Configure your serial devices such that you use only two
at any one time, and those two use serial ports with unique IRQs.
This is the simplest workaround to the IRQ conflict problem, but it does not
solve the underlying conflict. The idea is to assign your peripheral devices to
your available serial ports in such a way as to avoid using any devices
simultaneously which might conflict. For example, if you have a serial mouse
on COM1 (IRQ4), a fax/modem card on COM2 (IRQ3), and your PassageWay
adapter on COM3 (IRQ4), you cannot effectively use PassageWay Solution
since you need to use your mouse under Windows while PassageWay
applications are running.
A better arrangement would be to move PassageWay Solution to COM4
(IRQ3), which could then be safely used with your mouse on COM1 (IRQ4). In
this case, the workaround is to avoid trying to use PassageWay Solution at the
same time you use the fax/modem on COM2, since the conflict now would be
over IRQ3 (COM2 and COM4).
Workaround 2: Replace one or more of your serial peripherals with
equivalent devices which do not require a serial port.
The idea with this approach is to eliminate the conflict by reducing the number
of peripherals in your system which require serial ports. For example,
replacing a serial mouse with a bus mouse (that is, a mouse which requires its
own add-in card) would make another serial port available that could then be
used by another device.
B-7
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Страница 15: ...Contents C Appendix C Running AT TBuzz in Export via Paste Link DDE Mode C 1 Glossary GL 1 Index Index i x ...
Страница 21: ...xvi ...
Страница 28: ...Installing and Setting Up PassageWay Solution Figure 2 1 PassageWay Solution Components 2 3 ...
Страница 65: ...Installing and Setting Up PassageWay Solution 2 40 ...
Страница 93: ...Using AT TBuzz 3 28 ...
Страница 96: ...Using AT TCall Figure 4 1 Untitled AT TCall Window 4 3 ...
Страница 97: ...Using AT TCall Figure 4 2 Components of an AT TCall Window 4 4 ...
Страница 100: ...Using AT TCall Figure 4 4 Desktop with 10 20 Quick Dials and Card Hidden 4 7 ...
Страница 101: ...Using AT TCall Figure 4 5 Desktop with 25 50 Quick Dials and Card Displayed 4 8 ...
Страница 102: ...Using AT TCall Figure 4 6 Desktop with 25 50 Quick Dials and Card Hidden 4 9 ...
Страница 144: ...Using AT TCall Figure 4 26 Printed Cards With and Without the Notes 4 51 ...
Страница 177: ...Using AT TCall 4 84 ...
Страница 181: ...Using AT TSet Figure 5 2 Components of the AT TSet Window 5 4 ...
Страница 247: ...Using Log Viewer 6 20 ...
Страница 250: ...Using AT TConnect Figure 7 1 AT TConnect Window 7 3 ...
Страница 252: ...Using AT TConnect Figure 7 2 Events Log Dialog Box 2 When finished select the OK button 7 5 ...
Страница 265: ...Using AT TConnect 7 18 ...
Страница 287: ...Troubleshooting 9 18 ...
Страница 288: ...Appendix A Menu Trees This appendix contains the menu trees for the PassageWay applications A 1 ...
Страница 289: ...Appendix A Menu Trees Figure A 1 AT TBuzz Menu Tree A 2 ...
Страница 290: ...Appendix A Menu Trees Figure A 2 AT TCall Menu Tree A 3 ...
Страница 291: ...Appendix A Menu Trees Figure A 3 AT TSet Menu Tree A 4 ...
Страница 292: ...Appendix A Menu Trees Figure A 4 Log Viewer Menu Tree A 5 ...
Страница 293: ...Appendix A Menu Trees Figure A 5 AT TConnect Menu Tree A 6 ...
Страница 305: ...Appendix B PC Serial Ports B 12 ...
Страница 311: ...Glossary GL 4 ...
Страница 318: ...560 201 103 AT T 1993 AT T ...