Appendix D
Troubleshooting and Common Questions
©
National Instruments Corporation
D-5
PCMCIA Serial for Windows 98/95
Common Questions
How can I determine which type of serial hardware I have installed?
1.
Select
Start»Settings»Control Panel
.
2.
Double-click on the
System
icon.
3.
Select the
Device Manager
tab, and click on the
View devices by type
button at the top of the page.
4.
Double-click on the
Ports (COM & LPT)
icon. A list of installed
ports appears.
What do I do if the diagnostic test fails with an error?
Refer to the
Troubleshooting Diagnostic Messages
section earlier in this
appendix for specific information about what might cause the test to fail.
How can I determine which port is associated with COM
x
?
Refer to the section
Determine Which Physical Port Is Associated with
, in
.
How can I name National Instruments serial ports COM1, COM2,
COM3, or COM4?
Table D-1 lists standard DOS-base addresses for serial ports.
In most cases, Windows 98/95 does not assign names COM1 through
COM4 to the serial hardware. Rather, it names the ports starting with
COM5. If you assign any of the base addresses in Table D-1 to a National
Instruments serial port, Windows 98/95 automatically changes the COM
port name to the corresponding one listed in this table. You do not need to
change the IRQ setting for this name change to occur. To change the base
Table D-1.
Standard DOS-Based Addresses
COM Port
Base Address
COM1
3f8
COM2
2f8
COM3
3e8
COM4
2e8
Summary of Contents for PCMCIA Serias
Page 1: ...PCMCIA 485 2...
