Changing Software Option Settings
4-5
If you are running Windows NT or Windows 95 and installing
a single adapter, the adapter’s default configuration can be
used. Install the driver as described in Chapter 6. If the
configuration is not suitable, you can change the settings by
following the procedure in this chapter.
The configuration program is DOS-based, so you must exit
Windows 95 or Windows NT and reboot your system under
DOS before using the configuration program.
Changing Software Option Settings
You should change the default settings of a 3C619C adapter
only if a conflict with another device or card exists.
This section does not apply to ISA adapters in an EISA PC. To
change software option settings in an EISA PC, use the EISA
configuration utility that came with the PC.
For information on the settings of other standard devices,
refer to the option Configuration/Diagnostic/Troubleshooting
on the main menu and select Commonly Used Interrupts and
I/O Base Addresses.
Table 4-2 lists the default settings for the adapter in 3Com
and IBM mode. Refer to Appendix B, “Specifications,” for
more information about each option.
Table 4-2
Initial 3Com and IBM Mode Option Settings
Option
3Com Default Setting
IBM Default Setting
Configuration Mode
3Com
IBM
I/O Base Address
A20h (first adapter)
A20h (primary adapter)
Interrupt Request Level
2(9)
2(9)
Ring Speed
16 Mbps
16 Mbps
BIOS/MMIO Base Address
CC000
CC000
RAM Page Size
16 K
16 K
Shared RAM Address Range
D8000–DBFFF
D8000–DBFFF
(continued)
