IBM 09-0572-000 manual Changing Software Option Settings, BIOS/MMIO Base Address

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
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