IBM 09-0572-000 manual 3Com mode, 16 Mbps 3Com mode, 4 Mbps IBM mode, 16 Mbps, IBM mode, 4 Mbps

4-4 CHAPTER 4: STANDARD INSTALLATION AND CONFIGURATION

8When prompted, select the operating mode and speed. The 3C619C adapter offers the following choices:

■3Com mode, 16 Mbps

■3Com mode, 4 Mbps

■IBM mode, 16 Mbps

■IBM mode, 4 Mbps

3Com mode provides you with the features of IBM mode as well as additional I/O address options and IRQ channels that reduce the possibility of conflicts with other peripherals on the PC. IBM mode is compatible with existing IBM drivers. Table 4-1 shows the characteristics of 3Com mode and IBM mode.

Table 4-1 3Com Mode versus IBM Mode

IBM Mode		3Com Mode
Supports existing IBM 16/4 drivers		Requires 3Com drivers for expanded
		configuration settings. Supports
		existing IBM 16/4 drivers when the
		I/O Base Address = A20 or A24 and
		the IRQ = 2,3,6, or 7.
Maximum of 2 adapters		Maximum of 6 adapters
4	IRQ levels	8 IRQ levels
2	I/O Base addresses (A20h, A24h)	32 I/O Base addresses

When you select the configuration mode, the I/O Base Address, Interrupt Request Level, Ring Speed, BIOS/MMIO Base Address, and Shared RAM Address Range options on the adapter are automatically configured to settings that do not conflict with any other device in your PC. Upon successful completion of configuration, a message appears. Press any key to continue.

To change the settings manually, follow the steps in the next section, “Changing Software Option Settings.”

To install the network driver, proceed to Chapter 5, “Installing Network Drivers,” or Chapter 6, “Installing the Network Driver for Windows.”