IBM 16/4, Auto 16/4, Turbo 16/4 Token Ring and Compatible Adapters

Preconfiguration Information

Supported Settings

• The ROM location address (ISA and EISA) must be set to one of these values: 0xC2000, 0xC6000, 0xCA000, 0xCE000, 0xD2000, 0xD6000, 0xDA000.

• The shared RAM size should be set to 16 Kbytes (when configuring the card), but the Token Ring board will actually use 24 Kbytes. Keep this in mind when determining address space conflicts with other boards.

All cards that support Plug and Play:

16/4 Token Ring adapters (ISA):

Auto 16/4 Token Ring adapters (ISA):

Turbo 16/4 Token Ring adapters (ISA):

Known Problems and Limitations

• If you set the ROM location to 0xCE000, the Token Ring board will use 24 Kbytes starting at that location, so it will use all addresses in the range 0xCE000-D3FFF.

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  Note -

  In most systems, memory from C0000 to CB000 is used as video RAM.

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• Do not configure any device at I/O address 0x220-0x227 if there is a Token Ring in the system. For example, because the default address for a Sound Blaster card is 0x220, either move it to port address 0x240 or remove it from the system.

• If the Token Ring board is not connected to a hub on startup or netboot, an error message is displayed. In the case of a netboot, the boot process panics. Make sure that the Token Ring board is connected to a hub and that the hub is active.

• The adapter's receive speed is directly related to the amount of RAM the adapter is using. If your adapter performs poorly, use 32 Kbytes of memory instead of the more usual 8 Kbytes. Use the manufacturer's configuration program to set the card's RAM.

Configuration Procedure

1. Follow the manufacturer's documentation and use the manufacturer's setup software to configure the card.

   • Auto 16/4 and Turbo 16/4 Token Ring adapters in ISA systems only: Run the LANAID program that comes with the adapter.

2. Set up the Token Ring so that:

   • The first station has autosense DISABLED.

   • All other stations can have autosense ENABLED.

3. When the "Ring speed listening" feature is tested, make sure the Autosense parameter is turned on.