Switch Settings For Non-PS/2 Token-Ring Adapters (32845)

SUMMARY

This article discusses switch settings for the IBM Token-Ring Network PC Adapter.

The following are switch-configurable parameters for the Token Ring adapter and conflicts that may occur:

The Interrupt Line address may conflict with devices such as the Microsoft Bus Mouse, hard drive controllers, serial and parallel ports.
The Base I/O address may conflict with expanded memory boards.
The Memory Map Address may conflict with the memory addresses used by expanded memory board drivers, 3270 cards, ESDI hard-drive controllers, and display adapters.

It may be necessary to change switch settings on the Token Ring Adapter and/or other cards in the system to avoid such conflicts.

MORE INFORMATION

The following are Interrupt Line switch settings:

   (Switch Block 1)
      Interrupt 2 - Switches 7 and 8 on (cascade to IRQ 9)
      Interrupt 3 - Switch 7 on, switch 8 off (normally COM2)
      Interrupt 6 - Switch 7 off, switch 8 on (normally floppy
                    controller)
      Interrupt 7 - Switches 7 and 8 off (normally LPT1)

The following are Base I/O Address switch settings:

   (Switch Block 2)
      Address A20h - switch 2 off
      Address A24h - switch 2 on

The following are Memory Map Address switch settings:

   (Switch Block 1)
      Address CC00 - Switches 1,4, and 5 off
                     Switches 2,3, and 6 on
      Address CC00 - Switches 1,4,5, and 6 off
                     Switches 2 and 3 on
      Address A400 - Switches 2 and 5 off
                     Switches 1,3,4, and 6 on
      Address C400 - Switches 1 and 5 off
                     Switches 2,3,4, and 6 on