# Configuration information for the AT Ringnode, ISA Client Ringnode, Fiber AT Ringnode, or PC Ringnode

To configure the I/O location and ROM addresses for the AT, Fiber AT, and ISA Client Ringnodes, use switches 1 and 2 on Switchblock 2 (near the bottom edge of the board, and to the left).

To configure the I/O location and ROM address for the PC Ringnode, use switches 1 and 2 on Switchblock 1 (near the center of the board).

To enable a Smartrom, set switch 3 (on Switchblock 1 for the PC Ringnode, and Switchblock 2 for the AT, ISA Client, and Fiber AT Ringnodes), to ON.

Switch 1 | Switch 2 | I/O address | ROM address
ON | ON (Default) | 0A20-0A2F | CC000-CDFFF
OFF | ON | 1A20-1A2F | DC000-DDFFF
ON | OFF | 2A20-2A2F | CE000-CFFFF
OFF | OFF | 3A20-3A2F | DE000-DFFFF

Settings for switches 1 and 2