Article 160812 of comp.os.vms: Hello, I have a MicroVax System Options Guide and here are the switch settings for the KDA disk controller: ------------------------------------------------------------------- Adress bits: A12 A11 A10 A09 A08 A07 A06 A05 A04 A03 A02 Switches: W1 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 ------------------------------------------------------------------- CSR addresse: Standard 17772150 1 0 1 0 0 0 1 1 0 1 0 ------------------------------------------------------------------- Possible settings for additional MSCP devices: 17760334 0 0 0 0 0 1 1 0 1 1 1 17760354 0 0 0 0 0 1 1 1 0 1 1 17760374 0 0 0 0 0 1 1 1 1 1 1 ------------------------------------------------------------------- 1 = switch on or M7164 jumper W1 in. 0 = switch off or M7164 jumper W1 out. Hope this helps. Regards R. Wingert