"default" DHV11 CSR?

All but the earliest KA650's have a built in SYSGEN CONFIG utility which you can check for such answers. Under VMS, this is how it's done: $ mcr sysgen SYSGEN> CONFIG DEVICE> dhv11 1 DEVICE> [control-Z] Device: DHV11 Name: TXA CSR: 760440* Vector: 300* Support: yes As a side note, SHOW DEV from the >>> console prompt won't list things like serial multiplexers anyway. I suspect, however, that you're having a NetBSD problem and not a hardware configuration problem, as NetBSD for the most part completely ignores issues involving "standard" CSR's and Vectors. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927