Got a few of my numbers backwards- the boards are in reality An PDP-11/03 processor, LSI-11 quad-height M7264EB (does anything go out over the C/D fingers, or are they just there for stability?) DHV11-A 8-line async serial RXV11 (forgot the V originally...) either MSV11-B 4k RAM or MSV11-PL 256K ram (18-bit, but will the LSI-11 just ignore the extra or will it futz up?) Am I getting in too deep for a first-go at a PDP-11? These were offered in trade for a scope, and I don't have any other PDP stuff (it would timeshare a VAX 4200 chassis with the VAX, with a very advanced "card-pull" scheduler to prevent conflicts). Scott