On Jul 13, 2011, at 9:39 AM, <hvlems at zonnet.nl> wrote: Ah, so that's your specification for an interesting system: weird with DECnet :-) Apart from the DECnet requirement, if you want weird I don't think you can top a CDC 6000 series machine. The size can be a bit problematic, I suppose. My dream (about 10% complete) is to build a replica in an FPGA. I have the schematics to do it, it's just a whole lot of work... paul