The Qniverter won't help you with this. The RH11 in your KS10 uses the Unibus in an 18-bit wide mode (see the Unibus handbook for details on how the parity bits are chosen to do this), but there are no corresponding signals on the Q-bus. The Qniverter therefore generates two parity bits based on the Q-bus 16-bit-wide data bus and subs these in on the Unibus side. No 3rd-party Unibus RH11-emulating controller that I ever met does 18-bit-wide data, either. If you're really serious about using your KS10, there are several companies (SETASI, in particular) with off-the-shelf Massbus replacement drive systems. Other companies (like Wilson Labs) make SCSI-to-Massbus converters. These, IMHO, are the solutions you should be looking at if you've decided that you don't want RM's and RP's in your computer room I know several folks running KS10's at home, in one case *two* KS10's with 4 big Massbus disks and two TU77's. I *did* warn you that you wanted 3-phase power run in before you got your KS10, didn't I ? :-) -- 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