osi dbi info needed

Found the problem, the +5 volt line on the siemans 8 inch drive is shorted - causing the power supply to shutdown. also i inserted the cpu boards (yes two of them) backwords(the osi backplane slot headers are not keyed)(joy, more rebuilding). i am really interested in info on "d & b computer systems" did they make more then clone boards for the osi systems? does anyone have the dip switch tables for the two banks of switches on the dbi cpu boards. the boards i am looking for info on are the dbi db1 (cpu mem and console board) and the d&b db-pfdco1 (fdc/comms board). the fdc board has a 50 pin header for the floppy's but also has a 40 pin header below it. can a 5-1/4 or 3 1/2 floppy drive be interfaced to a osi system? also what is the pinout of the osi/siemans fdd-100-8 e interface connector? it seems to be almost the same as the shugart 50 pin - but how does it work with the read data pin not used in the interface? Bill __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - Let the expert host your site http://webhosting.yahoo.com