Posibus to Negibus Converter <UL> <LI><b>dw08a2s</b> is a two-sided board based on DEC's DW08A Posibus Converter backplane.</LI> <LI><b>dw08aholes</b> is a version of dw08a2s with un-needed cutout holes, and only 6 mil traces (too thin).</LI> <LI><b>dw08a</b> is dw08aholes with the power traces beefed up, and is the version that matches the prototypes. It has a mechanical interference fit at the right edge.</LI> <LI><b>dw08aRev2</b> is a version of the dw08a backplane with the interference fit fixed, and the un-needed holes removed.</LI> <LI><b>dw08aRev3</b> is a version of the dw08a backplane that fixes another interference fit, having to do with the backplane being more than 3U tall.</LI> <LI><b>dw08a4lyr</b> is a four layer version, with all the traces beefed up.</LI>