Negibus to Posibus Converter
<UL>
<LI><b>dw08a</b> is a version of the DW08A Posibus to Negibus Converter backplane,
for reference.</LI>
<LI><b>dw08b</b> is a drawing that approximates DEC's DW08B Negibus to Posibus
Converter backplane.  It is still an "x" version because the part/pin numbering has not 
been checked against the DEC version.</LI>