Diode Network, 7 diodes, both ends brought to pins
<UL>
<LI><b>R001A</b> is a drawing of DEC's R001A.</LI>
<LI><b>R001B</b> is a drawing of DEC's R001B.</LI>
<LI><b>R001X</b> is a 'modernized' R001.</LI>