PrPMC co-processor boards are installed on VME controllers mvme5100/mvme5500/mvme6100. Most of PMCs are PrPMC280 and PrPMC2800, although some older PrPMC880 may be in use as well.
PPMC280 Installation Guide (pdf)
PPMC280 VxWorks Installation Guide (pdf)
PPMC280 VxWorks Programmers Guide (pdf)