define homogeneous and heterogenenous parts orcad
When you've created the library package for your FPGA, you made several parts inside that package. Probably, they were called U?A, U?B, U?C, etc. When you place the part, you get a "Place Part" dialog. At the bottom of this dialog is a frame called "Packaging". You should select each part (A, B, C, etc; one at a time) and place them. If you get designators U1A, U2B, U3C, instead of U1A, U1B, U1C, just edit the numeric parts of the designators in the schematic.
Hope it helps. Hope, I understood your question correctly.
BTW, here a good resource on OrCAD: **broken link removed**
- Nick