Does the v3.1 PCI Express Core support simulation with ModelSim?
Yes. As of version 3.1 Revision 1 of the core, a ModelSim script is included. For the v3.1 PCI Express core, please see (Xilinx Answer 22320) for more details. For the v1.3 PCI Express PIPE core, please see (Xilinx Answer 22322) for more details.