Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

DE4 not getting recognized in PCI Express slot

Hi, I installed the DE4 board in the PCIe x16 slot. The board gets powered up and i was able to download DE4_Fundamenatal.sof example. After this when i try to run the PCIe_Fundamental_Demo.exe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

altrayeh...,

Can you describe little more on your DE4 board problem? Altera's example doesn't work well on DE4 board. PCIe pins connections are same, but the reference clock (free running) isn't. DE4 board has a clock selection dip switch, and you need to select to use 100MHz. Then in Altera's example, change input clock speed to 100MHz. This should give least x1 lane connection at Gen 1.