Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I am developing hardware with a PCIe interface based on a FPGA. When I reprogram the FPGA, it looses its BAR settings (BAR0, BAR1, etc.). How can I force Windows to a) rescan the PCI (and therefore PCIe) bus and b) reassign the BAR settings.

This isn't a hardware issue; this is a Windows issue. It's roughly what one would need to to to hot-swap a card (if such is supported).

Edit 9/2/11: I'm not a software engineer, so I'm looking for something that can be done at the user level, including by administrator.

share|improve this question

2 Answers 2

I know drivers in Windows can be marked as "boot-time" wherein Windows won't allow you to uninstall and reinstall the driver. If you changed the pci.sys driver to a different type, possibly you could uninstall and reinstall it from Device Manager. Good luck.

share|improve this answer

Deleting a device in Device Manager will lead to re-detection after the next boot (if the device is still present) – boot time is the only time buses without hot removal are scanned.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.