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I am working with an home made PXIe card. The PXie controller is a PEX8311. The EEPROM used to save name and configuration registers is a 93C66. I need more user space to save calibration data and replaced that unit with a 93C86 (same as the '66 but with more bits) but when I turn on the PXI chassis I don't see my card on device manager and then I cannot use it to work... somebody has an idea why?

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closed as unclear what you're asking by Dmitry Grigoryev, Daniel Grillo, uint128_t, Voltage Spike, Bence Kaulics Jun 29 '16 at 16:06

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • \$\begingroup\$ Seems to me than PXI bus protocols, enumeration and Plug and Play support from hardware is ON Topic here. \$\endgroup\$ – placeholder Jun 29 '16 at 15:10
  • \$\begingroup\$ This is like saying, I turn my car key but the engine won't crank. There are many reasons why the car wont start. Please provide information on your setup and be specific. Read electronics.stackexchange.com/help/how-to-ask If your question is not specific, it will be closed. Why? because it isn't answerable. This is a Q&A site. Please ask good questions. \$\endgroup\$ – Voltage Spike Jun 29 '16 at 15:56
  • \$\begingroup\$ Just a guess - your original EEPROM held an identifier that the device driver looks for. Without the correct identifier in the EEPROM the device driver cannot find your card. \$\endgroup\$ – Steve G Jun 29 '16 at 16:01

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