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  1. PianoMan

    PCI VI/O voltage for universal motherboard

    I'm working on a single board computer design with a PC104 Plus (PCI) connector. I would like it to accommodate both 3V and 5V cards. Though there are multiple VI/O pins, it looks like they all must be connected to the same voltage. What voltage do I connect those pins to for universal...
  2. PianoMan

    PCI VI/O voltage for universal motherboard

    I'm working on a single board computer design with a PC104 Plus (PCI) connector. I would like it to accommodate both 3V and 5V cards. Though there are multiple VI/O pins, it looks like they all must be connected to the same voltage. What voltage do I connect those pins to for universal...
  3. PianoMan

    PCI Slot Extension

    PCI slots are tied in parallel with one exception. As you suspected, each slot must be addressed or selected. The IDSEL signal allows for that. Each PCI device (including devices connected through slots) must be tied to one of the upper AD lines. According to the PCI spec, you start with...

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