The PCI BUS has ________ interrupt request lines.

The PCI BUS has ________ interrupt request lines.

Right Answer is:

4

SOLUTION

  • The PCI BUS has 4 interrupt request lines.
  • By writing into a device configuration register, the software instructs the device as to which of these lines it can use to request an interrupt.
  • If a device requires initialization, the initialization code is stored in a ROM in the device interface.
  • (This is a different ROM from that used in the configuration process.) The PCI software reads this code and executes it to perform the required initialization.
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