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This week we look at IRQ's and how in recent years they have become less of a problem for PC builders than the days of IRQ conflicts of earlier chipsets!
IRQs and DMA
- What does IRQ stand for?
- What does DMA stand for?
- What has the higher priority IRQ, 3 or 8? Why?
- Where can you view the IRQ assignments in Windows?
- Why, with some devices, can two devices use the same IRQ?
- How does DMA improve system performance?
- List three devices that utilise DMA.
- What are some common symptoms of an IRQ conflict?
- What is PCI steering?
- What is Plug and Play?
- What legacy devices do not Plug & Play?
- How might you change the IRQ for these devices?
- How can you troubleshoot IRQ conflicts?
- More troubleshooting help
- PCI slots - Mastered and Shared?
- How IRQ and DMA have developed (Priority)?
- Symptoms of a conflict?
Important concepts to understand
DMA Table
IRQ's Explained
Further Reading
An IRQ problemAnother IRQ problem