What are IRQ, DMA & Address Ports? - Soundcard Memories [Byte Size] | Nostalgia Nerd

If you owned an IBM Compatible PC during the 80s or 90s then you'll likely know the ordeal of setting up peripherals such as Sound cards. Before diving into a game, you had to make sure that it was setup to recognise your Soundblaster or Adlib card. This was done through an I/O Port address, an IRQ and a DMA channel. This video explores exactly what these things are, how they relate to your PC and why Plug & Pray was introduced to make our lives easier.

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