VOGONS


First post, by Kahenraz

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I have a motherboard where I'm installing a Sound Blaster for the sole purpose of accessing its Yamaha OPL3 chip on port 0x388. This means I don't need the IRQ or DMA channels, but they still need to be configured (the are no jumpers to disable them).

The motherboard I'm using this on does not support DMA, and leaving the card in Device Manager, even disabled, causes problems with stability. Things are fine if I remove it from the device tree, but I want to be sure that hiding it from the system doesn't create other problems. If I am not using any of the Sound Blaster features, to what extend do I need to guard against other devices using its assigned (via jumpers) IRQ and DMA channels?

Is it necessary to reserve its IRQ or DMA channels for stability, so that other devices are not assigned the same ones? I will never configure any software to use this device, so this is specifically regarding whether ignoring any configured IRQ and DMA on the hardware will create problems elsewhere.