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Originally Posted by Wildrover
Thanks for all the replies so far.
I have a newish PC with 1GB Athlon processor.
The broadband is through an ethernet adaptor which is USB connected.
I have been rooting around in the system setup and have found the following:
DMA is on Channel 2 for floppy disk controller and Channel 4 for Direct Memory Access controller
I have 4 devices sharing the same IRQ: 2 USB ports, sound card and NVIDIA GeForce 2 (graphics card?). This doesn't quite stack up as the reason.
I have PCI bus and DMA controller sharing the same I/O address. I am not a hardware expert (!!) and PCI is a video adaptor isn't it?
Any further thoughts?
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There is a seperate setting, confusingly also called 'DMA' that is accessed via the properties for the CD drive in device manager, it's a check box on the 'settings' page - if it hasn't got a tick in, then tick it, & click 'OK', which will then tell you you have to restart your pc. After the restart, have a look to see that the box is still ticked.
I wouldn't worry about the interrupt sharing, modern pc's do this by design.