Messages in this thread | | | From | (Alan Cox) | Subject | Re: ioport conflict with "dma page reg" (0x80) | Date | Mon, 15 Mar 1999 23:50:08 +0000 (GMT) |
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> I notice that the kernel reserves 0x80-0x9F for "dma page reg" (see > /proc/ioports), but I can't find anywhere in the source that 0x80 is > actually written to explicitly. > > I need to find who's stomping on 0x80 and a way to map it somewhere > else.
The kernel uses 0x80 for all the I/O slow down macros. Edit include/asm-i386/io.h change the 0x80 to another safe port (keyboard will not do) and rebuild
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