Allen Martin wrote:
Nothing inside the chipset should be decoding port 80 writes. It's
possible this board has a port 80 decoder wired onto the board that's
misbehaving. I've seen other laptop boards with port 80 decoders
wired onto the board, even if the 7 segment display is only populated
on debug builds.
This is very helpful. So the next question is there something on the
laptop mainboard.
Any idea how to look for such a thing? I am not averse to taking the
laptop apart to look at the mainboard.
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- References:
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops
- More info on port 80 symptoms on MCP51 machine.
- Re: More info on port 80 symptoms on MCP51 machine.
- Re: More info on port 80 symptoms on MCP51 machine.
- Re: More info on port 80 symptoms on MCP51 machine.
- Re: More info on port 80 symptoms on MCP51 machine.
- RE: More info on port 80 symptoms on MCP51 machine.
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