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SubjectRe: ioport conflict with "dma page reg" (0x80)
Hi,

Wall, Tim wrote:
>
> I have a single-board computer with a hardware watchdog which uses I/O
> addresses 0x80, 0x443, and 0x444.
>
> The problem is that something else in the system is writing to 0x80,
> which resets/disables the watchdog.

0x80 is sometimes used as a dummy port. Try changing the SLOWN_DOWN_IO
macro in io.h (defining SLOW_IO_BY_JUMPING should be enough).
And floppy.h also contains (in 2.2.x unused) code that writes to port 0x80.

Ciao, ET.


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