On 14 Apr 1998, Kjetil Thuen wrote:
> mouse where the modem should be and vice versa. This was solved by
> swapping the serial ports in the bios. Now both the mouse and the
...
> I am no hardware wizard, but doesnt this suggest that linux is using
> the bios for more than the boot process?
No. The kernel is not making calls to the BIOS. Instead, the system's
chipset is remapping the memory addresses used by the ports on the system.
When Linux accesses these ports (directly) the settings in the BIOS
control what responds. The BIOS setup program is in charge of this
remapping. In effect, remapping the ports in the BIOS setup is the
equivalent of setting jumpers, except that the "jumpers" are really
firmware settings stored in non-volatile RAM.
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