Routines for accessing I/O ports are in /usr/include/asm/io.h (or linux/include/asm-i386/io. ... I/O port accesses). The syntax is ioperm(from, num, turn_on) ...
#include <linux/ioport. ... I/O ports by using the /dev/port device file. ... c are a minimal tool for reading and writing ports from the command line, in user ...
I/O (Input/Output) ports (also referred to as I/O addresses) are unique locations in memory reserved for communications between the CPU and specific ...
Routines for accessing I/O ports are in /usr/include/asm/io.h (or linux/include/asm−i386/io.h in the kernel source distribution). The routines there are inline.
ioport commands for the shell. This is the implementation of inb, inw, inl, outb, outw and outl commands. It may help to analyze some superio chips or ...
I/O ports are the means by which drivers communicate with many devices out there—at least part of the time. This section covers the various functions ...