outb(9F)

NAME

outb, outw, outl, repoutsb, repoutsw, repoutsd − write to an I/O port

SYNOPSIS

#include <sys/ddi.h>

#include <sys/sunddi.h>

void outb(int port, unsigned char value);

void outw(int port, unsigned short value);

void outl(int port, unsigned long value);

void repoutsb(int port, unsigned char ∗addr, int count);

void repoutsw(int port, unsigned short ∗addr, int count);

void repoutsd(int port, unsigned long ∗addr, int count);

ARGUMENTS

port A valid I/O port address.

value The data to be written to the I/O port.

addr The address of a buffer from which the values will be fetched.

count The number of values to be written to the I/O port.

INTERFACE LEVEL

Solaris x86 DDI specific (Solaris x86 DDI).

AVAILABILITY

x86

DESCRIPTION

These routines write data of various sizes to the I/O port with the address specified by port.

The outb(), outw(), and outl() functions write 8 bits, 16 bits, and 32 bits of data respectively, writing the data specified by value.

The repoutsb(), repoutsw(), and repoutsd() functions write multiple 8-bit, 16-bit, and 32-bit values, respectively. count specifies the number of values to be written. addr is a pointer to a buffer from which the output values are fetched.

CONTEXT

These functions may be called from user or interrupt context.

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