man/man9f/outb.9f

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 OUTB 9F "Jan 16, 2006"
 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);


 INTERFACE LEVEL

The functions described here are obsolete. For the outb(), outw(),
and outl() functions use, respectively, ddi_put8(9F),
ddi_put8(9F), and ddi_put8(9F) instead. For repoutsb(),
repoutsw(), andrepoutsl(), use, respectively,
ddi_rep_put8(9F), ddi_rep_put8(9F), and ddi_rep_put8(9F)
instead.
 PARAMETERS
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.


 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, interrupt, or kernel context.
 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:


ATTRIBUTE TYPE ATTRIBUTE VALUE
Architecture x86
Interface Stability Obsolete


 SEE ALSO

isa(4), attributes(5), ddi_put8(9F), ddi_put8(9F),
ddi_put8(9F), ddi_rep_put8(9F), ddi_rep_put8(9F),
ddi_rep_put8(9F), inb(9F)

Writing Device Drivers