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.\" -*- nroff -*-
.\"
.\" Copyright (c) 1995 Paul Gortmaker
.\" (gpg109@rsphy1.anu.edu.au)
.\" Wed Nov 29 10:58:54 EST 1995
.\" 
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
.\" USA.
.\"
.\"
.TH OUTB 2 "29/11/1995" "Linux" "Manual do Programador Linux "
.SH NOME
outb, outw, outl, outsb, outsw, outsl \- porta de sada
.br
inb, inw, inl, insb, insw, insl \- port de entrada
.br
outb_p, outw_p, outl_p, inb_p, inw_p, inl_p \- intervalo de I/O
.sp
.SH DESCRIO
Esta famlia de funes  usada para fazer uma porta de entrada e sada de baixo nvel.
Elas so projetadas inicialmente para uso interno do kernel,
mas podem se usadas no espao de usurio, dando as seguintes informaes
.I adicionalmente
ao que  dado para
.I outb(9)
.sp
Voc compila com \fB\-O\fP, \fB\-O2\fP ou parecido. As funes
So definidas com macros dentro da linha, e no sero substitudas quando
No tiver otimizao habilitada, causando referncias no resolvidas em tempo de ligao.
.sp
Use
.I ioperm(2)
ou, alternativamente,
.I iopl(2)
para descobrir se o kernel permite aplicaes no espao de usurio acessar
as portas de E/S mencionads. No aceitando a aplicao terminar com
falha de segmentao.
.SH "DE ACORDO COM"
\fBoutb\fP e comandos similares so especficos do cada hardware. Os argumentos
.I port
e
.I value
so em ordem oposta do que a maioria das implementaes DOS.
.SH "VEJA TAMBM"
.BR ioperm (2),
.BR iopl (2)

.SH TRADUZIDO POR LDP-BR em 21/08/2000.
\&\fR\&\f(CWAndr L. Fassone Canova <lonelywolf@blv.com.br> (traduo)\fR
\&\fR\&\f(CWxxxxxxxxxxxxxxxxxxxxxxxxx <xxx@xxxxxx.xxx.xx> (reviso)\fR