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);

INTERFACE LEVEL

     The functions described here are obsolete. For  the  outb(),
     outw(),    and    outl()    functions   use,   respectively,
     ddi_put8(9F), ddi_put16(9F), and ddi_put32(9F) instead.  For
     repoutsb(),  repoutsw(),  andrepoutsl(),  use, respectively,
     ddi_rep_put8(9F), ddi_rep_put16(9F),  and  ddi_rep_put32(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  or  interrupt  con-
     text.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Architecture                | x86                         |
    |_____________________________|_____________________________|
    | Stability Level             | Obsolete                    |
    |_____________________________|_____________________________|

SEE ALSO

     eisa(4), isa(4), attributes(5), ddi_put8(9F), ddi_put16(9F),
     ddi_put32(9F),      ddi_rep_put8(9F),     ddi_rep_put16(9F),
     ddi_rep_put32(9F), inb(9F)

     Writing Device Drivers