minix/lib/libsys/arch/i386/sys_out.c

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#include "syslib.h"
/*===========================================================================*
* sys_out *
*===========================================================================*/
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int sys_out(port, value, type)
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int port; /* port address to write to */
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u32_t value; /* value to write */
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int type; /* byte, word, long */
{
message m_io;
m_io.DIO_REQUEST = _DIO_OUTPUT | type;
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m_io.DIO_PORT = port;
m_io.DIO_VALUE = value;
return _kernel_call(SYS_DEVIO, &m_io);
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}