@node outportb, cpu
@subheading Syntax

@example
#include <pc.h>

void outportb(unsigned short _port, unsigned char  _data);
@end example

@subheading Description

Write a single byte to an 8-bit port.

This function is provided as an inline assembler macro, and will be
optimized down to a single opcode when you optimize your program.

@subheading Portability

@portability !ansi, !posix