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>Accessing Port Space</H1
><P
> Accesses to this space are provided through a set of functions
which allow 8-bit, 16-bit and 32-bit accesses; also
known as byte, word and long. These functions are
<TT
CLASS="FUNCTION"
>inb</TT
>, <TT
CLASS="FUNCTION"
>inw</TT
>,
<TT
CLASS="FUNCTION"
>inl</TT
>, <TT
CLASS="FUNCTION"
>outb</TT
>,
<TT
CLASS="FUNCTION"
>outw</TT
> and <TT
CLASS="FUNCTION"
>outl</TT
>.
</P
><P
> Some variants are provided for these functions. Some devices
require that accesses to their ports are slowed down. This
functionality is provided by appending a <TT
CLASS="FUNCTION"
>_p</TT
>
to the end of the function. There are also equivalents to memcpy.
The <TT
CLASS="FUNCTION"
>ins</TT
> and <TT
CLASS="FUNCTION"
>outs</TT
>
functions copy bytes, words or longs to the given port.
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