> Careful, that would depend on the processor. On a x86 the I/O ports
> are not in the regular address space, that's why C compilers for PC's
> often have a separate library functions to access them.
>
> If the original question was indeed refering to a PC environment, then
> the answer will depend on the specific compiler and OS used.

The hardware will be a Pentium; the OS will be Linux, the compiler
(presumably) GNAT. Thing is, development is being done with Aonix 7.1 on NT4.

David Fisher
Fisher Research Corporation
frc@stellar1.com