|[Overview][Classes][Variables][Index]||Reference for unit
'ports' (#rtl)| Access to hardware ports The ports unit
implements the port constructs found in Turbo Pascal. It uses
classes and default array properties to do this. The unit exists
on linux, os/2 and dos. It is implemented only for compatibility
with Turbo Pascal. It's usage is discouraged, because using
ports is not portable programming, and the operating system may
not even allow it (for instance Windows). Under linux, your
program must be run as root, or the IOPerm call must be set in
order to set appropriate permissions on the port access.