ports unit

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. Its 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.

Classes and records

tport	object	Type implemented to support integer-sized port access.
tportl	object	Type implemented to support Longint-sized port access.
tportw	object	Type implemented to support word-sized port access.

Variables

port	variable	Provide port access per integer.
portb	variable	Provide port access per byte.
portl	variable	Provide port access per longint.
portw	variable	Provide port access per word.