You can use MSD.EXE (Microsoft Diagnostics) to find out the base address of your PC's Parallel Printer Port(s). Plus lots of other information about your system.
If you do not already have this MS-DOS program, it is available as
Take a look at the README file
Note: This site can get very busy (= SLOW), but keep trying.
last updated: 18-Apr-97 Ian Harries <ih@doc.ic.ac.uk>