... (SPP) The parallel port in the original IBM PC, and any port that emulates the original port& apos;s design, is sometimes called the SPP, for standard parallel port, even though the original port had ... the parallel port. On older systems, the parallel port ison an expansion card with the video adapter. These should include a way to dis-able the video adapter, so you can use the parallel port ... 27Ah The first address in the range is the port& apos;s base address, also called the Data regis-ter or just the port address. The second address is the port& apos;s Status register, and the third...