In short, Bi-directional is the older protocol, and is only as the name implies. ECP is "Extended Capabilities Port" and is newer. It's also bi-directional but faster. Your printer has to be able to support ECP in order for the printer port to be set to that protocol. Some printers that are ECP capable can also work on the Bi-directional setting, and some can't. EPP you may also see in the mobo's BIOS and is "Enhanced Parallel Port" which is about the same as ECP speed wise, but is older. ECP sort of replaced it. Most mobo BIOS's will have 3 settings for the LPT port; bi-directional, ECP, and ECP+EPP. -Clint
God Bless Clint Hamilton, Owner http://OrpheusComputing.com ) http://ComputersCustomBuilt.com ----- Original Message ----- From: "Jeff Dougherty" What is the difference between bi-directional and ECP? I had an interface box that hooks to the printer port. My computer would not see this box until I changed the port to ECP. All instructions for using the interface state to set the LPT port for bi-directional. Thank you. Jeff ============= PCWorks Mailing List ================= Don't see your post? Check our posting guidelines & make sure you've followed proper posting procedures, http://pcworkers.com/rules.htm Contact list owner <[EMAIL PROTECTED]> Unsubscribing and other changes: http://pcworkers.com =====================================================
