Parallel Peripheral Interface for Personal Computers IEEE 1284.1-1997: Transport Independent Printer/System Interface- a protocol for returning printer configuration and status IEEE 1284.2: Standard for Test, Measurement and Conformance to IEEE 1284 (not approved) IEEE 1284.3-2000: Interface and Protocol Extensions to IEEE 1284-Compliant Peripherals and Host Adapters- a protocol to allow sharing of the parallel port by multiple peripherals (daisy chaining) IEEE 1284.4-2000: Data Delivery and Logical Channels for IEEE 1284 Interfaces- allows a device to carry on multiple, concurrent exchanges of data IEEE 1284 typical color codes Here are the typical colors found on 25-pin IEEE 1284 cable leads. See also IFSP – Comecon version of Centronics Parallel port ("LPT" on x86 DOS systems) FireWire (IEEE 1394) Universal Serial Bus List of device bandwidths References External links Warp Nine Engineering's introduction to the IEEE 1284-1994 standard Interfacing to the Enhanced Parallel Port Undocumented Printing Wiki – IEEE 1284 Standards IEEE 1284 – Updating the PC Parallel Port IEEE 1284 summary IEEE 1284 ports pinouts Signal Diagrams for IEEE 1284 Protocol Parallel port – LPT (IEEE 1284) Linux C code for 1284.3 Daisy Chaining using Command Packet Protocol (CPP) Interrupt list related to the EPP BIOS calls: INT 17H – EPP BIOS – INSTALLATION CHECK Use EPP BIOS entry point to call Vectored EPP Services Computer buses IEEE standards Legacy hardware