162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci# 362306a36Sopenharmony_ci# Parallel Line Internet Protocol (PLIP) network device configuration 462306a36Sopenharmony_ci# 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciconfig PLIP 762306a36Sopenharmony_ci tristate "PLIP (parallel port) support" 862306a36Sopenharmony_ci depends on PARPORT 962306a36Sopenharmony_ci help 1062306a36Sopenharmony_ci PLIP (Parallel Line Internet Protocol) is used to create a 1162306a36Sopenharmony_ci reasonably fast mini network consisting of two (or, rarely, more) 1262306a36Sopenharmony_ci local machines. A PLIP link from a Linux box is a popular means to 1362306a36Sopenharmony_ci install a Linux distribution on a machine which doesn't have a 1462306a36Sopenharmony_ci CD-ROM drive (a minimal system has to be transferred with floppies 1562306a36Sopenharmony_ci first). The kernels on both machines need to have this PLIP option 1662306a36Sopenharmony_ci enabled for this to work. 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ci The PLIP driver has two modes, mode 0 and mode 1. The parallel 1962306a36Sopenharmony_ci ports (the connectors at the computers with 25 holes) are connected 2062306a36Sopenharmony_ci with "null printer" or "Turbo Laplink" cables which can transmit 4 2162306a36Sopenharmony_ci bits at a time (mode 0) or with special PLIP cables, to be used on 2262306a36Sopenharmony_ci bidirectional parallel ports only, which can transmit 8 bits at a 2362306a36Sopenharmony_ci time (mode 1); you can find the wiring of these cables in 2462306a36Sopenharmony_ci <file:Documentation/networking/plip.rst>. The cables can be up to 2562306a36Sopenharmony_ci 15m long. Mode 0 works also if one of the machines runs DOS/Windows 2662306a36Sopenharmony_ci and has some PLIP software installed, e.g. the Crynwr PLIP packet 2762306a36Sopenharmony_ci driver (<http://oak.oakland.edu/simtel.net/msdos/pktdrvr-pre.html>) 2862306a36Sopenharmony_ci and winsock or NCSA's telnet. 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci If you want to use PLIP, say Y and read the PLIP mini-HOWTO as well 3162306a36Sopenharmony_ci as the NET-3-HOWTO, both available from 3262306a36Sopenharmony_ci <http://www.tldp.org/docs.html#howto>. Note that the PLIP 3362306a36Sopenharmony_ci protocol has been changed and this PLIP driver won't work together 3462306a36Sopenharmony_ci with the PLIP support in Linux versions 1.0.x. This option enlarges 3562306a36Sopenharmony_ci your kernel by about 8 KB. 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ci To compile this driver as a module, choose M here. The module 3862306a36Sopenharmony_ci will be called plip. If unsure, say Y or M, in case you buy 3962306a36Sopenharmony_ci a laptop later. 40