1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 218e635f4SJeff Kirsher# 318e635f4SJeff Kirsher# Parallel Line Internet Protocol (PLIP) network device configuration 418e635f4SJeff Kirsher# 518e635f4SJeff Kirsher 618e635f4SJeff Kirsherconfig PLIP 718e635f4SJeff Kirsher tristate "PLIP (parallel port) support" 818e635f4SJeff Kirsher depends on PARPORT 9a7f7f624SMasahiro Yamada help 1018e635f4SJeff Kirsher PLIP (Parallel Line Internet Protocol) is used to create a 1118e635f4SJeff Kirsher reasonably fast mini network consisting of two (or, rarely, more) 1218e635f4SJeff Kirsher local machines. A PLIP link from a Linux box is a popular means to 1318e635f4SJeff Kirsher install a Linux distribution on a machine which doesn't have a 1418e635f4SJeff Kirsher CD-ROM drive (a minimal system has to be transferred with floppies 1518e635f4SJeff Kirsher first). The kernels on both machines need to have this PLIP option 1618e635f4SJeff Kirsher enabled for this to work. 1718e635f4SJeff Kirsher 1818e635f4SJeff Kirsher The PLIP driver has two modes, mode 0 and mode 1. The parallel 1918e635f4SJeff Kirsher ports (the connectors at the computers with 25 holes) are connected 2018e635f4SJeff Kirsher with "null printer" or "Turbo Laplink" cables which can transmit 4 2118e635f4SJeff Kirsher bits at a time (mode 0) or with special PLIP cables, to be used on 2218e635f4SJeff Kirsher bidirectional parallel ports only, which can transmit 8 bits at a 2318e635f4SJeff Kirsher time (mode 1); you can find the wiring of these cables in 2432c01266SMauro Carvalho Chehab <file:Documentation/networking/plip.rst>. The cables can be up to 2518e635f4SJeff Kirsher 15m long. Mode 0 works also if one of the machines runs DOS/Windows 2618e635f4SJeff Kirsher and has some PLIP software installed, e.g. the Crynwr PLIP packet 2718e635f4SJeff Kirsher driver (<http://oak.oakland.edu/simtel.net/msdos/pktdrvr-pre.html>) 2818e635f4SJeff Kirsher and winsock or NCSA's telnet. 2918e635f4SJeff Kirsher 3018e635f4SJeff Kirsher If you want to use PLIP, say Y and read the PLIP mini-HOWTO as well 3118e635f4SJeff Kirsher as the NET-3-HOWTO, both available from 3218e635f4SJeff Kirsher <http://www.tldp.org/docs.html#howto>. Note that the PLIP 3318e635f4SJeff Kirsher protocol has been changed and this PLIP driver won't work together 3418e635f4SJeff Kirsher with the PLIP support in Linux versions 1.0.x. This option enlarges 3518e635f4SJeff Kirsher your kernel by about 8 KB. 3618e635f4SJeff Kirsher 3718e635f4SJeff Kirsher To compile this driver as a module, choose M here. The module 3818e635f4SJeff Kirsher will be called plip. If unsure, say Y or M, in case you buy 3918e635f4SJeff Kirsher a laptop later. 40