From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- Documentation/isdn/README.pcbit | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/isdn/README.pcbit (limited to 'Documentation/isdn/README.pcbit') diff --git a/Documentation/isdn/README.pcbit b/Documentation/isdn/README.pcbit new file mode 100644 index 000000000000..5125002282e5 --- /dev/null +++ b/Documentation/isdn/README.pcbit @@ -0,0 +1,40 @@ +------------------------------------------------------------------------------ + README file for the PCBIT-D Device Driver. +------------------------------------------------------------------------------ + +The PCBIT is a Euro ISDN adapter manufactured in Portugal by Octal and +developed in cooperation with Portugal Telecom and Inesc. +The driver interfaces with the standard kernel isdn facilities +originally developed by Fritz Elfert in the isdn4linux project. + +The common versions of the pcbit board require a firmware that is +distributed (and copyrighted) by the manufacturer. To load this +firmware you need "pcbitctl" available on the standard isdn4k-utils +package or in the pcbit package available in: + +ftp://ftp.di.fc.ul.pt/pub/systems/Linux/isdn + +Known Limitations: + +- The board reset procedure is at the moment incorrect and will only +allow you to load the firmware after a hard reset. + +- Only HDLC in B-channels is supported at the moment. There is no +current support for X.25 in B or D channels nor LAPD in B +channels. The main reason is that these two other protocol modes have, +to my knowledge, very little use. If you want to see them implemented +*do* send me a mail. + +- The driver often triggers errors in the board that I and the +manufacturer believe to be caused by bugs in the firmware. The current +version includes several procedures for error recovery that should +allow normal operation. Plans for the future include cooperation with +the manufacturer in order to solve this problem. + +Information/hints/help can be obtained in the linux isdn +mailing list (isdn4linux@listserv.isdn4linux.de) or directly from me. + +regards, + Pedro. + + -- cgit v1.2.3-59-g8ed1b