| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | ------------------------------------------------------------------------------ |
| 2 | README file for the PCBIT-D Device Driver. |
| 3 | ------------------------------------------------------------------------------ |
| 4 | |
| 5 | The PCBIT is a Euro ISDN adapter manufactured in Portugal by Octal and |
| 6 | developed in cooperation with Portugal Telecom and Inesc. |
| 7 | The driver interfaces with the standard kernel isdn facilities |
| 8 | originally developed by Fritz Elfert in the isdn4linux project. |
| 9 | |
| 10 | The common versions of the pcbit board require a firmware that is |
| 11 | distributed (and copyrighted) by the manufacturer. To load this |
| 12 | firmware you need "pcbitctl" available on the standard isdn4k-utils |
| 13 | package or in the pcbit package available in: |
| 14 | |
| 15 | ftp://ftp.di.fc.ul.pt/pub/systems/Linux/isdn |
| 16 | |
| 17 | Known Limitations: |
| 18 | |
| 19 | - The board reset procedure is at the moment incorrect and will only |
| 20 | allow you to load the firmware after a hard reset. |
| 21 | |
| 22 | - Only HDLC in B-channels is supported at the moment. There is no |
| 23 | current support for X.25 in B or D channels nor LAPD in B |
| 24 | channels. The main reason is that these two other protocol modes have, |
| 25 | to my knowledge, very little use. If you want to see them implemented |
| 26 | *do* send me a mail. |
| 27 | |
| 28 | - The driver often triggers errors in the board that I and the |
| 29 | manufacturer believe to be caused by bugs in the firmware. The current |
| 30 | version includes several procedures for error recovery that should |
| 31 | allow normal operation. Plans for the future include cooperation with |
| 32 | the manufacturer in order to solve this problem. |
| 33 | |
| 34 | Information/hints/help can be obtained in the linux isdn |
| 35 | mailing list (isdn4linux@listserv.isdn4linux.de) or directly from me. |
| 36 | |
| 37 | regards, |
| 38 | Pedro. |
| 39 | |
| 40 | <roque@di.fc.ul.pt> |