335 lines
6.4 KiB
HTML
335 lines
6.4 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>The Basic Procedure</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.60"><LINK
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REL="HOME"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="What do you need to install a BocaBoard?"
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HREF="requiredmaterials.html"><LINK
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REL="NEXT"
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TITLE="Possible Problems"
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HREF="problems.html"></HEAD
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TEXT="#000000"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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>Prev</A
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HREF="problems.html"
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>Next</A
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="PROCEDURE"
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>4. The Basic Procedure</A
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></H1
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="RECOMPILINGKERNEL"
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>4.1. Recompiling the Kernel</A
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></H2
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><P
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>The first step is to change your kernel so that it knows you
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have a BocaBoard. Unfortunately, this is not a part of the configure script;
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you must go in and modify the source by hand. In the older versions of the
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kernel, this consists of putting the following line at the beginning of
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<TT
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CLASS="FILENAME"
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>linux/drivers/char/serial.c</TT
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>:</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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> #define CONFIG_BOCA 1</PRE
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></TD
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></TR
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></TABLE
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><P
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>As of some kernel version or another, this has changed. To make
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it work with newer kernels, search for the
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>"BOCA_FLAGS" #define</PRE
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></TD
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></TR
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></TABLE
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> in
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<TT
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CLASS="FILENAME"
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>serial.c</TT
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>, and change the value to</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>#define BOCA_FLAGS ASYNC_BOOT_AUTOCONF
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</PRE
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></TD
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></TR
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></TABLE
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><P
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>You can then recompile your kernel using the instructions
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included with the source tree. I recommend running the new kernel from a floppy
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until you're very sure it works; otherwise, the procedure for getting back your
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system is mind-numbing at best.</P
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><P
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>At least to me, digging into my kernel and re-compiling it was
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quite a stressful venture! Relax; as long as you copy it to a floppy, your new
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kernel is completely harmless. It won't bite! Honest! :-)</P
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="INSTALLINGCARD"
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>4.2. Installing the Card</A
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></H2
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><P
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>The default address on both the card and the Linux software for
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the configuration is 0x100; leave that alone. Set the IRQ on the card to Linux
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default of 12. If you want to change the IRQ, you will have to search for
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"BOCA_FLAGS" in the file. You will find lines like this:</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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> { BASE_BAUD, 0x100, 12, BOCA_FLAGS }, /* ttyS16
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*/
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{ BASE_BAUD, 0x108, 12, BOCA_FLAGS }, /* ttyS17
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*/</PRE
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></TD
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></TR
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></TABLE
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><P
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>You can change the IRQ from 12 by changing the 12 to any valid
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IRQ. I have not tried this, however.</P
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></DIV
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="TELLINGLINUX"
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>4.3. Telling Linux about Your Card</A
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></H2
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><P
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>Once you have compiled your new kernel, switch off the machine
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and install the card. Then, turn your machine on with the new kernel floppy in
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the drive. If the installation succeeded, you should see all sorts of strange
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stuff about 16550 UARTS being connected to ttyS16-ttyS32. The system will then
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come up normally.</P
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><P
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>The odds are pretty good that you don't actually have entries in
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<TT
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CLASS="FILENAME"
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>/dev </TT
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>for those lines. Remember that they start at 16 and go on to 32. If you
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look at the source code, you'll see why; support for other cards is included in
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the code for lower line numbers. Creating them is pretty simple, once you know
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the trick. </P
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><P
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>To create entries for dial-out lines (where you call out), type:
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>#mknod /dev/cuaxx c 4 N</PRE
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></TD
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></TR
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></TABLE
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></P
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><P
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>n = 64 + {line number}. The C indicates that this is a character
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mode device. For example, to create the first couple of lines on your board,
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type:
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>#mknod /dev/cua16 c 4 80
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#mknod /dev/cua17 c 4 81</PRE
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></TD
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></TR
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></TABLE
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></P
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><P
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>To create dial-in lines (where users call you), type:</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>#mknod /dev/ttySxx c 5 n</PRE
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></TD
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></TR
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></TABLE
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><P
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>where N is the same as described above. For example, to create
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the first couple of lines on your BocaBoard, type:</P
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><TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>#mknod /dev/ttyS16 c 5 80
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#mknod /dev/ttyS17 c 5 81</PRE
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></TD
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></TR
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></TABLE
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><P
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>It is recommended that you create both dial in and dial out
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lines for each port, so that you have maximum flexibility. It turns out to be
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very handy to call another line of your system by activating one of your lines
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as dial-out and calling your main number. I've done this already and it works
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great! It's most useful for checking how things look "on the other side of the
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fence"; I used it to find out how my software looked at 2400bps. (It's slower
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than the Linux console. A LOT slower, in fact).</P
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><P
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>Once you've finished with this, you can add entries to your
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<TT
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CLASS="FILENAME"
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>inittab</TT
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> file in the same way as you would for a standard ttySx entry, and the
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modems or terminals should come up!</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="requiredmaterials.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
|
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="problems.html"
|
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>Next</A
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></TD
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></TR
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><TR
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><TD
|
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>What do you need to install a BocaBoard?</TD
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><TD
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WIDTH="34%"
|
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ALIGN="center"
|
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VALIGN="top"
|
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> </TD
|
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><TD
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WIDTH="33%"
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ALIGN="right"
|
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VALIGN="top"
|
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>Possible Problems</TD
|
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></TR
|
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></TABLE
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></DIV
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></BODY
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> |