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- The Linux Digiboard Driver
- --------------------------
-
- The Digiboard Driver for Linux supports the following boards:
-
- DigiBoard PC/Xe, PC/Xi, PC/Xeve
-
- Limitations:
- ------------
- Currently the Driver does not do autoprobing!
-
- The preconfigured I/O address is 0200h and the default memory address
- 0D0000h, ALT-PIN feature on and 16 ports available.
-
- Use them and you will not have to worry about configuring anything.
-
- You can configure the driver via lilo. Have a look at the end of this
- message. The default settings vanish as soon as you give a digi= commandline.
- You can give multiple digi= commandline parameters to define multiple
- boards.
-
- Supporting Tools:
- -----------------
- Some tools and more detailed information can be found at
- ftp://ftp.fuller.edu/Linux/digi
-
- WARNING: Most of the stuff available right now uses the WRONG Major Device
- numbers and the wrong call out devices. Be careful and check them first.
- Better not use any of the software in that directory if you run a recent
- 1.3.X Kernel or later!
-
- The "ditty" tool described in the Digiboard Manuals for other Unixes
- is also available.
-
- Currently the Linux MAKEDEV command does not support generating the Digiboard
- Devices. Use the following script to generate the devices:
-
- ------------------ mkdigidev begin
- #!/bin/sh
- #
- # Script to create Digiboard Devices
- # Christoph Lameter, April 16, 1996
- #
- # Usage:
- # mkdigidev [<number of devices>]
- #
-
- DIGI_MAJOR=23
- DIGICU_MAJOR=22
-
- BOARDS=$1
-
- if [ "$BOARDS" = "" ]; then
- BOARDS=1
- fi
-
- boardnum=0
- while [ $boardnum -lt $BOARDS ];
- do
- for c in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15;
- do
- name=`expr $boardnum \* 16 + $c`
- mknod /dev/cud$name c $DIGICU_MAJOR $name
- mknod /dev/ttyD$name c $DIGI_MAJOR $name
- done
- boardnum=`expr $boardnum + 1`
- done
- ------------------ mkdigidev end
- or apply the following patch to /dev/MAKEDEV and do a
- make digi
- ----- MAKEDEV Patch
- --- /dev/MAKEDEV Sun Aug 13 15:48:23 1995
- +++ MAKEDEV Tue Apr 16 17:53:27 1996
- @@ -120,7 +120,7 @@
- while [ $# -ne 0 ]
- do
- case "$1" in
- - mem|tty|ttyp|cua|cub) ;;
- + mem|tty|ttyp|cua|cub|cud) ;;
- hd) echo hda hdb hdc hdd ;;
- xd) echo xda xdb ;;
- fd) echo fd0 fd1 ;;
- @@ -140,6 +140,7 @@
- dcf) echo dcf ;;
- pcmcia) ;; # taken care of by its own driver
- ttyC) echo cyclades ;;
- + ttyD) echo digi ;;
- *) echo "$0: don't know what \"$1\" is" >&2 ;;
- esac
- shift
- @@ -208,6 +209,15 @@
- do
- makedev ttyC$i c $major1 `expr 32 + $i` $tty
- makedev cub$i c $major2 `expr 32 + $i` $dialout
- + done
- + ;;
- + digi)
- + major1=`Major ttyD` || continue
- + major2=`Major cud` || continue
- + for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
- + do
- + makedev ttyD$i c $major1 `expr 32 + $i` $tty
- + makedev cud$i c $major2 `expr 32 + $i` $dialout
- done
- ;;
- par[0-2])
- ----- End Makedev patch
-
- The /dev/cud?? devices behave like the /dev/cua?? devices
- and the ttyD devices are like the /dev/ttyS?? devices.
-
- Sources of Information
- ----------------------
-
- Webpage: http://private.fuller.edu/clameter/digi.html
-
- Mailing List: digiboard@list.fuller.edu
-
- (Write e-mail to that address to subscribe. Common ListServ commands work.
- Archive of messages available)
-
- Christoph Lameter (clameter@fuller.edu) 16. April 1996.
-
- -----------------------------------------------------------------------------
-
- Changes v1.5.5:
-
- The ability to use the kernel's command line to pass in the configuration for
- boards. Using LILO's APPEND command, a string of comma separated identifiers
- or integers can be used. The 6 values in order are:
-
- Enable/Disable this card,
- Type of card: PC/Xi(0), PC/Xe(1), PC/Xeve(2), PC/Xem(3)
- Enable/Disable alternate pin arrangement,
- Number of ports on this card,
- I/O Port where card is configured (in HEX if using string identifiers),
- Base of memory window (in HEX if using string identifiers),
-
- Samples:
- append="digi=E,PC/Xi,D,16,200,D0000"
- append="digi=1,0,0,16,512,(whatever D0000 is in base 10 :)
-
- Driver's minor device numbers are conserved. This means that instead of
- each board getting a block of 16 minors pre-assigned, it gets however
- many it should, with the next card following directly behind it. A
- system with 4 2-port PC/Xi boards will use minor numbers 0-7.
- This conserves some memory, and removes a few hard coded constants.
-
- NOTE!! NOTE!! NOTE!!
- The definition of PC/Xem as a valid board type is the BEGINNING of support
- for this device. The driver does not currently recognise the board, nor
- does it want to initialize it. At least not the EISA version.
-
- Mike McLagan <mike.mclagan@linux.org> 5, April 1996.
-
-