do not export unnecessary symbols

[usb-driver] / README

diff --git a/README b/README
index a86a46ac536adc098c8c9cebff6e3693d9b0fb68..9c4346e04b4c96d96ddb4726f84ac5e279a2ae96 100644 (file)
--- a/README
+++ b/README
@@ -9,16 +9,15 @@ should work on every kernel version which is supported by libusb and supports
 ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
 the following software:
 
- * ISE Webpack 9.1SP3
- * ISE Webpack 9.1SP2
- * ISE Webpack 9.1SP1
+ * ISE Webpack 9.2SP1, SP2, SP3
+ * ISE Webpack 9.1SP1, SP2, SP3
  * ISE Webpack 8.2SP3
  * ISE Webpack 8.1SP3
- * ChipScope 9.1.03i
- * ChipScope 9.1.02i
+ * ChipScope 9.2.01i, 9.2.02i
+ * ChipScope 9.1.02i, 9.1.03i
  * ChipScope 8.2.04i
- * EDK 9.1.02i
- * EDK 9.1.01i
+ * EDK 9.2.01i
+ * EDK 9.1.01i, 9.1.02i
  * EDK 8.2.02i
  * EDK 8.1.02i
  * Synplicity Identify
@@ -67,11 +66,19 @@ these steps:
 2. Install the package containing /sbin/fxload from your linux distribution.
    It is usually called "fxload"
 
-3. copy the file /path/to/ISE/bin/lin/xusbdfwu.hex to /usr/share/xusbdfwu.hex
+3. copy the files /path/to/ISE/bin/lin/xusb*.hex to /usr/share/
 
 4. restart udev and re-plug the cable
 
 
+If you have multiple cables connected, you can specify the cable to use
+in the XILINX_USB_DEV environment-variable as "bus:device".
+These identifiers are available in the output of lsusb:
+Bus 001 Device 004: ID 03fd:0008 Xilinx, Inc.
+    ^^^        ^^^
+To use this cable, set the XILINX_USB_DEV variable to "001:004".
+
+
 Notes for the parallel cable
 ============================
 
@@ -133,3 +140,12 @@ To set-up the device:
 
 The support for FTDI 2232 based devices is experimental and they are currently
 significantly slower than the other supported cables.
+
+
+Locked cables
+=============
+
+If you get the message 'The cable is being used by another application.' from
+impact, try running the following command:
+
+echo -e 'cleancablelock\nexit' | impact -batch