increase programming speed by a factor of 4.

[usb-driver] / README

diff --git a/README b/README
index 597b1b2313596ef03ba478bf7011ca686f320d06..768c72405a2421d371db9a4cdaf339a1d8d79099 100644 (file)
--- a/README
+++ b/README
@@ -9,12 +9,16 @@ 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 8.2SP3
  * ISE Webpack 8.1SP3
+ * ChipScope 9.1.03i
  * ChipScope 9.1.02i
+ * ChipScope 8.2.04i
  * EDK 8.2.02i
+ * EDK 8.1.02i
 
 Build the library by calling `make'.
 
@@ -29,6 +33,9 @@ $ impact
 The source for this library can be found at:
 http://cvs.zerfleddert.de/cgi-bin/viewcvs.cgi/usb-driver/
 
+The main website is located at:
+http://www.rmdir.de/~michael/xilinx/
+
 
 Notes for the USB cable
 =======================
@@ -71,6 +78,11 @@ ppdev
 To use the device as an ordinary user, put the user in the group 'lp'
 
 
+If you have an almost compatible cable which works with other software but not
+with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile.
+This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable.
+
+
 Parallel Cable IV is currently only supported in 'compatibility mode', as no
 attempt to configure the ECP registers is done by this library.