update netpfga

netpfga-doc-and-log/README.md

@@ -8,9 +8,8 @@
 There are a variety of hard coded scripts flying around in the
 Internet, so try to stick to the proposed paths below.
 
-Various things are likely to fail on your path, so take a good bag of
-good nerves.
-
+Various things are likely to fail on your path,
+so take a good bag of good nerves.
 
 ### Get Vivado, SDNET
 
@@ -20,6 +19,29 @@ good nerves.
 * Browse/dig through the website until you find a REALLY HUGE vivado
   download
 
+WARNING: do this is a first step. You are downloading more than 20 GB
+of installation files and the connection seems to be throttled to
+around 1 MiB/s - so it will take around 3h to just get the install
+files.
+
+### Hardware notes
+
+* The card DOES need external PCI-E power
+* If you did not connect the power, it will not start
+* The card has a switch (!) to power it on
+* If you don't power it on... you get the picture.
+* The card will NOT show up in lspci when it comes to you freshly
+
+### Hardware notes 2
+
+If you happen to have the card powered up ("the fan is spinning"),
+then connect it via tha microusb cable to a host. Two serial devices
+will appear, both running at 115200 8N1. Connect to the second one,
+then press the PROG button on the card. You should see some debug.
+
+Don't continue until you do see the debug messages above.
+
+
 ### Install SDNnet
 
 * Unpack the file, run xsetup, put stuff below /opt/Xilinx