diff --git a/README.md b/README.md
index b1ac4f6..c9fcb10 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,17 @@
-> Copyright (c) 2019 ETH Zurich, Integrated System Laboratory, Renzo Andri > This is the open sourced version of the IIS internal repo https://iis-git.ee.ethz.ch/andri/RNNASIP.git 
+> Copyright (c) 2019 ETH Zurich, Integrated System Laboratory, Renzo Andri 
+
+> This is the open sourced version of the IIS internal repo https://iis-git.ee.ethz.ch/andri/RNNASIP.git 
+
 
 # RNN ASIP
 This is the main repository for the RNN Extension for PULP and tzscale (Synopsys)
 
 The project has the following sub-repos and dependencies:
 
-- RNN Pulpissimo (https://github.com/pulp-platform/pulpissimo/tree/rnnext or internal https://iis-git.ee.ethz.ch/andri/rnn-pulpissimo.git): Pulpissimo extended by special instructions
-- RNN RISC-V core (https://github.com/pulp-platform/riscv/tree/rnn_extension or internal https://iis-git.ee.ethz.ch/andri/rnn-riscv.git): Includes the RISC-V core with the RNN Extensions.
-- RISC-V toolchain with RNN-Extensions (https://github.com/pulp-platform/pulp-riscv-gnu-toolchain/tree/renzo-isa)
-- The PULP SDK and ISS Simulator (https://github.com/pulp-platform/pulp-sdk.git)
+- RNN Pulpissimo (https://github.com/pulp-platform/pulpissimo/tree/rnnext (80d493eaef950285a0e4f5d1e1afd4e6c0074872) or internal https://iis-git.ee.ethz.ch/andri/rnn-pulpissimo.git): Pulpissimo extended by special instructions
+- RNN RISC-V core (https://github.com/pulp-platform/riscv/tree/rnn_extension (ad1680c2ec65ea65b8e342c16131298b290c9e34) or internal https://iis-git.ee.ethz.ch/andri/rnn-riscv.git): Includes the RISC-V core with the RNN Extensions.
+- RISC-V toolchain with RNN-Extensions (https://github.com/pulp-platform/pulp-riscv-gnu-toolchain/commit/5d39fedd658d81a3ea9765cf9bd03a445b292e4b)
+- The PULP SDK and ISS Simulator (https://github.com/pulp-platform/pulp-sdk/releases/tag/2019.10.01)
 
 # Getting Started
 
diff --git a/docs/Report1/report.pdf b/docs/Report1/report.pdf
new file mode 100644
index 0000000..d28e87d
Binary files /dev/null and b/docs/Report1/report.pdf differ
diff --git a/sourcecode/funcApprox/tanh_eval.m b/sourcecode/funcApprox/tanh_eval.m
index 42809fd..42542d8 100644
--- a/sourcecode/funcApprox/tanh_eval.m
+++ b/sourcecode/funcApprox/tanh_eval.m
@@ -21,7 +21,7 @@
 lib=evalClass(f, fxPtFormat);
 results = []
 results_maxerr = []
-numElements_list = [2 4 8 16 32 64 128]'; %(2:4:128)';%[2 4 8 16 32 64 128]'
+numElements_list = (2:4:128)'; %[2 4 8 16 32 64 128]'; %(2:4:128)';%[2 4 8 16 32 64 128]'
 rangepm_list = [1:0.5:9]'
 for i=1:size(numElements_list,1)
     for j=1:size(rangepm_list,1)
diff --git a/vp/build_risv_toolchain.sh b/vp/build_risv_toolchain.sh
new file mode 100644
index 0000000..e3c74d1
--- /dev/null
+++ b/vp/build_risv_toolchain.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# Copyright (c) 2019 ETH Zurich, Integrated System Laboratory, Renzo Andri
+
+# Dependencies
+# centos: sudo yum install autoconf automake libmpc-devel mpfr-devel gmp-devel gawk  bison flex texinfo patchutils gcc gcc-c++ zlib-devel
+# ubuntu16: sudo apt-get install autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev
+
+export postfix="CentOS"
+
+git clone --recursive https://github.com/pulp-platform/pulp-riscv-gnu-toolchain pulp-riscv-gnu-toolchain_$postfix
+
+cd pulp-riscv-gnu-toolchain_$postfix
+git checkout isa-renzo
+
+echo "Make PULP"
+./configure --prefix=$(pwd)/opt-riscv/ --with-arch=rv32imc --with-cmodel=medlow --enable-multilib
+make 
+cd ../
+
+
+
+