targets: add versa_ecp5 with sdram (ecp5 soc hat) at 25MHz/no pll

[litex.git] / README

diff --git a/README b/README
index 31e38820ea78c9bd827f1e7ca9d3523cea971639..388858ca6eaa61709a8a4e7f436739237a0235af 100644 (file)
--- a/README
+++ b/README
@@ -12,6 +12,13 @@
 LiteX is a FPGA design/SoC builder that can be used to build cores, create
 SoCs and full FPGA designs.
 
+LiteX is based on Migen and provides specific building/debugging tools for
+a higher level of abstraction and compatibily with the LiteX core ecosystem.
+
+Think of Migen as a toolbox to create FPGA designs in Python and LiteX as a
+toolbox to create/develop/debug FPGA SoCs in Python.
+
+
 Typical LiteX design flow:
 --------------------------
 
@@ -129,9 +136,11 @@ FPGA lessons/tutorials can be found at: https://github.com/enjoy-digital/fpga_10
 
 5. ... and/or install Verilator and test LiteX on your computer:
   Download and install Verilator: http://www.veripool.org/
-  Install libevent-devel / json-c-devel packages
-  Go to boards/targets
-  ./sim.py
+  On Fedora:
+      sudo dnf install libevent-devel json-c-devel
+  On Ubuntu:
+      sudo apt install libevent-dev libjson-c-dev
+  run: litex_sim
 
 6. Run a terminal program on the board's serial port at 115200 8-N-1.
   You should get the BIOS prompt.