Update Symbiflow description

diff --git a/HDL_workflow.mdwn b/HDL_workflow.mdwn
index b87847b6ecc43449254083dfd8adba4823634e2e..21bc60f45fb53959d15d371e2d78613b393b5227 100644 (file)
--- a/HDL_workflow.mdwn
+++ b/HDL_workflow.mdwn
@@ -581,10 +581,12 @@ See [[HDL_workflow/cocotb]] page for installation instructions.
 
 ## Symbiflow
 
-needed for the Arty A7 100t Digilent FPGA board
+A fully open source toolchain for the development of FPGAs. Currently it targets Xilinx 7-series, Lattice iCE40 and ECP5, Quicklogic EOS S3.
+
+Needed for the Arty A7 100t Digilent FPGA board.
 
 See [[HDL_workflow/symbiflow]] for installation instructions
-and dependencies
+and dependencies.
 
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