@@ -1,2 +1,8 @@
-# PICL
-PICL → PIC16 compiler
+PICL → PIC16 compiler ([BlackBox](http://www.oberon.ch/blackbox.html) subsystem), based on N. Wirth [PICL](http://people.inf.ethz.ch/wirth/PICL/index.html) compiler
+
+Only PIC16F177{3,6,8} is currently supported and tested
+Subsystems:
+* [Pic](Pic): compiler
+Alexander V. Shiryaev, 2019
Alexander Shiryaev