diff --git a/README.md b/README.md
index d017722b8279b6d5fbe0593d5ae58dca08344560..51f5dc2d84e4edcada885326421857ba424124a1 100644
--- a/README.md
+++ b/README.md
@@ -160,3 +160,4 @@ You can open a github ticket or join my Discord in the #ch32v003fun channel. htt
  * http://www.wch-ic.com/downloads/QingKeV2_Processor_Manual_PDF.html Processor Manual
  * http://www.wch-ic.com/downloads/CH32V003RM_PDF.html Technical Reference Manual
  * http://www.wch-ic.com/downloads/CH32V003DS0_PDF.html Datasheet
+ * https://github.com/CaiB/CH32V003-Architecture-Exploration/blob/main/InstructionTypes.md Details for the compressed ISA on this chip.