1 files changed, 3 insertions, 0 deletions
diff --git a/README.md b/README.md
index b3ee5c2..00784eb 100644
--- a/README.md
+++ b/README.md
@@ -252,6 +252,9 @@ Following coprocessor 0 registers are recognized
 | $15,1  | EBase      | Exception vector base register |
 | $16,0  | Config     | Configuration registers |
 
+`mtc0` and `mfc0` are used to copy value from/to general puropose registers
+to/from comprocessor 0 register.
+
 Hardware/special registers implemented:
 
 | Number | Name       | Description |