diff --git a/readme.md b/readme.md
index 6b57378..873793f 100644
--- a/readme.md
+++ b/readme.md
@@ -37,6 +37,7 @@ Add a running counter of ms/px using the vertical blank interrupts as a timer. T
 Check for cycles in (zx,zy) output when in the 'lake'; if values repeat, they cannot escape. This is a big time saver in fractint.
 
 I may be able to do a faster multiply using tables of squares for 8-bit component multiplication.
+(done)
 
 ## Deps and build instructions