diff --git a/src/site/wigiti/msx/memmap2.md b/src/site/wigiti/msx/memmap2.md
index e797cc9..149a8be 100644
--- a/src/site/wigiti/msx/memmap2.md
+++ b/src/site/wigiti/msx/memmap2.md
@@ -3,7 +3,7 @@
 Upgrade of MSX memory mapper system;
 
 * 144 bit page address
-* 14 bit page size
+* 14 bit page size (TODO: octal is 12 or 15 bit)
 * 18 bit width
 
 So the MSX page size goes from 16KB to about 36KB per page.