diff --git a/notes/2023-08-21--dev-notes.md b/notes/2023-08-21--dev-notes.md
index 2d1eb8a..f14f76a 100644
--- a/notes/2023-08-21--dev-notes.md
+++ b/notes/2023-08-21--dev-notes.md
@@ -30,7 +30,7 @@
     - asm: create a second array that stores every line with code (nor blank or comment only lines) + its line number
     - cpu: accept an optional debugging array, print line # and statement
 - readme:
-    - [ ] readme: rename (or split up?) mem map / peripherals section
+    - [x] readme: rename (or split up?) mem map / peripherals section
     - [ ] ? readme: put 2 keypad charts side by side (they would fit on my phone)
 - [/] see paper notes on mem map
 
diff --git a/readme.md b/readme.md
index f9951fd..d0c1dc2 100644
--- a/readme.md
+++ b/readme.md
@@ -67,7 +67,7 @@ With single stepping + verbose debugging output:
           C = 0
     - (bitwise, `0000 = NZOC`)
 
-## Memory map / Peripherals
+## Memory map
 
 - `00-0F` - display (4x4)
 - `10-19` - reserved for future use
@@ -78,6 +78,8 @@ With single stepping + verbose debugging output:
 - `30   ` - initial value for IP
 - `30-FF` - free
 
+## Peripherals
+
 ### Keypad
 
 The value of the latest keypress on a hex keypad is stored at `$20`.