diff --git a/README.md b/README.md
index 5f3be48..c0a0d04 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,10 @@
 ## Summary
 
 1. [Aims and challenges](#aims-and-challenges)
-2. [Architecture choices](#architecture-choices)
-3. [Design](#design)
-    1. [The instruction set.](#the-instruction-set)
+2. [Design](#design)
+    1. [Core architecture](#core-architecture)
+    2. [Registers and memory map](#registers-and-memory-map)
+    3. [The instruction set](#the-instruction-set)
 
 ## Aims and challenges
 
@@ -36,11 +37,6 @@ People in the 70s got someone on the moon with their brain, and made him come ba
 AI is useful for medicine, protein research or other deep research subjects.
 I do not need a LLM to understand and make a computer.
 
-## Architecture choices
-
-The computer will be in 8 bits since the RAM and ROM are meant to be in 8 bits.
-The CPU will have ports for inputs / outputs, not a north and south bridge.
-
 ## Design
 
 The design is inspired of great people hard work :
@@ -49,12 +45,15 @@ The design is inspired of great people hard work :
 
 The core architecture will be inspired of the legendary [Intel's MCS-51](/Documents/Datasheets/8051.PDF) [microcontroller series](https://en.wikipedia.org/wiki/Intel_MCS-51).
 
+The computer will be in 8 bits. The target frequency of the processor is 10mHz
+The CPU will have ports for inputs / outputs, not a north and south bridge.
+
 ### Core architecture
 
 ![Computer diagram.](/Documents/Computer%20diagram.svg)
 Made with [Drawio](https://app.diagrams.net/).
 
-### Registers
+### Registers and memory map.
 
 | Name | Long Name               | Description                  |
 | :--: | :---------------------- | :--------------------------- |