add architecture

leonmavr · Aug 12, 2024 · c45635e · c45635e
1 parent 99e1993
commit c45635e
Showing 1 changed file with 46 additions and 16 deletions.
diff --git a/README.md b/README.md
@@ -1,19 +1,12 @@
 ```
-    ▒▒▒▒▒▒ ▒▒▒▒▒         ▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒      ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
-
-  ▒▒▒▒▒▒    ▒▒▒▒         ▒▒▒▒  ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒▒   ▒▒▒▒▒       ▒▒▒▒▒
-                   
-▒▒▒▒▒▒       ▒▒▒         ▒▒▒     ▒▒▒▒   ▒▒▒▒▒▒▒▒▒▒▒ ▒▒▒▒▒       ▒▒▒▒▒
-          
-▒▒▒▒▒▒       ▒▒▒ ▒▒▒▒▒▒▒ ▒▒▒     ▒▒▒▒   ▒▒▒▒▒▒▒▒▒   ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
-                                                       
-▒▒▒▒▒▒       ▒▒▒ ▒▒▒▒▒▒▒ ▒▒▒     ▒▒▒▒   ▒▒▒▒        ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
-
-▒▒▒▒▒        ▒▒▒         ▒▒▒     ▒▒▒▒   ▒▒▒▒        ▒▒▒▒▒       ▒▒▒▒▒
-
-  ▒▒▒▒▒▒    ▒▒▒▒         ▒▒▒▒  ▒▒▒▒▒▒▒▒ ▒▒▒▒        ▒▒▒▒▒       ▒▒▒▒▒
-
-    ▒▒▒▒▒▒ ▒▒▒▒▒         ▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒        ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
+    ▒▒▒▒▒▒ ▒▒▒▒▒       ▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒     ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
+  ▒▒▒▒▒▒    ▒▒▒▒       ▒▒▒▒  ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒▒   ▒▒▒▒       ▒▒▒▒
+▒▒▒▒▒▒       ▒▒▒       ▒▒▒     ▒▒▒▒   ▒▒   ▒▒▒▒▒▒ ▒▒▒▒       ▒▒▒▒
+▒▒▒▒▒▒       ▒▒▒▒▒▒▒▒▒▒▒▒▒     ▒▒▒▒   ▒▒  ▒▒▒▒▒   ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
+▒▒▒▒▒▒       ▒▒▒▒▒▒▒▒▒▒▒▒▒     ▒▒▒▒   ▒▒▒▒▒▒▒     ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
+▒▒▒▒▒▒       ▒▒▒       ▒▒▒     ▒▒▒▒   ▒▒▒▒        ▒▒▒▒       ▒▒▒▒
+  ▒▒▒▒▒▒    ▒▒▒▒       ▒▒▒▒  ▒▒▒▒▒▒▒▒ ▒▒▒▒        ▒▒▒▒       ▒▒▒▒
+    ▒▒▒▒▒▒ ▒▒▒▒▒       ▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒        ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒
 ```
 # 1. About
 
@@ -59,7 +52,44 @@ make clean
 - [x] CI.
 - [ ] Sound; probably never going to implement this.
 
-# 4. Architecture
+# 4. Architecture and implementation
+
+### 4.1 Architecture
+
+```
+  <--- Main memory --->
+                 Read                                   Registers
+              <- only ->            Stack        0    1          15 
+  +-----------+-------+        +-----------+     +--+ +--+       +--+
+  |           |       |        |  |  |  |  |     |  | |  | . . . |  |
+  | Instr/s   | Fonts |        +-----------+     +--+ +--+       +--+
+  |           |       |       0x18       ^            ^ 
+  +-----------+-------+           ^      |            |
+0xFFF     ^ 0x200   0x0           |     2 bytes     1 byte
+          |   ^                   |
+          |   |                   |
+Program ------+                   |                      Delay    Sound
+start     |                       |                      timer    time
+          +-----------------------|------+               +---+    +---+
+Program   |           Stack       |      |               |   |    |   |
+counter   |           pointer     |    Index register    +---+    +---+
+(PC)      |           (SP)        |    (I)               1 byte   1 byte
++----+    |           +----+      |    +----+
+|    |----+           |    |------+    |    |
++----+                +----+           +----+
+12 bits               1 byte           12 bits
+
+        Renderer
++----------------------+ ^
+|                      | |
+|                      | 32
+|                      | |
++----------------------+ v
+<-------- 64 ---------->
+```
+
+
+### 4.2 Implementation
 
 **TODO**