Update README.md with full list

Author: BitRapture

README.md

@@ -13,20 +13,37 @@ Ee.E.e!eeeeee!.Ee.E.e!
 ```
 Disgustingly beautiful right?
 
+## migraine interpreter internals
+- 2 Immediate integer registers
+  - Where you'll be storing immediate values from functions
+  - The current usable register can be swapped with ``E``
+- Function index
+  - Accesses all functions
+  - Can be traversed with ``e`` and, when the index is odd, ``! or .`` will execute a goto function
+  - Resets to 0 if the index is larger than the function list
+- Program counter
+  - Keeps track of how far it is within the program
+  - Can be traversed through the branch function
+- """Unlimited""" integer stack
+  - Lets you store values from registers. Basically makes this whole language functional
+  - Can be accessed through sevaral stack functions
+
 ## How do I use this nightmare?
 migraine has only 4 operation characters, but it lets you do everything you need.
 | Character | Operation | Purpose |
 | --- | --- | --- |
 | ``e`` | Function index increment | Iterates through the function list |
-| ``.`` | Execute function | Executes the current function determined by the function index. Passes through the current register |
+| ``.`` | Execute function | Executes the current function determined by the function index. Passes the current register to the function as a parameter |
 | ``!`` | Execute function pass 0 | Very similar to ``.`` however this purposefuly passes 0 to the function instead of a register |
 | ``E`` | Swap register | Swap the current register |
 
-migraine uses a function list that you iterate through using these operators in order to create logic. You might notice, you can only increment!
-
-How do you decrement? This function list has a special function when the function index is odd, it has a goto function that allows you to traverse the function list however you fancy. ``e!`` is used quite a bit in programs as it sets the function index back to 0.
+The interpreter has *also* been setup to ignore all characters following a ``#`` character, this allows for comments in code files. Yipee! Documentation!
 
 ### The function list
+migraine uses a function list that you iterate through using the operators above in order to create logic. You might notice, you can only increment!
+
+How do you decrement? This function list has a special function when the function index is an odd number, it has a goto function that allows you to traverse the function list however you fancy. ``e!`` is used quite a bit in programs as it sets the function index back to 0.
+
 | Index | Function | Purpose |
 | --- | --- | --- |
 | 0 | number_0 | Sets the rightmost digit in the current register to 0 |
@@ -40,11 +57,43 @@ How do you decrement? This function list has a special function when the functio
 | 16 | number_8 | Sets the rightmost digit in the current register to 8 |
 | 18 | number_9 | Sets the rightmost digit in the current register to 9 |
 
-Woah woah, okay before we continue. This number function is pretty versatile. You can chain them using ``.`` to assemble numbers.
+Okay before we continue. This number function is pretty versatile. You can chain them using ``.`` to assemble numbers.
 
 ``ee ee ee!`` would set the current register to 3. If we were to then do ``ee.`` immediately afterwards, the current register would now be 34.
 
 Say we want to reset the current register back to 0, we can do ``e!`` to reset the function index to 0, and then ``!`` which would set the current register to 0
 
+This works because the number function internally looks something like this:
+```
+int number(int intRegister, int digit)
+{
+    return (intRegister * 10) + digit;
+}
+```
+It will always shift to the left to allow for a new digit, however when you pass 0 through (instead of a register) it resets.
+| Index | Function | Purpose |
+| --- | --- | --- |
+| 20 | add | Adds the non-current register to the current register |
+| 22 | subtract | Subtracts the current register from the non-current register |
+| 24 | multiply | Multiplies the non-current register to the current register |
+| 26 | divide | Divides the current register from the non-current register |
+| 28 | input | Gets input from stdin through the console, copies to the current register |
+| 30 | output_int | Output the current register as an integer to the console |
+| 32 | output_char | Output the current register as a character to the console |
+| 34 | compare_equals | Check if the current register is equal to the non-current register, the current register will be overriden with the result |
+| 36 | compare_greater | Check if the current register is greater than the non-current register, the current register will be overriden with the result |
+| 38 | branch | If the current register has a value greater than 0, it will set the program counter to the non-current register |
+| 40 | stack_push | Push the current register to the stack | 
+| 42 | stack_pop | Pop from the top of the stack and override the current register with the popped value |
+| 44 | stack_read | Read the stack by accessing at an index provided by the current register, the current register will be overriden with the read value |
+| 46 | stack_write | Write to the stack by accessing at an index provided by the current register, overrites the stack entry with a new value from the non-current register |
+
+Annnndd, that's all of them! That's the official function list however due to migraine being structured this way, it is completely possible to amend more functions to it. *The only issue is, the higher the index, the more ``e``'s are required to access them!!!*
 
+All functions listed in the table (notice goto is left out, it's a special little guy) follow this pattern:
+```cpp
+currentRegister = function(EITHER currentRegister OR 0);
+```
+The result will always be given back to the current register.
 
+I recommend checking out the ./Examples folder as I've included a few usable code demos with documentation!