From 7b53aef435c8dd30fd1ff57b245aeb4a5153aece Mon Sep 17 00:00:00 2001
From: Kevin Ramharak <kevin@ramharak.nl>
Date: Sun, 13 Jan 2019 15:52:56 +0100
Subject: [PATCH] add opcode usage data

---
 Instruction-Set.md | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Instruction-Set.md b/Instruction-Set.md
index ea420d2..5ed96a1 100644
--- a/Instruction-Set.md
+++ b/Instruction-Set.md
@@ -1,6 +1,28 @@
 # Instruction set
 The [instruction table](#instruction-table-with-affected-flags) and [instructions](#instructions) are sorted alphabetically.
 
+## Opcodes in use
+Current opcodes in use
+```
+ 1,  2,  3,  4,  5,  6,  7,      9, 10,
+11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
+21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
+31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+41, 42, 43, 44, 45, 46, 47
+```
+Current opcodes reserved
+```
+48 => INT
+49 => IRET
+```
+Current opcodes unsused
+```
+8,
+48. 49, 50
+51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
+61, 62, 63
+```
+
 ### Instruction table with affected flags
 | Instruction mnemonic | Operands | Opcode | `C Z S O B` |
 | -------------------- |:-------- |:------:|:--------- |