From 3109cc0e75e66137e79a4b3ecc44a53fb0fab9ff Mon Sep 17 00:00:00 2001
From: Patrick_Pluto <patrick_pluto@noreply.codeberg.org>
Date: Thu, 22 Aug 2024 14:55:49 +0200
Subject: [PATCH] Adding previous work.

---
 .gitignore |  2 ++
 cpu.hpp    | 42 ++++++++++++++++++++++++++++++++++++++++++
 main.cpp   | 13 +++++++++++++
 3 files changed, 57 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 cpu.hpp
 create mode 100644 main.cpp

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..662f6d5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.vscode/
+bin/
diff --git a/cpu.hpp b/cpu.hpp
new file mode 100644
index 0000000..9508c24
--- /dev/null
+++ b/cpu.hpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <cstdint>
+
+namespace plutoisa
+{
+    using namespace std;
+
+    uint8_t *registers = (uint8_t *)malloc(8 * sizeof(uint8_t));
+    uint8_t *memory = (uint8_t *)malloc(128 * sizeof(uint8_t));
+    uint8_t *pointer = (uint8_t *)malloc(sizeof(uint8_t));
+
+    void cpuInstructions(uint8_t *rom)
+    {
+        switch (rom[*pointer])
+        {
+        case 0x00: // LOAD R0 M0
+            registers[rom[*pointer + 1]] = memory[rom[*pointer + 2]];
+            *pointer += 3;
+            break;
+        case 0x01: // STORE R0 M0
+            memory[rom[*pointer + 2]] = registers[rom[*pointer + 1]];
+            *pointer += 3;
+            break;
+        default:
+            cout << "Invalid Instruction, expect broken behavior" << endl;
+            exit(1);
+        }
+    }
+
+    void cpuEmulation(uint8_t *rom)
+    {
+        *pointer = 0;
+
+        memory[0] = 0x12;
+
+        while (true)
+        {
+            cout << static_cast<int>(registers[0]) << endl;
+            cpuInstructions(rom);
+        }
+    }
+}
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..f93369e
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,13 @@
+#include "cpu.hpp"
+
+using namespace plutoisa;
+
+int main()
+{
+    uint8_t *rom = (uint8_t *)malloc(16 * sizeof(uint8_t));
+    rom[0] = 0x00;
+    rom[1] = 0x00;
+    rom[2] = 0x00;
+    rom[3] = 0xFF;
+    cpuEmulation(rom);
+}
\ No newline at end of file