fixed arithmetic exception, README updated and Settings stuff

README.md

@@ -86,10 +86,11 @@ the ANGLE dylib files into the `build` dir, so it can load them. Remember to run
 If there are any issues, feel free to open an issue & PR request.
 
 **Requirements:** 
+- Git (https://git-scm.com/)
 - MinGW-w64 (https://www.mingw-w64.org/)
 - CMake (https://cmake.org/download/)
 
-Follow these steps to install MinGW-w64 for Windows: https://code.visualstudio.com/docs/cpp/config-mingw#_installing-the-mingww64-toolchain
+**Follow these steps to install MinGW-w64 for Windows:** https://code.visualstudio.com/docs/cpp/config-mingw#_installing-the-mingww64-toolchain
 
 Change the default compiler to use in CMakeList.txt to the following:
 ```cmake
@@ -101,7 +102,8 @@ Once complete, continue in Powershell:
 git clone https://github.com/npxtune/chisel8.git
 cd chisel8
 git submodule update --init --recursive   # To fetch raylib & raygui
-mkdir build && cd ./build
+mkdir build
+cd build
 cmake -DCMAKE_BUILD_TYPE=Release ..
 make -j 6 # '6' -> How many cores you want to use
 ```

src/core/emu_core.c

@@ -259,9 +259,8 @@ int32_t decode_exec(emu *chip8, options_config *config) {
                 case (0x33):
                     N1 = chip8->reg[X];
                     chip8->ram[(chip8->I) % RAM_SIZE] = N1 / 100;
-                    chip8->ram[(chip8->I + 1) % RAM_SIZE] = N1 % (((chip8->ram[(chip8->I) % RAM_SIZE]) * 100)) / 10;
-                    chip8->ram[(chip8->I + 2) % RAM_SIZE] = N1 % (((chip8->ram[(chip8->I) % RAM_SIZE]) * 100 +
-                                                                   (chip8->ram[(chip8->I + 1) % RAM_SIZE]) * 10));
+                    chip8->ram[(chip8->I + 1) % RAM_SIZE] = (N1 % 100) / 10;
+                    chip8->ram[(chip8->I + 2) % RAM_SIZE] = N1 % 10;
                     break;
 
                 case (0x55):

src/gui/options_window.c

@@ -179,11 +179,25 @@ int32_t options_window(options_config *config, ui_scale *scale) {
 
     GuiColorPicker((Rectangle) {600, 175, 200, 200}, "TEXT", &config->pixel_color);
 
+    GuiCheckBox((Rectangle) {scale->button_x, GetScreenHeight() - (GetScreenHeight() / 3),
+                                 scale->button_width/8, scale->button_width/8}, "Show Debug info", &config->show_debug);
+
+    GuiCheckBox((Rectangle) {scale->button_x, GetScreenHeight() - (GetScreenHeight() / 2),
+                             scale->button_width/8, scale->button_width/8}, "Show FPS", &config->show_fps);
+
+
     if (GuiButton((Rectangle) {scale->button_x, GetScreenHeight() - (GetScreenHeight() / 6),
                                scale->button_width, scale->button_height},
                   GuiIconText(ICON_REREDO_FILL, "Return")) || IsKeyPressed(KEY_ESCAPE)) {
         SetExitKey(KEY_ESCAPE);
         return 0;
     }
+
+    if (config->show_debug == true) {
+        SetTraceLogLevel(LOG_INFO);
+    } else {
+        SetTraceLogLevel(LOG_ERROR);
+    }
+
     return 1;
 }