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‎.gitignore

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/build
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# Prerequisites
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*.d
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# Compiled Object files
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*.slo
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*.lo
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*.o
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*.obj
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# Precompiled Headers
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*.gch
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*.pch
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# Compiled Dynamic libraries
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*.so
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*.dylib
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*.dll
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# Fortran module files
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*.mod
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*.smod
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# Compiled Static libraries
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*.lai
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*.la
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*.a
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*.lib
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# Executables
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*.exe
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*.out
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*.app

‎.vscode/launch.json

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{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "(Windows) Launch",
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"type": "cppvsdbg",
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"request": "launch",
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"program": "${command:cmake.launchTargetPath}",
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"args": ["Tetris.gb"],
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"stopAtEntry": false,
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"cwd": "${workspaceFolder}\\build",
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"environment": [],
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"externalConsole": false
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}
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]
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}

‎.vscode/settings.json

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{
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"files.associations": {
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"iosfwd": "cpp",
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"algorithm": "cpp",
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"cctype": "cpp",
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"cmath": "cpp",
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"cstddef": "cpp",
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"cstdint": "cpp",
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"cstdio": "cpp",
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"cstdlib": "cpp",
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"cstring": "cpp",
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"ctime": "cpp",
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"cwchar": "cpp",
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"deque": "cpp",
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"exception": "cpp",
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"fstream": "cpp",
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"functional": "cpp",
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"initializer_list": "cpp",
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"iomanip": "cpp",
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"ios": "cpp",
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"iostream": "cpp",
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"istream": "cpp",
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"limits": "cpp",
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"list": "cpp",
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"map": "cpp",
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"memory": "cpp",
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"new": "cpp",
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"ostream": "cpp",
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"sstream": "cpp",
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"stack": "cpp",
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"stdexcept": "cpp",
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"streambuf": "cpp",
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"string": "cpp",
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"system_error": "cpp",
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"tuple": "cpp",
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"type_traits": "cpp",
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"typeinfo": "cpp",
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"unordered_map": "cpp",
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"utility": "cpp",
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"vector": "cpp",
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"xfacet": "cpp",
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"xhash": "cpp",
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"xiosbase": "cpp",
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"xlocale": "cpp",
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"xlocinfo": "cpp",
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"xlocmon": "cpp",
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"xlocnum": "cpp",
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"xloctime": "cpp",
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"xmemory": "cpp",
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"xstddef": "cpp",
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"xstring": "cpp",
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"xtr1common": "cpp",
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"xtree": "cpp",
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"xutility": "cpp",
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"array": "cpp",
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"iterator": "cpp",
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"cstdarg": "cpp",
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"locale": "cpp",
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"optional": "cpp",
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"xlocbuf": "cpp",
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"xlocmes": "cpp"
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}
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}

‎CMakeLists-GLFW.txt

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include(ExternalProject)
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set(GLFW_INCLUDE_DIR "${CMAKE_BINARY_DIR}/libs/glfw/include/")
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set(GLFW_LIBRARY_DIR "${CMAKE_BINARY_DIR}/libs/glfw/lib/")
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EXTERNALPROJECT_ADD(
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glfw
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GIT_REPOSITORY https://github.com/glfw/glfw.git
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GIT_TAG 3.3
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CMAKE_ARGS
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"-DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}/libs/glfw"
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"-DGLFW_BUILD_DOCS=FALSE"
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"-DGLFW_BUILD_TESTS=FALSE"
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"-DGLFW_BUILD_EXAMPLES=FALSE"
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)

‎CMakeLists.txt

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cmake_minimum_required(VERSION 3.0.0)
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project(emu-gameboy VERSION 0.1.0)
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set(CMAKE_CXX_STANDARD 17)
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include(${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists-GLFW.txt)
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file(GLOB_RECURSE EMU_SOURCES
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"${CMAKE_CURRENT_SOURCE_DIR}/libs/glad/src/glad.c"
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"${CMAKE_CURRENT_SOURCE_DIR}/src/*.h"
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"${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp"
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)
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include_directories(${GLFW_INCLUDE_DIR})
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include_directories(${CMAKE_CURRENT_SOURCE_DIR}/libs/glm)
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include_directories(${CMAKE_CURRENT_SOURCE_DIR}/libs/glad/include)
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link_directories(${GLFW_LIBRARY_DIR})
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add_executable(emu-gameboy ${EMU_SOURCES})
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add_dependencies(emu-gameboy glfw)
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target_link_libraries(emu-gameboy glfw3 ${OPENGL_LIBRARIES})
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/fonts/Minecraft.ttf Minecraft.ttf COPYONLY)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/shaders/rect.vshader shaders/rect.vshader COPYONLY)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/shaders/rect.fshader shaders/rect.fshader COPYONLY)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/shaders/text.vshader shaders/text.vshader COPYONLY)
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configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/shaders/text.fshader shaders/text.fshader COPYONLY)

‎LICENSE.md

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MIT License
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Copyright (c) 2019 Gerrit Gazic
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md

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# A Gameboy emulator written in C++ (WIP)
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I started this project to create an emulator which is capable to do emulation in **interpreter mode** and in **jit mode**.
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This is not a highly optimized emulator. The aim was to create a code base which is easy to follow for beginners.
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This is why each instruction group is implemented in an own class to provide a better implementation overview.
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Each instruction group contains a group of the *struct Instruction*. The *struct* contains everything necessary to process the given instruction. This way it should be easy to tell how the **dissasembly**, **interpreter mode** and **jit mode** for each single instruction works.
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´´´
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struct Instruction
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{
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short length;
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unsigned char opcode;
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std::function<std::string (int)> getMnemonic;
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//TODO Interpreter executeInterpreter(CPU);
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//TODO JIT with DynASM getAsm();
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};
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´´´
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Further more the emulator contains a simple dissasembler and aims to be cycle accurate.
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If you are just interested on how the implementation of the instructions were done, just look into the *src/instructions* subfolders.
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You will find the hardware implementation of the emulator in the *src/hardware* folder.
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## Ressources
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- http://gbdev.gg8.se/wiki/articles/Pan_Docs
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- http://www.pastraiser.com/cpu/gameboy/gameboy_opcodes.html
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- https://github.com/AntonioND/giibiiadvance/blob/master/docs/TCAGBD.pdf

‎docs/98-153B_Intel_8080_Microcomputer_Systems_Users_Manual_197509.pdf

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‎docs/TCAGBD.pdf

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‎fonts/Minecraft.ttf

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