001. 初始文件

创建模拟器的初始源文件。

第 1 / 356 · tests/chapter_01_cpu/test_001_initial_files.py

需要创建的文件

emulator/cpu/cpu.py
emulator/cpu/addressing_modes.py
emulator/cpu/instructions.py
emulator/bus/cpu_bus.py
emulator/memory/ram.py

此步骤存在的原因

在实现具体行为之前，先确立最初的源代码边界。CPU 状态、地址计算、指令行为、总线路由和内存存储不应从一开始就混在一个单体文件中。

复现步骤

1. Create emulator/cpu, emulator/bus, and emulator/memory if they do not exist.
2. Create the five empty Python files listed above.
3. Add __init__.py files to package directories when required by the environment.
4. Run this test and confirm that every expected path exists.

此步骤尚不需要任何实现。空文件正是本步骤预期的结果。

常见误解

创建多个独立文件并不要求现在就设计好未来所有的类。此步骤只定义物理位置；后续的测试会逐步引入各自的职责。

范围之外

RAM 行为
CPU 寄存器
总线地址映射
指令执行

运行本课

uv run pytest tests/chapter_01_cpu/test_001_initial_files.py -v

1. Create emulator/cpu, emulator/bus, and emulator/memory if they do not exist. 2. Create the five empty Python files listed above. 3. Add __init__.py files to package directories when required by the environment. 4. Run this test and confirm that every expected path exists.

from pathlib import Path # CPU Folder files def test_cpu_file_exists(): assert Path("emulator/cpu/cpu.py").exists() def test_cpu_addressing_mode_file_exists(): assert Path("emulator/cpu/addressing_modes.py").exists() def test_cpu_instructions_file_exists(): assert Path("emulator/cpu/instructions.py").exists() # BUS Folder files def test_cpu_bus_file_exists(): assert Path("emulator/bus/cpu_bus.py").exists() # Memory Files def test_memory_ram_file_exists(): assert Path("emulator/memory/ram.py").exists()