Add emu

1 files changed, 50 insertions, 0 deletions

diff --git a/atk16_emu/cli.py b/atk16_emu/cli.py
new file mode 100644
index 0000000..dd06f67
--- /dev/null
+++ b/atk16_emu/cli.py
@@ -0,0 +1,50 @@
+import sys
+from dataclasses import dataclass
+from emu import Machine
+
+@dataclass
+class Options:
+  rom_image_path: str | None
+  debugger_enabled: bool
+
+options = Options(
+  rom_image_path=None,
+  debugger_enabled=False,
+)
+
+def print_help():
+  print("Usage: emu_cli.py [-d] [-h|--help] <rom_path>")
+  print("")
+  print("Options:")
+  print("  <rom_path>: path to the rom image")
+  print("  -h: print help")
+  print("  -d: enable debugger")
+
+for arg in sys.argv[1:]:
+  if arg == "-d":
+    options.debugger_enabled = True
+  elif arg == "-h" or arg == "--help" or arg == "-?":
+    print_help()
+    sys.exit(0)
+  elif arg[0] == "-":
+    print(f"Unknown option: {arg}")
+    print_help()
+    sys.exit(1)
+  else:
+    options.rom_image_path = arg
+
+if options.rom_image_path is None:
+  print_help()
+  sys.exit(1)
+
+def load_rom_image_from_path(path: str) -> bytearray:
+  with open(path, "rb") as f:
+    return bytearray(f.read())
+
+rom_image = load_rom_image_from_path(options.rom_image_path)
+
+machine = Machine()
+machine.load_rom_image(rom_image)
+machine.reset()
+machine.run_until_halted()
+print(machine.get_system_state())