Added a default emulator

emulator/main.py

@@ -0,0 +1,36 @@
+# Kyler Olsen
+# Feb 2024
+
+from typing import Sequence
+
+from .emulator import Computer, Memory
+from .devices import tty
+
+
+def simple_computer_with_tty(rom: list[int]) -> Computer:
+    return Computer(Memory(rom, [tty(0x7FE, 0x7FF)]))
+
+def main(argv: Sequence[str]):
+    import argparse
+
+    machines = {
+        'tty': simple_computer_with_tty
+    }
+
+    parser = argparse.ArgumentParser(
+        description='ytd 12-bit Computer Emulator',
+    )
+    parser.add_argument('rom_file', type=argparse.FileType('rb'))
+    parser.add_argument(
+        '-m', '--machine', choices=machines.keys(), default='tty')
+
+    args = parser.parse_args(argv)
+
+    computer = machines[args.machine](Memory.load_rom_file(args.rom_file))
+
+    while computer.active:
+        computer.step()
+
+if __name__ == '__main__':
+    from sys import argv
+    main(argv)