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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 halted.")
print("===============")
for i in range(8):
reg_name = f"r{chr(ord('a') + i)}"
value = getattr(machine, reg_name).value
print(f"{reg_name.upper()}: 0x{value:>04x} ({value})")
print(f"PC: 0x{machine.pc.value:>04x} ({machine.pc.value})")
print(f"FR: carry={machine.fr.carry}\n "
f"overflow={machine.fr.overflow}\n "
f"zero={machine.fr.zero}\n "
f"sign={machine.fr.sign}")
for i in range(8):
print(f"RAM[{i}]: 0x{machine.ram.read(i):>04x} ({machine.ram.read(i)})")
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