def test_nesttest(expected):
nes = Bus()
cart = Cartridge('nestest.nes')
nes.insert_cartridge(cart)
nes.cpu_write(0xFFFC, 0x00)
nes.reset()
assert nes.cpu_read(0xFFFC) == 0x00
assert nes.cpu_read(0xFFFd) == 0xC0
while True:
nes.clock()
if nes.cpu.complete():
break
mock_cpu = CPU(nes)
results = {}
cycle_errors = 0
test_line_count = len(expected)
print(f'\n### Nestest lines={test_line_count} ###')
for index, expected_line in enumerate(expected):
mock_cpu.reset()
pc = nes.cpu.state.pc
a = nes.cpu.state.a & 0xFF
x = nes.cpu.state.x
y = nes.cpu.state.y
p = nes.cpu.state.status
sp = nes.cpu.state.stkp
cycle_count = nes.cpu.state.clock_count
ppu_cycle = nes.ppu._cycle
ppu_scanline = nes.ppu._scanline
opcode = nes.cpu.cpu_read(pc)
mock_cpu.state.pc += 1
instruction = nes.cpu.OPCODES[opcode]
instruction.addr_mode(mock_cpu)
address = create_address_line(nes, mock_cpu, instruction)
op_name = f'{instruction.name} {address}'
op_bytes = f'{opcode:02X}'
for data in mock_cpu.fetches:
op_bytes += f' {data:02X}'
ns = '*' if instruction.is_non_standard else ' '
result = (f'{pc:04X} {op_bytes:<9}{ns}{op_name:<32}A:{a:02X} '
f'X:{x:02X} Y:{y:02X} P:{p:02X} SP:{sp:02X} '
f'PPU:{ppu_scanline:>3},{ppu_cycle:>3} CYC:{cycle_count}')
results[index] = result
if not result[:78] == expected_line[:78]:
print_context(results, index, expected_line, 25)
mock_cpu.state.print_flags()
if result[78:] != expected_line[78:]:
cycle_errors += 1
error_msg = f'Line {index + 1} did not match the expected result!'
assert result[:78] == expected_line[:78], error_msg
# assert result == expected_line # strict (includes cycles, scanline and clock)
try:
clock(nes)
except TypeError:
msg = f'Operator {instruction.operate.__name__} not implemented!'
print(red(msg))
print_context(results, index, expected_line)
raise UserWarning(msg)
error_1 = nes.cpu_read(0x0002)
error_2 = nes.cpu_read(0x0003)
msg = f'Error codes: 0x02 = 0x{error_1:02X} 0x03 = 0x{error_2:02X} (nestest.txt)'
assert error_1 == 0x00 and error_2 == 0x00, msg
print(f'Total number of cycle errors: {cycle_errors}')
from cartridge import Cartridge
if __name__ == '__main__':
nes = Bus()
# cart = Cartridge('tests/nestest.nes')
cart = Cartridge('roms/donkeykong.nes')
# cart = Cartridge('roms/smb.nes')
# cart = Cartridge('roms/ducktales.nes')
nes.insert_cartridge(cart)
nes.reset()
frame_count = 20
now = time.time()
while True:
nes.clock()
if nes.ppu.frame_count == frame_count:
break
diff = time.time() - now
print('------------')
print(f'Ran for {frame_count} frames.')
print(f'Running time: {diff:.{2}f} seconds')
print(f'Frames per second: {frame_count / diff:.{3}f} FPS')
print(f'Quality (60 FPS expected): {(frame_count / diff) / 60:.{2}f}')
# Best so far:
# 2020-10-06
# Ran for 20 frames.
# Running time: 9.36 seconds
# Frames per second: 2.138 FPS
