def test_load_from_memory(opcode,dest,addr):
processor = gbc.Processor()
processor.memory[0x0110] = 0x5A
processor.registers[addr] = 0x0110
gbc.run_instruction(opcode, processor)
assert processor.program_counter == 1
assert processor.registers[dest] == 0x5A
def test_load_from_memory_half_addr(opcode,dest,low):
processor = gbc.Processor()
processor.memory[0xFF10] = 0x5A
processor.registers[low] = 0x10
gbc.run_instruction(opcode, processor)
assert processor.program_counter == 1
assert processor.registers[dest] == 0x5A
def test_copy_sp():
program = "\x08\x10\x01"
processor = gbc.Processor()
processor.registers["SP"] = 0x5AA5
gbc.run_instruction(program,processor)
assert processor.program_counter == 3
assert processor.memory[0x0110] == 0x5AA5
def test_register_copies(opcode,src,dest):
processor = gbc.Processor()
processor.registers[src] = 100
gbc.run_instruction(opcode, processor)
assert processor.program_counter == 1
assert processor.registers[src] == 100
assert processor.registers[dest] == 100
def test_copy_from_mem_immediate_address():
program = "\xF0\x11"
processor = gbc.Processor()
processor.memory[0xFF11] = 0xA5
gbc.run_instruction(program,processor)
assert processor.program_counter == 2
assert processor.registers["A"] == 0xA5
def test_copy_sp_and_add_imm():
program = "\xF8\x02"
processor = gbc.Processor()
processor.registers["SP"] = 0x03
gbc.run_instruction(program,processor)
assert processor.program_counter == 2
assert processor.registers["HL"] == 0x05
def test_copy_from_immediate_address():
program = "\xFA\x10\x01"
processor = gbc.Processor()
processor.memory[0x0110] = 0x5A
gbc.run_instruction(program, processor)
assert processor.program_counter == 3
assert processor.registers["A"] == 0x5A
def test_copy_immediate_to_memory():
program = "\x36\x5A"
processor = gbc.Processor()
processor.registers["HL"] = 0x0110
gbc.run_instruction(program, processor)
assert processor.program_counter == 2
assert processor.memory[0x0110] == 0x5A
def test_load_to_memory_half_addr(opcode,src,addr):
processor = gbc.Processor()
processor.registers[src] = 0x5A
processor.registers[addr] = 0x01
gbc.run_instruction(opcode, processor)
assert processor.program_counter == 1
assert processor.memory[0xFF01] == 0x5A
def test_pop_stack(opcode,reg):
program = opcode
processor = gbc.Processor()
processor.registers["SP"] = 3
processor.memory[3] = 0xA55A
gbc.run_instruction(program,processor)
assert processor.registers["SP"] == 5
assert processor.registers[reg] == 0xA55A
def test_copy_to_mem_and_increment_addr():
program = "\x22"
processor = gbc.Processor()
processor.registers["HL"] = 0x0110
processor.registers["A"] = 0x5A
gbc.run_instruction(program, processor)
assert processor.program_counter == 1
assert processor.registers["HL"] == 0x0111
assert processor.memory[0x0110] == 0x5A
def test_add_both_carry(opcode,reg):
program = opcode
processor = gbc.Processor()
processor.registers["A"] = 0x88
processor.registers[reg] = 0x88
gbc.run_instruction(program,processor)
assert processor.registers["A"] == 0x10
assert processor.flags["zero"] == False
assert processor.flags["subtract"] == False
assert processor.flags["half_carry"] == True
assert processor.flags["carry"] == True
def test_load_to_memory(opcode,src,addr):
processor = gbc.Processor()
processor.registers[src] = 0x5A
processor.registers[addr] = 0x0110
gbc.run_instruction(opcode, processor)
assert processor.program_counter == 1
if src == "H":
assert processor.memory[0x0110] == 0x10
elif src == "L":
assert processor.memory[0x0110] == 0x01
else:
assert processor.memory[0x0110] == 0x5A
def test_basic_add(opcode,reg):
program = opcode
processor = gbc.Processor()
processor.registers["A"] = 5
processor.registers[reg] = 4
gbc.run_instruction(program,processor)
if reg == "A":
assert processor.registers["A"] == 8
else:
assert processor.registers["A"] == 9
assert processor.flags["zero"] == False
assert processor.flags["subtract"] == False
assert processor.flags["half_carry"] == False
assert processor.flags["carry"] == False
def test_16bit_loads(opcode, reg):
program = "{}\x10\x01".format(opcode)
processor = gbc.Processor()
gbc.run_instruction(program, processor)
assert processor.program_counter == 3
assert processor.registers[reg] == 0x0110
