def INY(cpu, arg1, arg2):
indirectAddress = memory.read(arg1) + (memory.read((arg1 + 1) & 0xFF) << 8)
cpu.cycles += pageBoundaryCycles(indirectAddress, cpu.Y)
cpu.PC += 2
return (indirectAddress + cpu.Y) & 0xFFFF
def ABY(cpu, arg1, arg2):
addr = arg1 + (arg2 << 8)
cpu.PC += 3
cpu.cycles += pageBoundaryCycles(addr, cpu.Y)
return (addr + cpu.Y) & 0xFFFF
