function love.load()

  -- Set window title, resolution, and filter
  love.window.setTitle("Clover")
  love.window.setMode(1280, 720)
  love.graphics.setDefaultFilter("linear", "linear")

  -- Set up debug cart
  cart =
  {
    [0x4019] = 0xA9,
    [0x401A] = 0xFF
  }

  -- Set up ram
  ram = {}
  for i = 0, 2047 do
    ram[i] = tonumber(0x00)
  end

  -- Set up cpu
  cpu =
  {
    reg =
    {
      a = 0x00,
      x = 0x00,
      y = 0x00,
      p = {c = 0, z = 0, i = 1, d = 0, v = 0, n = 0},
      s = 0x0000,
      pc = 0x4019,
    },
    cyl = 0,
  }

  -- Set up opcode functions
  fnc = {}
  function fnc.LDA()
    cpu.reg.a = rd_mem(cpu.reg.pc + 1)
  end

  -- Set up opcode mappings
  op =
  {
    [0xA9] = {"LDA", fnc.LDA},
  }

end

function love.update(dt)

  -- Run cpu cycles
  while cpu.cyl ~= 29781 do
    crn_op = rd_mem(cpu.reg.pc)
      op[crn_op][2]()
    cpu.cyl = cpu.cyl + 1
  end
  cpu.cyl = 0

end

function love.draw()

  -- Draw debug information
  love.graphics.print(cpu.reg.a)

end

-- Set up function to read memory
function rd_mem(adr)
  if tonumber(adr) <= tonumber("0x1FFF") then
    return ram[adr]
  elseif tonumber(adr) > tonumber("0x4018") then
    return cart[adr]
  end
end