mame

see sanyo

mame debugger lua script console

• https://docs.mamedev.org/luascript/index.html#luascript-console

save 1MB of memory to file every frame

function draw(text)
  screen = manager.machine.screens[":screen"]
  cpu = manager.machine.devices[":maincpu"]
  mem = cpu.spaces["program"]
  local file = io.open("memory.bin", "wb")
  file:write(mem:read_range(0, 0xfffff, 8, 1)) --1MB
  file:close()

  -- screen:draw_box(20,20,125,80,0xff00ffff,0)
  -- screen:draw_text(40,40,string.format('Stack: $%X', cpu.state["SP"].value))
end

emu.register_frame_done(draw, "frame")