mame

see sanyo

set breakpoint (at bootsector code start) and trace instructions and value of DI, then quit at HLT location

focus :maincpu
bpset 00380
g
trace trace.txt, :maincpu, noloop, {tracelog "  DI=%04Xh\n", di} 
bpset 0038A, , {quit}
g

log all excecuted instructions

put this is for example in autostart.txt: trace log.txt

capture movie

mame ....... -aviwrite screendump.avi

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")