itch.io

Yes, try the following approach:

if query(IS_CGB) then
  print "CGB"
else if query(IS_SGB) then
  print "SGB"
else if query(IS_AGB) then
  print "AGB"
else
  print "DMG"
end if
if query(IS_GBB) then
  let flags = query(PLATFORM_FLAGS)
  let os = flags band 0b00001111
  select case os
    case 0b00000001
      print " OS: Windows"
    case 0b00000010
      print " OS: Linux"
    case 0b00000100
      print " OS: MacOS"
    case 0b00001000
      print " OS: HTML"
    else
      print " OS: Unknown"
  end select
  if flags band 0b10000000 then
    print "Env: Editor"
  else
    print "Env: Emulator"
  end if
end if

Also see https://github.com/paladin-t/ram-mon.gbb for more precise hardware detection.