CDFJ+   CDFJ+ is an updated version of CDFJ that has some additional features, such as optionally also using LDX # and LDY # as fast fetchers, plus support for larger programs: 32K ROM & 8K RAM 64K ROM & 16K RAM 128K ROM & 16K RAM 256K ROM & 32K RAM 512K ROM & 32K RAM   The 32K ROM & 8K RAM is compatible with 48-Pin LPC210X Family (Harmony, Harmony Encore, Melody).   Larger sizes require new hardware, bas