This stated here where I had some confusion on the config vars for JLP use:    Okay... I almost get it...     According to @intvnut, he documented the following uses of the flags here on the forums:     ; To enable JLP accelerators and RAM only CFG_VAR "jlp" = 1 ; ; To enable JLP accelerators and flash save area CFG_VAR "jlp" = 3 CFG_VAR "jlp_flash" = 4 ; change 4 to however many 1.5K byte flash sectors you need   But it goes a bit more in-de