I have Two PS2, one fat 39001(Not working laser, no modchip) and one Slim 70010, the Slim one had a "APPLE EX" modchip, i change this for a "MODBO 4.0"(More functions), and put the "APPLE EX" in the Fat, but only the bios points(MNOPQRTUVW), the 3.3v, the GND and the RST, with this i can boot the modchip configuration pressing /\+O(Useless because this modchip don`t save anything), but not boot a ELF with R1.
My question is, I need connect more points to boot an ELF from "Mc0:/BOOT/"? i don`t need the CDVD support only boot ELF`s.

This is the diagram
appleex_gh005_010.jpg

Thanks for your attention.