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Does anyone know of a reputable seller who has L88M mask m68040 CPUs for sale? I really want to finish my Quadra 610 - it has a NewerTech Quadra Overdrive, but it isn't stable with the CPU it has, so I'd like a CPU I know will work. The last one I bought from "u-barn" on eBay was counterfeit, and the one before that from a seller I don't even remember was an LC040 labeled as a full '040. Suggestions?
I started an archiving project using a Mac Quadra 610 here: https://68kmla.org/forums/index.php?/topic/25007-starting-archiving-project-using-quadra-610/ However, the 50 MHz NewerTech Quadra Overdrive proved to be not all that stable. The rest of the machine is 100% stable running at 25 MHz without the Quadra Overdrive, and I'd like to fix that. Does anyone know of a source or sources of the last mask .57 micron L88M Freescale / Motorola chips, aside from the $50 ones on eBay?