OK Last Shot...

A project log for 68040 upgrade for Powerbook 520c

Unsoldering and resoldering a 180-pin QFP! Thrills! Excitement! A full 68040 in a Powerbook 520c!

hackadayhackaday 03/23/2016 at 13:000 Comments

An NXP support rep confirmed the part used does has an FPU. I'll be trying *BSD and see if I can detect it from there. I'm going to try to find a spare 2.5 SCSI drive, though, since I don't want to blow away my OS 8.1 setup. I've got my CF adapter Microdrives, but they aren't bootable by the Powerbook.