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A guide on using a Raspberry Pi to emulate a dial-up ISP, connecting vintage Macs via Wi-Fi with simulated dial-up speeds.
Jeff Geerling documents the restoration of an Apple Xserve G5 from 2004, including recapping its power supply and installing Mac OS X Server 10.3.
A detailed reverse-engineering analysis of how the Intel 8087 floating-point coprocessor decodes instructions, explaining the interplay between the main CPU and coprocessor, the use of microcode ROM, and the bus interface unit.
A detailed account of repairing a Commodore PET computer from 1977, involving diagnosing multiple bad chips and using adapter boards to replace obsolete ROMs.