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AGI-64 is a free AGI interpreter for the Commodore 64, enabling play of classic Sierra adventures like Space Quest 1. It is 75% complete, supports save/load, and is optimized for 1 MHz hardware.
The article explores the Siemens PC-X, a 1984 PC that ran SINIX (a Unix-based OS) and featured unique hardware specifications and design, providing historical context for early computing.
TinySol is a tiny Klondike Solitaire game for DOS, designed for vintage computers with monochrome screens. It is written in x86 Assembly, fits in 3KB, and supports various video modes.
A deep-dive blog post reverse-engineering a 1948 IBM 604 vacuum-tube flip-flop module, explaining its circuitry and demonstrating it in operation.
The author documents the successful installation of A/UX 1.1, Apple's vintage UNIX, on the Snow emulator, detailing the hardware requirements and setup process.
This article reverse-engineers the 69-bit adder at the core of Intel's 8087 floating-point coprocessor from 1980, explaining its architecture and carry-chain techniques.
The article discusses powering up a thyratron tube module from the 1948 IBM 604 Electronic Calculating Punch, detailing the historical context of early electronic computing and the innovation of pluggable modules.
A detailed reverse-engineering analysis of the ALU board from the Mitra 125 MS minicomputer used in Spacelab, exploring its circuit design and historical context.
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.