Fenix Guthrie writes that Chris Staecker restored a remarkably well-preserved Digi-Comp 1, the 1963 programmable educational toy computer introduced by E.S.R. The device uses mechanical logic gates programmed with soda-straw-like tubes on sliding rails and spring-loaded levers actuated by a clock switch to compute simple binary functions as a non-Turing-complete state machine reflective of early 1960s computing.
- E.S.R. originally intended to make actual computers before becoming a premier educational toy company in the 1960s
- Staecker'''s restoration used rubber bands and 3D-printed parts to return the toy to working condition
- The machine has 88 states, equivalent to 16,777,216 possible configurations
- Article references successor Digi-Comp II and other vintage ''"sort of''" computers like Geniac
- E.S.R. originally intended to make actual computers before becoming a premier educational toy company in the 1960s
- Staecker'''s restoration used rubber bands and 3D-printed parts to return the toy to working condition
- The machine has 88 states, equivalent to 16,777,216 possible configurations
- Article references successor Digi-Comp II and other vintage ''"sort of''" computers like Geniac
Zoe Skyforest writes about Kek, an emulator developed by vanheusden to bring the influential 16-bit PDP-11/70 minicomputer back to life on modern hardware. The software supports a variety of platforms including Linux, Windows, and microcontrollers like the ESP32 or Teensy 4.1.
- Emulates classic disk drives such as RK05, RL02, RP06, and RP07.
- Supports KW11-L line time clocks and DC-11 serial interfaces.
- Capable of running Unix versions from version 5 through version 7 in multi-user mode.
- Emulates classic disk drives such as RK05, RL02, RP06, and RP07.
- Supports KW11-L line time clocks and DC-11 serial interfaces.
- Capable of running Unix versions from version 5 through version 7 in multi-user mode.
The z386 project aims to implement the Intel 80386 processor core on an FPGA. Recent optimizations have significantly improved its performance, including the implementation of early start memory access and a reduction in branch jump cycles from 9.25 down to six through microcode refinements. These changes resulted in approximately a 39% increase in DOOM benchmark scores, though the project still falls short of original hardware speed and cannot yet boot Windows.
- Implementation of early start memory access for FPGA cores
- Optimization of store queues and branch jump timing
- Significant performance gains in gaming benchmarks
- Implementation of early start memory access for FPGA cores
- Optimization of store queues and branch jump timing
- Significant performance gains in gaming benchmarks
This article explores the question of whether we've reached a point of diminishing returns in computing power. It notes historical mispredictions about computer demand and highlights the rapid increase in processing capabilities, comparing modern smartphones to 1980s supercomputers. The author discusses how software engineers will always utilize available resources and questions if the continued pursuit of ever-increasing compute power is truly beneficial. It suggests that for many personal projects, existing hardware is more than sufficient, and that the "enough" threshold is highly dependent on individual needs and tasks.
This Hackaday article discusses the historical significance of the Atari 800 and 400 computers, released in 1979, and their impact on the early home computer market. It highlights how the Atari 800, with its music synthesizer, bit-mapped graphics, and sprites, compared favorably to competitors like the Apple II, Commodore PET, and TRS-80.
A Landel Mailbug email appliance was repurposed into an AI console using an ESP32 microcontroller, text-to-speech, and the ChatGPT API.
Microsoft has released version 1.1 of Microsoft BASIC for the 6502 under an MIT license. This version, from mid-1978, supports the Commodore PET, KIM-1, and early Apple models. It's a version that has circulated unofficially for some time, now with licensing clarified.
Niklas Roy has created a modern-day take on the two-wheeled robots used in schools in the 1980s with Logo programming. His robots are vector plotters that create artwork and can be built with an Arduino Nano.
A retrospective on the MOS Technology 6502 microprocessor, celebrating its 50th anniversary. The article discusses its history, impact on early home computers and consoles, and its continued (though niche) presence in modern electronics.
Han has created a 512-bit magnetic core memory module and documented the process, including wiring details and oscilloscope traces. The module has passed extensive testing, demonstrating the reliability of ferrite memory. The article details the principles of magnetic core memory and provides links to resources for building your own.
