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21 Φεβ 2016 · NEDONAND is 8-bit homebrew computer entirely built out of many 74F00 chips (2-input NAND gates)
With a handful of 7400 series ICs and an appreciation of the fetch-decode-execute cycle, it's possible to build a simple digital computer in less than 30 days. I have, for quite a while, had some ideas swirling around in my head to build a 4-bit 7400 series based CPU.
28 Φεβ 2024 · The Odyssey CPU is an 8-bit microcoded design with 16-bit address bus, using mostly 74HC-series logic.
An 8-bit computer without a microprocessor - just some 7400 series logic and some EEPROMs. Custom architecture, with custom software to follow - maybe a multitasking OS? Details
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24 Φεβ 2016 · He’s set himself the task of creating an entire CPU solely from NAND gates, and he’s using 74F00 chips to give a hoped-for 1MIPS performance. His design has an 8-bit data bus but a 4-bit ALU ...
A month long project and originally conceived to showcase at the Retro Computer Festival 19, the Cambridge-1 CPU features a 4-bit word size, blinkenlights-a-plenty, and some (slightly naughty) Arduino based cheating to virtualise the control unit.
