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Archive for February, 2018

Blinkenlights Plug-in —

Making an LED blinkenlights plug-in for monitoring 8-bit digital circuits. Why?: In my previous 8-bit CPU registers post I mentioned my concern about hard-wiring LEDs onto the CPU circuit boards. Whereas providing a series of 9-pin male headers offered more versatility: test points for a logic analyser, connection points for a console display, connection points […]

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8-Bit CPU – Registers —

Building CPU registers with TTL logic and some blinkenlights. Recap: Previously I posted about my quest to build a computer’s central processing unit (CPU) from transistor transistor logic chips (TTL). This initial venture into CPU design being very much guided by Ben Eater’s video tutorials for a computer built on breadboards. Please refer to Ben’s […]

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