In this blog post, I design a single step module for the RC2014. [TODO: Insert Video Here] If you haven’t read my introduction to retrocomputing yet, then please start there, as it describes the Z80 platform that I’m using. The single step module is an alternative to the bus supervisor that I designed in the …
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Z80 Retrocomputing 4 – Bus Supervisor
This is the fourth in my series of Z80 retrocomputing blog posts. For background, I suggest starting with the first post. So what exactly is the purpose of the bus supervisor board? I wanted to do some assembly language work on the RC2014 Z80 Retrocomputer, and I examined several options: I could program an EPROM …
Read MoreZ80 Retrocomputing 3 – Bus Monitor Board
I wanted more lights on the retrocomputer, so I decided to add a bus monitoring board. For a brief introduction to my retrocomputing posts, please start at the first one. So what exactly does the bus monitor board do? It monitors the Z80 address and data buses and displays the current values on those buses …
Read MoreZ80 Retrocomputing 2 – Real Time Clock for the RC2014
I developed my first add-on board for the RC2014. This board is a real-time clock and an 8-bit output port. I’ll use it to build a Nixie Tube Clock.
Read MoreIntro to Z80 Retrocomputing
This is the first in my series of Z80 retrocomputing blog posts. It serves as an introduction. I started by building the RC2014, a popular retrocomputer platform that I found on Tindie.
Read MoreBuilding the Dutchtronix Scope Clock
I was browsing the forums one day at EEVBLOG (where they like to talk about oscilloscopes and DMMs all day long, every day) and I saw mention of the Dutchtronix scope clock. Deep down I knew it and scope clocks like it existed, but I’d never taken the time to order one, until now. So …
Read MoreProduct Reviews: Mooshimeter, Raspberry Pi Black Slices Case, Powerhorse Surface Cleaner
Here are a trio of product reviews. The first is the Mooshimeter: Mooshimeter is a DMM accessory for use with your iPhone, iPad, or Android device. It communicates over bluetooth to the device. It supports multiple channels so you can measure both current and voltage simultaneously (very handy!). I needed a secondary DMM for the …
Read MoreMagic Eye Tube Audio Spectrum Analyzer
In this post, I put together a magic eye tube spectrum analyzer using my two-tube boards, op-amp boards, and a spectrum analyzer board that uses the BA3830S chip.
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