August 2023

What you give up, when you opt out of the surveillance economy

Is it possible to live without Google and the like, and still use modern, portable computing devices? I still don't know.

Categories: general computing

Designing a dual 5V-to-RS232 serial level converter for the RC2014

Using an RC2014-based retrocomputer with genuine RS232 peripherals requires support for voltage level conversion. Although converter modules are inexpensive and widely available, I wanted to design something that would plug into an RC2014 backplane, just for neatness.

Categories: electronics, Z80, retrocomputing

Adventures with RC2014, Z80, and CP/M

This is a landing page for my various articles on building a period-appropriate CP/M system using the RC2014 bus.

Categories: Z80, retrocomputing