I wasn't taught directly (and don't know what I'm doing still), but I've had a lot of fun learning about retro hardware design as a software engineer. I've made a few of my own reverse engineered designs, trying to synthesize how the real designers would have built the chip at the time, and ported others for the Analogue Pocket and MiSTer project.

Here's an example of my implementation of the original Tamagotchi: https://news.ycombinator.com/item?id=45737872 (https://github.com/agg23/fpga-tamagotchi)