Retro CPC Dongle – Part 22

The screen shot below says it all. Yay! Video output from the CPC2.0!

Colour test for HDMI output from CPC2.0 board

I promised myself that I wouldn’t post those shaky photos/videos that people seem to post of their game/emulator/screen. Unfortunately, at this time a photo of the screen is the best I can do. Longer term, I’ll get a HDMI capture card from eBay and capture the screens properly, but for now this will have to do as proof of success! Colour bars. Continue reading

Retro CPC Dongle – Part 21

Developing a complex embedded system like the CPC2.0 from scratch is a series of massive achievements in miniature, like a nano-scale thunderstorm. Huge steps forward are represented by a signal line going high, or a chip outputting a short sequence of bits, proving the framework of everything built to date. This project is just like that, so it’s tough to explain to people that those few numbers on the screen represent thousands of hours of coding in C, RTL and hardware design to get a coded sequence out of the HDMI chip. There can be a lot of effort behind a blinky LED.

So, to make it a more interesting post, I thought I’d start with this:

Continue reading

Retro CPC Dongle – Part 20.1

I’ve posted the files of my work to date.  They’re rough and will need some work if you want to compile them, but it’s working!

Code is posted on GitHub here.

The support software provides a stdio connection to the Atmel supervisor, allowing me to start working on the connection to the video chip and seeing the results in real time. Stay tuned!

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