The ZX Spectrum Reverse Engineering and Clone Desgin Blog

ZX Design Info

A site dedicated to the reverse engineering of the ZX Spectrum and related projects.

ULA Book Registration Nov 14, 2009

If you would like to buy a copy of The Sinclair ZX Spectrum ULA, than please register your interest here. This will help me guage the number of people likely to buy the book, and keep me motivated!

I might periodically make notifications of progress via email, however most announcements will be made via the RSS feed and updates to this blog.

Click to Register

Spectrum ULA Book Oct 21, 2009

Today I hit the 30,000 word, 174 page mark. Currently the CPU clock and contention handling is being documented.

Further details about the Spectrum ULA Book may be found in the book section of this site.

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Diary of a New Game Oct 11, 2009

As a break from the book writing, I've been playing with some old code of mine from the '80s to see if I can build that elusive 3D isometric engine I had long wanted to create.

There were some good ideas there, and after a great deal of rework I can now announce the Liquid sprite engine and the beginnings of a new game...

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Harlequin Update Oct 05, 2009

I've received the Spartan-3A development board that I will be using for part of the on-going Harlequin development

The next stage will be to get the development kit installed for Linux and perform a few FPGA build tests from the previous CPLD designs I have completed.