I confess it is in no way a classic machine, but I thought that this might be of interest to some people here. I had not heard of it before until a chance retweet from a ZX Spectrum-related account today: http://rc2014.co.uk/ ? RC2014 is a simple 8 bit Z80 based modular computer. It is inspired by the home built computers of the late 70s and computer revolution of the early 80s. It is not a clone of anything specific, but there are ideas of the ZX81, UK101, S100 and Apple I in here. Built mainly with parts donated to Nottingham Hackspace and components salvaged from random bits of equipment, it uses modern PCBs. It runs on a backplane that hosts the individual modules. This has standard 0.1? header sockets meaning new modules are simple and cheap to design and can use Veroboard or even jumper wires to breadboard. For resilience, most of the modules have been designed on to dedicated PCBs. In it?s typical basic form it has; 32k RAM, 8k ROM (running Microsoft BASIC), 3.7628Mhz Z80 processor serial communication at 115200 baud. Other modules include 8k x 8 bank switchable EPROM, SD card bootloader, ZX Printer interface, Blinkenlights, LED dot matrix display driver, LCD display driver ? (Errors in the source material.) More info and purchasing sources: https://www.tindie.com/products/Semachthemonkey/rc2014-homebrew-z80-compute… And a (for my money, insane, but) interesting peripheral: https://hackaday.io/project/9567-5-graphics-card-for-homebrew-z80 -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) ? +420 702 829 053 (?R)