I *think*
we've got a stack of Electronics and Wireless World issues,
so I'll have to look for the article...
and keep a good look out for the home built computers.
I have most of the issues from the time when homebrewing computers was a
major topic...
Alas most of the articles are incomplete. They don't give PCB layouts (no
big problem) or ROM dumps (very big problem). In a lot of cases you had
to contact the author for a programmed EPROM, and that is not likely to
be possible some 20-odd years later.
The same, alas, applies to many other magazine projects, though.
-tony