Jos Dreesen / Marian Capel wrote:
Whether it is the chicken or the egg, they also
have access to better
parts stores (for hobbiest quantities) and excellent magazines. The
Dutch
magazine Electuur is translated into English and published in the UK
every month as Elector. It has excellent construction articles,
readily available firmware, and even the PCB layout for most of the
projects.
Elector is indeed recommended.
AFAIK it also published the first DIY computer : in May '74 they
started a series on a 12 or 16 bit TTL-based computer. That is two
months before the Mark-8.
Those who like to see something special should check it out : it is a
two-address machine, no instructions, but memory-mapped "functional
units". It even had hardware based multiply and divide !
Umm where? A quick
google search found nothing.
Memory either , at astronomical expense, 2102's
or, slightly less
expensive, mos shift registers.
Jos Dreesen
2102 are now $2.00 each and TTL $0.25 ... This may
be a good time to build
it. :)
NOTE BGmicro has low power 450 ns 2102's for $.50