THE WHOLE SITE,
Small sites should not need a search box. Here is everything we publish, grouped and described in one sentence each, so you can decide where to go before you go there.
Pages marked IN PREPARATION describe hardware that is not on sale yet. They are documentation, not a catalogue: read them by all means, but you cannot buy the boards today.
THE COMPUTER
ZX SPECTRUM NEO
/The machine itself: a full-hardware replica of the ZX Spectrum 48, 128, +2 and +3 built on the Sizif-512 platform, assembled and tested by hand.
CASES
/cases/Complete ZX Spectrum 48 cases for a board you already own, for anybody rebuilding a machine rather than buying one whole.
MODULES
/modules/The expansion cards that turn a Spectrum into a laboratory bench, driven from two BASIC keywords. They are being redesigned for safe hot-plugging and are not on sale yet — the page says what they will do and when to look again.
BUYING
SHOP
/shop/The whole catalogue in one place: complete machines, bare boards, cases, boxes, cables, power supplies and the printed manual.
DISTRIBUTORS
/distributors/Trade terms for shops, museums and resellers: orders from ten units, with boxes, manuals and cases personalised to your name.
SHIPPING
/shipping/Where we post to, how carriage is worked out, which carriers we use, and when an order leaves the bench.
RETURNS & REFUNDS
/returns/The fourteen-day right to withdraw explained in ordinary English, plus what to do when something arrives faulty.
LEARNING & BUILDING
WHAT IS MUMIO?
/what-is-mumio/Why a 48K Spectrum makes a better teaching machine than a board that needs an hour of installation before anything moves.
ZX SPECTRUM
/zx-spectrum/Background on the machine the Neo replicates, and why reproducing its behaviour in hardware matters more than emulating it.
CUTTING CUTOUTS FOR SIZIF-512
/cutting-cutouts-for-sizif-512/A practical guide to cutting the openings in a case so a Sizif-512 board and its connectors line up properly.
CREATE YOUR OWN MUMIO DEVICE
/made-your-own-mumio-device/How to build a card of your own for the MUMIO bus: addressing, the two BASIC keywords, and where to start.
I/O PORT (DEV. #00)
/2023/03/09/i-o-port-dev-00/Eight-bit input and output card with a pass-through connector and its own address — the foundation every other module sits on.
KEMPSTON INTERFACE (DEV. #01)
/2023/03/09/kempston-interface-dev-01/A joystick interface to the Kempston standard, with a small two-button joystick on the board for when the real one cannot be found.
REAL-TIME CLOCK (DEV. #02)
/2023/03/11/real-time-clock-dev-02/A clock the Spectrum can read and set from BASIC, so files stop being stamped with whatever the machine last guessed.
SERIAL INTERFACE (DEV. #03)
/2023/03/29/serial-interface-dev-03/UART, SPI, I²C and USB on one board — the four interfaces that let a 1982 machine talk to a modern sensor or a PC.
EXTERNAL ROM (DEV. #A1)
/2023/04/14/external-rom-dev-a1/Four switchable 16 KB ROMs in place of the one Sinclair fitted: diagnostics that boot the instant you switch on, and a way to run corrected firmware.
THE WORKSHOP
CONTACT
/contact/Who answers, what to put in an enquiry about an order, trade terms, and how the machines are built before they are boxed.
ACCESSIBILITY
/accessibility/What we have done to keep the site readable, what we already know falls short, and how to report anything that stops you.
THE LEGAL SHELF
TERMS AND CONDITIONS
/mumio-dev-store-terms-and-conditions/The full sales terms: ordering, payment, delivery, the right to withdraw, complaints and how disputes are settled out of court.
PRIVACY POLICY
/privacy-policy/What the site collects, who processes it, how long it is kept and what you can require us to do with it.
SITE MAP
/sitemap/This page. There is also a machine-readable version at /wp-sitemap.xml, which is the one search engines read.
LOOKING FOR SOMETHING THAT IS NOT HERE?
Then it does not exist yet, and we would like to know you were after it. Tell us what you expected to find.