Memotech MTX ROMs — why they are not here

This folder holds no ROM images. The page (/tools/memotech-mtx/) runs the visitor's own
Memotech ROM files, stored only in their browser, or the open GW MTX monitor written for this
site (MIT licence; source in /tools/mtx-data.js).

What I found (October 2026):

* The MTX ROMs (the 8 KB OS, MTX BASIC and the ASSEM assembler; MAME's names mtx1a.9h,
  mtx1b.8h, mtx1c.10h, CRC-32 9ca858cc, 87b4e59c, 9d7538c3 for the UK set) are Memotech's
  copyright. Memotech Ltd went into receivership in 1985; Geoff Boyd bought its assets and
  relaunched it as Memotech Computers Ltd in 1986.
* I found no statement from Memotech, Memotech Computers Ltd or Geoff Boyd giving permission to
  redistribute the ROMs, and no open-source replacement for them.
* MEMU (Andy Key's emulator, public domain; Bill Brendling's fork is under the Unlicense)
  includes the ROMs. Its download page says it "obviously does include copies of the MTX ROMs
  and some games, but this is all material already available from several places on the net,
  such as emulator and retro-gaming sites, and they were originally marketed by long defunct
  companies. Caveat Emptor." Its credits say the ROM images came from MtXemu (Bemmu Sepponen).
  The licence on MEMU's own code doesn't cover the ROMs.
  http://www.nyangau.org/memu/download.htm  http://www.nyangau.org/memu/credits.htm
  https://github.com/Memotech-Bill/MEMU/blob/master/LICENSE.txt
* primrosebank.net: "Most software emulators require a copy of the original machine's ROMs
  which are not in the public domain ... strictly speaking, you should already own a copy of
  the ROMs ... although some emulators distribute them inside the package and the original
  copyright holder is long since gone."
  http://primrosebank.net/computers/mtx/mtxemulation.htm
* MAME lists the ROMs by checksum but does not distribute them.

So the ROMs are widely shared by the community without a licence, which is not the same as
permission from a rights holder. This site follows the rule it uses for every emulator: ship a
ROM only when its rights holder allows free distribution (as Amstrad does for the Spectrum
ROMs), otherwise let visitors load their own.

The open monitor's font is the X11 misc-fixed 5x8 font (public domain).