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M > MEMOTECH  > MTX 500 /512


This mini forum is intended to provide a simple means of discussion about the Memotech  MTX 500 /512 computer. If you want to share your own experience or memories, or add relevant information about this system: post a message!

  Click Here to add a message in the forum


Sunday 14th August 2022
Savior2022 (germany)

I found mtx512 games$2528BKL$$memotech

Thursday 7th October 2021
Gary (Ireland)

Would a 500 psu work on the 512

Sunday 12th September 2021
A T (Scotland)

@Gary - I can''t find any ready-to-buy replacement PSUs, but it''s possible to build one yourself - see$9$t$76

Tuesday 13rd July 2021
Gary (Ireland)

Does anyone know where I can source a replacement PSU?

Friday 11th June 2021
Cedric (Belgium)

The computer is mentioned in the latest novel of Ernest Cline called Ready Player Two.

Wednesday 3rd March 2021
Neil MacPherson (UK)

The Memotech MTX computer is well known as the computer that featured in the film Weird Science

Saturday 29th November 2014
Tim Locke (New Brunswick, Canada)

Service manual:$20Service$20Manual.pdf

Saturday 6th April 2013
Roger Jowett (Ulster Londonderry)
sam coupe$zsjTpFR0oYQ

please help we have zx spectrum 48k and one 128k program running at 6mhz using external ram and snapper discs from velesoft site

Wednesday 20th February 2013
Roger (ulster fry)$zsjTpFR0oYQ$zsjTpFR0oYQ

not allowed to post this here!

Sunday 19th August 2012
Andy Key (England)
Andys Memotech site

A Service Manual exists.
One was sold a while back on eBay.
I too would like a copy, or a scan of it.

{{{ Andy

Friday 3rd August 2012
Gabriele (Italy)
Bits''n''dust - stories of retrocomputing and retrogaming

You can find a lot of manuals in good quality pdf format by browsing this site:
Whole site is in English, except for a couple of pages in German.

Saturday 21st July 2012
John Baxter (BRITAIN)

Does anyone know where I can download MTX documents and manuals, ideally in PDF ?? Things like User Manual, Service Manual(if it exists) and anything else that might be useful?

Sunday 3rd June 2012
Andy Key (UK)
Andys Memotech site
is a REimplementation of a MEMOTECH compatible computer, in VHDL, targeting a Cyclone II FPGA, on an Altera DE1 board.

{{{ Andy

Tuesday 10th January 2012
Lez Anderson (England )

One Chip Memotech MTX !! A project to put the Memotech MTX512 onto a single chip.

Still in the feasibility/Early stages, anyone wanting to help contact

Visit the one chip Memotech mtx512 site for details on the .......

Tuesday 20th September 2011
Andy Key (England)
Andys web pages

These links might be interesting :- - my Memotech page - Memotech Emulator - Memotech Floppy tool - Memotech site - MTX World - lots of good Memotech info

The MTX Operators Manual does include circuit schematic for the MTX.
Not seen the same for FDX or SDX.
Not aware of anyone putting it on a single chip.

No, you didn''t have to warm it up. :-)

{{{ Andy

Sunday 26th June 2011
Lez (England)

Does anyone have any technical information or documents about the MTX series ?? I''m looking for things like : circuit schematics, service manuals , info on the FDX, SDX unit ... basically anything relating to the MTX.. if so please email me ..

Wednesday 22nd June 2011


Has anyone put the MTX500/512 onto a single chip ... it''s been done for the Coco 3, Apple 2, and MSX I believe ??

Wednesday 22nd June 2011
Lez Anderson (England)

Doe anyone know if the MTX has been put into VHDL or Verilog ?? It''s been done for the MSX2 and it has similar hardware ....It would make a great project..!

Monday 14th August 2006
Jakub Offierski (Delft, Netherlands.)

According to IMDB (Internet Movie DataBase, this computer, the 512 model, was featured in the 1985 movie "Weird Science".

Wednesday 14th April 2004
Phil Harper-Smith (Wiltshire)

I had one of these and it was great - I used it for my college course on microprocessors - very useful for all the assembly language stuff we did. Built like a tank. One of the electronics mags finally published a circuit for the dual serial board which was based on the Z80 DART if I remember correctly.

Sunday 29th September 2002
Richard Hedderly (London, UK)

I used to work in a computer store circa 86-87 and the owners nephew used to work for Memotech and we saw one of the originals when he bought it in.

It was competing at that time with the Commodore 64 so was facing an brick wall.

One of the things I remember about it was that you had to warm it up before you could use it. 10 mins if my memory serves me correctly...

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