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The Memotech MTX Series

Memotech Software Development


This page hosts links to various development tools available on the web that may be useful for programmers who want to target the MTX, or other Z80, computers. Tools on this page are intended to be run in a Windows environment and will likely have a graphical user interface (GUI) and potentially provide an integrated development environment (IDE). These features make editing, assembly and linking of programs much more user friendly than the tools available at the time.

Of course, for the real "retro" experience, you can still use contemporary tools such as the Microsoft Macro-80 Assembler (M80) and companion linker, Link-80 (L80), either on a real Memotech computer, or on a PC using MEMU. Legacy tools such as these are shown in the CP/M section of the site.


Z80 Compatible Cross Assemblers (PC Versions)

  Title / Description

Publisher / Link

Frank's Cross Assembler

AS80 Version 1.42 Assembler for i8080-Z180 microprocessors.

[Used by Claus Baekkel for his Z80 game conversions]

Kingswood Computing




The Zilog ZDS assembler 

Zilog Development Studio I Version 3.68 includes an assembler that can target older Zilog devices, the original Z80 is not supported but setting the target to a Z180 is fine.

The software is available as a free download from the Zilog site.

[Used by Martin Allcorn to re-assemble his MTX ROM source file]



Available from the


Zilog Download Area


(Follow the links to Downloadable Software)


Yet Another GB-Z80/Z80/6502/65C02/6510/65816/HUC6280/SPC-700 Multi Platform Cross Assembler Package

Precompiled Win-32 Binaries available here

[Used by Paul Daniels to assemble his Noddy+ files]

Ville Helin


Available from





Hardware Programming Tools


Monolithic Memories Inc., inventor of the original PALs, provided PALASM software to program the devices. PALASM in a DOS application which does not appear to run in a DOS box under either WindowsXP or Windows 7. A number of alternatives are are shown below

National Semiconductor's Opal Jr. Version 2.1

Another very old program, comes in both DOS and Windows versions, although they won't run under Windows 7, both of then will run in Windows XP mode

National Semi.

Lattice Semiconductor, ispLEVER Classic

This software is available as a free download from the Lattice site. You will need to register on the site in order to get a (free) license to run the software. The current version supports Windows 7, Vista and XP.

Lattice Semi.

Atmel WinCUPL

This software is available as a free download from the Atmel site. You will need to register on the site to download the software. The current versions runs on Windows XP.




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