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Multiplatform Z80 Assembly Development tools

Download the new 2026 toolkit - Last update 2026/2/22... New scripts for bigger game files!

Download the latest sample code - These are updated regularly - Get this and copy over the files in the toolkit

* Please Download both and extract - and copy the files in Sources.7z OVER those in Z80DevTools *

Download the old 2021 toolkit - Last update 2021/8/08... Now includes ZX81 support!

Watch the Introduction on Youtube!

The Author strives to ensure these DevTools should all still work on even Windows XP!

The author of these Tutorials uses Linux as his main OS, and does RetroDev in a Windows 7 VM, so even if you don't use windows as your main OS, you should be able to run them in a VM, or any old 'junk pc' you may find!

Hint: You can find XP install iso's on Archive.org that don't require activation if you don't have an OS disk to hand!

Introduction
These Z80 tools are a collection of free software I have collected together with some scripts to allow them to be easily used.
These tools are intended to allow a relative beginner to compile simple programs that will compile to multiple 8 bit destination systems.

Disclaimer
Please use these tools at your own risk.
They are provided freely in the hope they will be of use, and have been tested to the best of my ability but I cannot test in all situations or guarantee they will not harm your computer in some unexpected way.
These tools have been tested on Windows 10 (32 & 64 bit), Windows 7 64 bit, and Windows XP 32 bit
With the exception of MsxHeader and PlusThreeHeader and the scripts and examples I did not write the tools provided in this kit - to my knowledge, all the tools in here are Free and open source, and there is no reason they cannot be redistributed - If you know otherwise, please notify me and I will take appropriate action to resolve the issue.

Press F6 in Notepad++ to bring up the assembly menu

Usage
1. Create a folder on your computer (Such as LearnZ80)

2. Extract all the Devtools into that folder (Keeping paths)

3. Extract the sources folder from sources.7z into that folder (keeping paths - overwrite if needed - the sources files are newer)

4. Take a look in that LearnZ80 folder... you should see a file called 'Zdrive.bat' - run it now.

A new drive letter should 'appear' 'Z:' (or X or y if you already had a Z)

This is a fake drive via the 'Subst command' and is just a convenient way to access the files in the folder you created... the reason my devtools use it is it's an easy way to create a guaranteed directory structure that can be referenced by absolute paths.

5. From that Z Drive click on !Notepad++.bat to start notepad... open the file you want and assemble - everything should work fine.

5. When you are done use "Zdrive-remove" to remove the Z drive
Please see my Youtube channel for more examples of how to use these tools.

Notes

WabbitEmu will not work without a rom file - I cannot provide roms to licensing, so please supply your own
MSX_Disk will not work without Sony HitBit rom files (or reconfigure the script to use other rom files you have) - I cannot provide roms to licensing - MSX_GO does not use disk roms and will work fine.
EP128emu has OpenGl disabled in the batch file - this is because it caused problems during testing on my Windows 10 virtual machine - it's likely to be an isolated issue, so please edit the ENT_xxx.bat files if you want better performance.

The included version of Wabbitemu and OpenMSX are not the latest, this is to maintain WindowsXP compatibility... I did this to make it easy for people who don't use windows to use these tools in a virtual machine - you can update these programs to the latest version if you wish.

I've been playing a bit with programming on the Enterprise 64/128, and I'm pretty impressed with the hardware, but because of the relative obscurity of the system, and its failure in the UK, finding english resources has proved difficult.