Nextor

Nextor is a disk operating system for MSX computers. It is built on top of the source code of MSX-DOS 2.31, released in 1991.

The source code of Nextor is published with permission from the MSX Licensing Corporation under certain terms. Please take a moment to read the license terms for details.

Please visit the Nextor section in Konamiman's MSX page for binaries.

Repository structure

Note that there is no master branch, but branches for each major version of Nextor (v2.0 and v2.1 currently).

• source: The source code of Nextor itself.

  • kernel: The kernel ROM, includes the FDISK tool.

  • command: NEXTOR.SYS, COMMAND2.COM and the command line tools that were originally supplied with MSX-DOS.

  • tools: The new command line tools created for Nextor.

• wintools: Windows tools needed for building Nextor. Includes the source for two custom made tools: mknexrom (C) and SymToEqus (C#).

• docs: Documentation for both users and developers.

How to build Nextor

You need:

1. A Windows machine (if you don't have one see "No Windows?" below)
2. SDCC (http://sdcc.sourceforge.net), targetting the Z80 processor, to build FDISK.
3. .NET Framework 2.0 or higher (for the SymToEqus tool in the wintools folder)
4. The wintools folder must be added to the PATH environment variable

To build the Nextor kernel

Run the compile.bat script located in the source\kernel folder. If the FDISK tool has not been compiled already (the fdisk.dat and fdisk2.dat files do not exist in the bank5 folder), they will be compiled on the fly.

The generated kernel base file and the complete ROM files will be generated in the bin\kernels folder. One ROM file will be generated for each folder existing in the source\kernel\drivers folder.

To build the FDISK tool only

If you make a change in the FDISK tool, you can compile it without having to compile the full kernel again. Just run the compile.bat script in the source\kernel\bank5 folder (do NOT run compfdsk.bat). The ROM files in bin\kernels will be appropriately updated.

To build the command line tools

Run the compile.bat script in the source\tools folder. The tools will be generated in the bin\tools folder.

To build NEXTOR.SYS

Run the compile.bat script in the source\command\msxdos folder. The file will be generated in the bin\tools folder.

To build COMMAND2.COM

Run the compile.bat script in the source\command\command folder. The file will be generated in the bin\tools folder.

At this time there's no specific script (other than the original makefile) for building the original MSX-DOS command line tools.

No Windows?

If your machine doesn't run Windows you can still build Nextor by using Xesco's Nextor builder.