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DOSVAXJ3

nanshiki.co.jp

Free plan WindowsmacOSLinux
Visit nanshiki.co.jp
Spec score 7.6 #15 of 26 in MS-DOS Emulators

What it is

DOSVAXJ3 is a free emulator for AX, J-3100, and DOS/V systems, based on DOSBox. It runs on Windows, Linux, and macOS, starting in DOS/V mode; J-3100 mode is enabled through the configuration file. Japanese keyboard and text entry work through Windows or macOS IME or Linux XIM. Japanese fonts are included, and additional font files can shape the display like original hardware. The emulator boots Toshiba DOS, DOS/V, and other disk-image files. It supports long filenames and copying displayed text to the clipboard. The maker lists Windows 7, 8, 10, and 11, plus Linux and macOS. Windows downloads include 32-bit and 64-bit executable bundles and separate debugger bundles. Linux and macOS users must build and install SDL-IM-plus before building their versions. DOSVAXJ3 is listed under GPL v2, with source code on GitHub.

Spec sheet

Purpose
DOSVAXJ3 is an emulator for AX, J-3100, and DOS/V based on DOSBox.Read 9 Oct 2026 · nanshiki.co.jp
License
The maker lists DOSVAXJ3 under the GPL v2 license.Read 9 Oct 2026 · nanshiki.co.jp
Booting
It can boot from Toshiba DOS, DOS/V, and other disk image files.Read 9 Oct 2026 · nanshiki.co.jp
DOS/V and J-3100
It starts in DOS/V mode by default, and J-3100 mode can be enabled through the configuration file.Read 9 Oct 2026 · nanshiki.co.jp
Download formats
The download section lists 64-bit and 32-bit Windows executable bundles, plus separate debugger bundles.Read 9 Oct 2026 · nanshiki.co.jp
File and clipboard support
It supports long filenames and copying on-screen text to the clipboard.Read 9 Oct 2026 · nanshiki.co.jp
Fonts
It includes Japanese font support and can use font files to make the display resemble the original hardware.Read 9 Oct 2026 · nanshiki.co.jp
Japanese input
It supports Japanese keyboard input and Japanese text input through Windows and macOS IME or Linux XIM.Read 9 Oct 2026 · nanshiki.co.jp
Linux and macOS build requirement
The maker says to build and install SDL-IM-plus before building the Linux or macOS version.Read 9 Oct 2026 · nanshiki.co.jp
Maker background
The maker says Nanshiki has developed software since its founding in 1995, including embedded-control firmware, Windows applications, internet servers, and databases.Read 9 Oct 2026 · nanshiki.co.jp
Operating systems
The maker lists Windows 7/8/10/11, Linux, and macOS as supported operating systems.Read 9 Oct 2026 · nanshiki.co.jp
Source code
The maker links to the DOSVAXJ3 source code on GitHub.Read 9 Oct 2026 · nanshiki.co.jp

Plans and prices

DOSVAXJ3 Free Windows downloads; macOS and Linux builds from source · GPL v2 Read 9 Oct 2026 · nanshiki.co.jp

Every DOSVAXJ3 plan and price →

Strong points and limits

Strong points

  • Free software under GPL v2
  • Japanese keyboard and text input support
  • Boots multiple DOS disk-image types
  • Supports long filenames and clipboard copying
  • Windows 32-bit and 64-bit bundles available

Limits

  • Linux and macOS builds require SDL-IM-plus first
  • Linux and macOS versions are built from source
  • J-3100 mode requires configuration-file changes

Who it suits

DOSVAXJ3 suits users who need AX, J-3100, or DOS/V emulation with Japanese input and display support. It is also for people comfortable building Linux or macOS versions from source.

Verdict

DOSVAXJ3 combines DOSBox-based emulation with Japanese keyboard, text, and font handling. Windows users get executable bundles, while Linux and macOS users follow a source-build process with an additional SDL-IM-plus prerequisite.

Where Specifiction places it

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