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DOSVAXJ3
What it is
DOSVAXJ3 is free software that emulates AX, J-3100, and DOS/V systems using DOSBox. It runs on Windows, Linux, and macOS, with the maker listing Windows 7, 8, 10, and 11 among supported systems. DOS/V mode starts by default, while J-3100 mode can be enabled in the configuration file. Japanese keyboard and text entry work through Windows or macOS IME or Linux XIM. Japanese fonts are included, and font files can adjust the display toward original hardware. DOSVAXJ3 can boot Toshiba DOS, DOS/V, and other disk-image files. It supports long filenames and copying displayed text to the clipboard. 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 the software. The project is GPL v2 licensed, with source code linked on GitHub.
For and against
For
- Free plan with no listed charge
- Supports Windows, Linux, and macOS
- Japanese keyboard and text input
- Boots multiple DOS disk-image types
- Copies displayed text to clipboard
Against
- Linux and macOS require source builds
- SDL-IM-plus must be installed first
- J-3100 mode requires configuration changes
The verdict
DOSVAXJ3 combines several Japanese DOS environments with Japanese input, fonts, disk-image booting, and clipboard support. Windows users get executable bundles, while Linux and macOS users build it from source under GPL v2.
Who it suits
DOSVAXJ3 suits users who need AX, J-3100, or DOS/V emulation with Japanese input. It is also relevant to users comfortable building software from source on Linux or macOS.
Plans and prices
DOSVAXJ3
Windows downloads; macOS and Linux builds from source · GPL v2
Read 9 Oct 2026 · nanshiki.co.jp
On the record
- Booting
- It can boot from Toshiba DOS, DOS/V, and other disk image files.nanshiki.co.jp · read 9 Oct 2026
- DOS/V and J-3100
- It starts in DOS/V mode by default, and J-3100 mode can be enabled through the configuration file.nanshiki.co.jp · read 9 Oct 2026
- Download formats
- The download section lists 64-bit and 32-bit Windows executable bundles, plus separate debugger bundles.nanshiki.co.jp · read 9 Oct 2026
- File and clipboard support
- It supports long filenames and copying on-screen text to the clipboard.nanshiki.co.jp · read 9 Oct 2026
- Fonts
- It includes Japanese font support and can use font files to make the display resemble the original hardware.nanshiki.co.jp · read 9 Oct 2026
- Japanese input
- It supports Japanese keyboard input and Japanese text input through Windows and macOS IME or Linux XIM.nanshiki.co.jp · read 9 Oct 2026
- License
- The maker lists DOSVAXJ3 under the GPL v2 license.nanshiki.co.jp · read 9 Oct 2026
- Linux and macOS build requirement
- The maker says to build and install SDL-IM-plus before building the Linux or macOS version.nanshiki.co.jp · read 9 Oct 2026
- Maker background
- The maker says Nanshiki has developed software since its founding in 1995, including embedded-control firmware, Windows applications, internet servers, and databases.nanshiki.co.jp · read 9 Oct 2026
- Operating systems
- The maker lists Windows 7/8/10/11, Linux, and macOS as supported operating systems.nanshiki.co.jp · read 9 Oct 2026
- Purpose
- DOSVAXJ3 is an emulator for AX, J-3100, and DOS/V based on DOSBox.nanshiki.co.jp · read 9 Oct 2026
- Source code
- The maker links to the DOSVAXJ3 source code on GitHub.nanshiki.co.jp · read 9 Oct 2026
