This installer installs vDosXy on your computer. vDosXy provides a virtual environment that emulates DOS for use with DOS versions of programs of the XyWrite family: XyWrite 3 or 4, NotaBene 3 or 4, and IBM Signature. This means that you can run these programs even under modern 64-bit versions of Windows.

Please note: 

- Why even consider vDosXy, and not vDosPlus? vDosPlus is based on newer vDos code, has better support, and many enhancements. If you encounter certain keyboard problems (e.g. cursor keys not functioning properly) in XyWrite 3 or NB 3, vDosXy might work better due to the different codebase. XyWrite 4 users should perhaps stick to vDosPlus. 

- If you have a previous installation of vDos or vDosPlus, you should install this application in another folder. The engine and the support files are different and should not be mixed.

- There are two versions of vDosXy.exe, namely version 1.00 and version 1.10. Each of the two versions has been updated to a newer installer version, so there are two current installer versions, 1.01 and 1.11 respectively. The underlying vDosXy.exe has not changed.

There are separate installers for the two available versions of vDosXy.exe:

vDosXy version 1.00/1.01 (aka version 2014-12-16)
How to tell it apart: size 368 KB, has the following config.txt options: euro=off (to show C cedilla), title=titletext, blinkc=ON (for a blinking cursor)
Source files: 
https://github.com/catastrophicanomaly/vDosXY3/releases/tag/vdos20141019_mod20141216

vDosXy version 1.10/1.11 (aka version 2015-04-24)
How to tell it apart: size 858 KB, has +XMEM option, "euro=off" is default behavior, and "euro=off" directive should be removed from config.txt
Source files: 
https://github.com/catastrophicanomaly/vDosXY3/releases/tag/vDos20150410_mod20150424

- It is possible to switch your vDosXy version from 1.00/1.01 to 1.11, or from 1.10/1.11 to 1.01, just by running the appropriate installer installing on top of a previous setup folder. Your previous custom AUTOEXEC.TXT and CONFIG.TXT files are backed up during every installation when you install in the same folder. Thus, you can manually restore their values to your current setup after the install. The uninstaller also preserves your AUTOEXEC.TXT and CONFIG.TXT files and their backup files.

You can check the version of your current vDosXy installation by issuing the VER command at the DOS prompt, or by looking up 'vDosXy version' in 'Start, Programs'.