MS-DOS Player for Win32-x64 (2015/01/21) is released. MS-DOS Player is MS-DOS emulator running on Win32-x64 command prompt. 16bit MS-DOS compatible commands can be exexuted on Win32-x64 envrionment.

MS-DOS Player for Win32-x64 (2015/01/21) Changelog (Google Translate):

int 21h, I was fixed ah = 40h. When you specify a 0 to the number of bytes to be written, we support the process of truncating to the current position of the file pointer. Also, when you execute the int 10h relationship, you are forced so as to change the window size 80x25, Of after the end of MS-DOS Player, I was to return to its original size. This update, patch you provide to sava like you has become a group. Daily from, and I am allowed to DR-DOS System and Programmers Guide the (Japanese translation) greatly to the reference. It is truly Tacha Tacha.

Download: MS-DOS Player tested on Windows 7 (x64)(2015/01/21)
Source: Here