From the readme.txt:
It is emulator software of great machine "PC Engine"(TurboGrafx16).

2007/02/16 0.96 released
- Hello. I haven't seen you for a long time.
- Interrupt processing was modeled on a real machine more. In the ending of
"Formation Soccer '90", the problem of freezing was solved.
- In "Mugen Senshi Valis", the problem that the time display had been hidden
was solved. Moreover, in other some games such as "Fantasy Zone", I think
that the vertical display beginning position became it as well as a real
machine.
- Additionally, a detailed part has been improved and corrected".

Get it here:
http://www.ouma.jp/ootake/

-Trebor