Win OSI is an Ohio Scientific Computer emulator. It emulates the Superboard II, UK101, C1P C2P, and C4P. Oddly enough, I found the newer release runs rather poorly on my Windows 7 system. For this reason I have also included the older 2002 release in the download.
1.0b release = W_Osi_2008
2002 release = OsiEmu13.exe