I downloaded reads51.zip package using a link from this site, and have a problem with simulator RCHPSIM. Everything seems O. K., until you try to close window with SFRs or a memory (which you open before). Then the program terminates with an error such as "Unhandled Exception" with some registers/memory contents. This happens under plain DOS 6.2 and under Windows 95 DOS prompt.

Is this a bug, an ugly feature, or I have forgotten working with some DOS settings?

Ivan