The emulator you are using is very old(around 10 years) and is not supported by ST now.The emulator may have difficulties with todays high speed PCs. So i will suggest you to use the latest Emulator for ST6(ST62GP-emu2) that support all ST62 devices except ST624X and ST628X.
Hello, I found the debugger for this tool. I attach it to this mail, but as the moderator said, it is quite old, then for example the connection is serial (RS232) and this debugger is under DOS.