The FIRST time run DOS programs only,it will show "Invalid keyboard code specified".
Run DOS1.exe --> show "Invalid keyboard code specified".
Run DOS2.exe --> NO show "Invalid keyboard code specified".
Run DOS3.exe --> NO show "Invalid keyboard code specified".
Run DOS4.exe --> NO show "Invalid keyboard code specified".
Run DOS5.exe --> NO show "Invalid keyboard code specified".
.........
The FIRST time run DOS programs only,it will show "Invalid keyboard code specified".
Run DOS1.exe --> show "Invalid keyboard code specified". Run DOS2.exe --> NO show "Invalid keyboard code specified". Run DOS3.exe --> NO show "Invalid keyboard code specified". Run DOS4.exe --> NO show "Invalid keyboard code specified". Run DOS5.exe --> NO show "Invalid keyboard code specified". .........