There's a good chance that booting real DOS from a HDD image inside DOSBox will fix whatever problems your app has with file/disk access. The trade-off with this method is that you can't access the files in the DOS environment from Windows as easily. I don't know what would help the performance of …

Hi, I would like to use an old instrument which has DOS control software and connects through serial port. I could start the software and it could communicate with the instrument through the serial port, but it throws an error and can not run its internal applications. I tried a DOSBox variant …