Microsoft provided a free Windows XP Mode for Windows 7. Since XP can run 16-bit apps, this is your best bet.
: As an 8-bit/16-bit era application, CASmate Pro 6.52 cannot natively run on 64-bit versions of Windows 7 without emulation or specialized workarounds. Hardware Dongles casmate pro 652 windows 7 64 bit download full
Running a virtual Windows XP environment inside Windows 7. Microsoft provided a free Windows XP Mode for Windows 7
: The most reliable way to use legacy CASmate on a modern PC is to install Windows XP Windows 98 inside a virtual machine (like Oracle VM VirtualBox ) and pass the hardware dongle through to the virtual OS. Paper: The Evolution and Obsolescence of CASmate Pro casmate pro 652 windows 7 64 bit download full