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Intelligent ISA cards don't work with DOS applications. Intelligent ISA cards don't work with DOS applications.
Symptom: With an intelligent Asynchronous card, I am unable to open the port with my DOS application.
Cause:
- The DOS device driver is not loaded.
- The application is running in a DOS window in a Windows environment.
- The application is looking for an IRQ and I/O address specific to the port, or is otherwise trying to talk to the COM port directly.
Solutions:
- Make sure the appropriate device driver is loaded before running the application.
- Digi will not provide support for our products when using them with a 16-bit application in a 32-bit operating environment.
- Because Digi intelligent boards only use one IRQ and I/O address, any DOS application that has these values hard-coded is not likely to work. To work with Digi intelligent serial boards, a DOS application must support INT14.
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