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We are looking into the feasibility of porting an existing DOS program (written in (old) Microsoft C++ V1.52 and compiled within that IDE) to a real-time Linux
program running on the same platform. This is a relatively simple program that reads several A/D converter channels, crunches some numbers, and (at present)
produces an ASCII serial output data stream and an analog voltage. We need to implement USB and/or ethernet as output options which is one reason for moving from DOS. The platform is the Diamond Systems "Helios" board with DAQ (on-board 16-bit I/O is resident to the CPU board). See this link: [obscured] /products/helios. Our custom I/O board interfaces to the Helios board in a 2-board PC104 stack.
At present we are using direct port I/O (outp and inp) to deal with the I/O, but Diamond Systems offer a free Linux version of their "Universal Driver" software which contains all of the functions necessary to accomplish the same I/O tasks (see link above). One key for us...
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