## Input/Output Device Driver Reference

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### Programming a 32-Bit Touch Display Device

The APIs described previously are 16-bit; there are no 32-bit APIs available as yet for the Touch device. Programs compiled for the 32-bit flat model (CL386 - G3 switch) still can use the 16-bit API calls through the CL386 compiler's built-in 16- > 32-bit conversions. These conversions come into effect when pointer parameters and functions are declared with the _far16 keyword. The compiler then generates the necessary thunking code to perform the calls.