Rockwell Automation 1747-PCINT API Software for 1746 I/O - Manual (Page 20)

2–4 Using the API
Publication 1747-6.5.3 June 1998
Tools to Use The API functions support both Microsoft and Borland C compilers. The API disk
includes sample MAKE files for each compiler.
When you use the DOS API and link to ocapil.lib , use the appropriate command-
line switch to select the large memory model. For more information, see your user
manual for your compiler.
If you plan to use a programming language other than C, make sure the programming
language follows the appropriate calling convention (Pascal for the DOS API;
Win32 _stdcall for Windows NT). After you write your application, use your
compiler to link to
ocapil.lib (DOS) or ocapi.lib (Windows NT).