GPC and OS/2

Hello, I installed the version of GPC patched for emx running in OS/2. Has anyone made an OS/2 header file that works for API calls? Can someone show me a snippet of code showing how to incorporate an assembler procedure into a program? WriteStr doesn't work - "unresolved external". Writeln is sometimes called multiple times. TIA Allan D. Derickson -- Derickson Forestry Services -- Freeland, WA USA ----------------------------------------------------------- alland@whidbey.com -----------------------------------------------------------