Hello, If you installed Dynamic C 9.62 successfully in your development PC, the STDBIOS.C file should be under below path,
C:\DCRABBIT_9.62\Lib\BIOSLIB
If the file is not there, I suspect that, Dynamic C did not install properly. If this is the case , uninstall Dynamic C 9.62 from the "programs and features" then install once again.
Thanks.