Core selection when c-code is in main.c?

[klausbusse]

I use an example project from Github, sc_sdcard running on CX-1A.
There is an "int main(void)," in a standard c code file.
The example program to access a scard is working perfect, but how can I find or define which CMOS core is used or what is the default core in case of use of standard c code instead of xc-code?
Best regards
Klaus

[Bianco]

The default tile is tile[0] (stdcore[0] in old terminology)

[klausbusse]

THX!