AC128 default prm file places nonbanked routines and constants only to segment ROM (20f0-7fff). It looks like you are out of this nonbanked space. To use ROM1 (c000-ff9b) for nonbanked routines and data you should:
1) Find INTO ROM; in your prm file and change it to INTO ROM, ROM1;
2) You need to add -OnB=b compiler switch to compiler command line. Or go to compiler setting and enable Disable Branch Optimizer = Disable Branch JSR to BSR optimization.