content: package com.grapeshot.halfnes.mappers;
  
  import com.grapeshot.halfnes.*;
  
  public class Mapper60 extends Mapper {
  
      int reg = 0;
  
      @Override
      public void loadrom() throws BadMapperException {
          //needs to be in every mapper. Fill with initial cfg
          super.loadrom();
          //remap CHR bank
          for (int i = 0; i < 8; ++i) {
              chr_map[i] = (1024 * i) & (chrsize - 1);
          }
          //remap PRG bank
          for (int i = 0; i < 16; ++i) {
              prg_map[i] = (1024 * i) & (prgsize - 1);
          }
          for (int i = 0; i < 16; ++i) {
              prg_map[i + 16] = (1024 * i) & (prgsize - 1);
          }
      }
  
      @Override
      public void reset() {
          reg = (reg + 1) & 3;
  
          //remap CHR bank
          for (int i = 0; i < 8; ++i) {
              chr_map[i] = (1024 * (i + 8 * reg)) & (chrsize - 1);
          }
          //remap PRG bank
          for (int i = 0; i < 16; ++i) {
              prg_map[i] = (1024 * (i + 16 * reg)) & (prgsize - 1);
          }
          for (int i = 0; i < 16; ++i) {
              prg_map[i + 16] = (1024 * (i + 16 * reg)) & (prgsize - 1);
          }
      }
  }
  