friend class NES_mapper0;
friend class NES_mapper1;
friend class NES_mapper2;
friend class NES_mapper3;
friend class NES_mapper4;
friend class NES_mapper5;
friend class NES_mapper6;
friend class NES_mapper7;
friend class NES_mapper8;
friend class NES_mapper9;
friend class NES_mapper10;
friend class NES_mapper11;
friend class NES_mapper13;
friend class NES_mapper15;
friend class NES_mapper16;
friend class NES_mapper17;
friend class NES_mapper18;
friend class NES_mapper19;
friend class NES_mapper20;
friend class NES_mapper21;
friend class NES_mapper22;
friend class NES_mapper23;
friend class NES_mapper24;
friend class NES_mapper25;
friend class NES_mapper26;
friend class NES_mapper32;
friend class NES_mapper33;
friend class NES_mapper34;
friend class NES_mapper40;
friend class NES_mapper41;
friend class NES_mapper42;
friend class NES_mapper43;
friend class NES_mapper44;
friend class NES_mapper45;
friend class NES_mapper46;
friend class NES_mapper47;
friend class NES_mapper48;
friend class NES_mapper49;
friend class NES_mapper50;
friend class NES_mapper51;
friend class NES_mapper52;
friend class NES_mapper57;
friend class NES_mapper58;
friend class NES_mapper60;
friend class NES_mapper64;
friend class NES_mapper65;
friend class NES_mapper66;
friend class NES_mapper67;
friend class NES_mapper68;
friend class NES_mapper69;
friend class NES_mapper70;
friend class NES_mapper71;
friend class NES_mapper72;
friend class NES_mapper73;
friend class NES_mapper75;
friend class NES_mapper76;
friend class NES_mapper77;
friend class NES_mapper78;
friend class NES_mapper79;
friend class NES_mapper80;
friend class NES_mapper82;
friend class NES_mapper83;
friend class NES_mapper85;
friend class NES_mapper86;
friend class NES_mapper87;
friend class NES_mapper88;
friend class NES_mapper89;
friend class NES_mapper90;
friend class NES_mapper91;
friend class NES_mapper92;
friend class NES_mapper93;
friend class NES_mapper94;
friend class NES_mapper95;
friend class NES_mapper96;
friend class NES_mapper97;
friend class NES_mapper99;
friend class NES_mapper100;
friend class NES_mapper101;
friend class NES_mapper105;
friend class NES_mapper112;
friend class NES_mapper113;
friend class NES_mapper117;
friend class NES_mapper118;
friend class NES_mapper119;
friend class NES_mapper122;
friend class NES_mapper151;
friend class NES_mapper160;
friend class NES_mapper180;
friend class NES_mapper181;
friend class NES_mapper182;
friend class NES_mapper183;
friend class NES_mapper185;
friend class NES_mapper187;
friend class NES_mapper188;
friend class NES_mapper189;
friend class NES_mapper225;
friend class NES_mapper226;
friend class NES_mapper227;
friend class NES_mapper228;
friend class NES_mapper229;
friend class NES_mapper230;
friend class NES_mapper231;
friend class NES_mapper232;
friend class NES_mapper233;
friend class NES_mapper234;
friend class NES_mapper235;
friend class NES_mapper236;
friend class NES_mapper237;
friend class NES_mapper240;
friend class NES_mapper242;
friend class NES_mapper243;
friend class NES_mapper245;
friend class NES_mapper246;
friend class NES_mapper248;
friend class NES_mapper255;
friend class NES_mapperNSF;
