return(new t_uc89c51r(cpus_51[i].type, cpus_51[i].technology, this));
case CPU_251:
return(new t_uc251(cpus_51[i].type, cpus_51[i].technology, this));
return(new t_uc89c51r(cpus_51[i].type, cpus_51[i].technology, this));
case CPU_251:
return(new t_uc251(cpus_51[i].type, cpus_51[i].technology, this));