为什么儿时的游戏没有loading，而现代游戏都有？

画面引用： Famicom Disk System - Startup The Nintendo Entertainment System's Loading Seam The Story of the Famicom Disk System Loading Screens in Video Games NES Architecture Explained Nintendo Famicom Facts that will Blow Your Mind! Nintendo Manufacturing Plant & Famicom Online -B-Roll - 1990 RAM解释-随机存取存储器 Sledgehammer in office Switch Loading Times! Cartridges vs Micro SD vs Internal Storage! BGM: 超级马里奥3 吉米克（Gimmick） 萨尔达传说（磁碟机版）