PC Engine 模拟器逆向 CPU 细节
推荐指数 32.0 NO. 018 · 2026.05.09
发布2026/05/08Score88Comments34
为什么值得看
作者为 1987 年主机 PC Engine（美版 TurboGrafx-16）编写模拟器，深入解析其 HuC6280 CPU 架构——一款基于 6502 改进但集成 PSG 音频和内存管理器的定制芯片。对复古游戏模拟和嵌入式系统开发者有参考价值，展示了如何在资源受限硬件上做架构创新。
编辑判断
这篇文章的深层价值在于展示了 80 年代主机厂商如何做 SoC 集成——NEC 把 CPU、PSG 和 MMU 塞进一颗芯片，比任天堂和世嘉的外置方案更省成本，但也导致模拟器必须精确处理时钟耦合。这种设计思路在今日的 MCU 和 RISC-V 定制芯片中仍有回响。
如果你在做嵌入式音频处理或复古游戏移植，HuC6280 的 7 通道 PSG 和可编程波形生成机制值得研究，它比 SNES 的 SPC700 更简单直接，适合作为学习音频合成硬件的起点。
社区反馈
正面 32 条评论
核心争论：8位高速CPU vs 16位慢速CPU孰优孰劣，TG-16图形能力是否被低估
The PC Engine CPU is highly underrated. People like to go "haha, it was the TurboGrafx-16 but its CPU was 8-bit" like that makes it a joke, but that clock speed boost on top of the 6502 architecture is a big deal. (The S-CPU on the SNES still has an 8-bit data bus too, so the 16-bit advantage isn't
>"haha, it was the TurboGrafx-16 but its CPU was 8-bit" Amusingly, TurboGrafx-16 is a US-specific name, so is the huge shell. In Japan, the console was called PC Engine and was really compact. Later revised as CoreGrafx and CoreGrafx II, both still the same fundamental hardware. I own the later vari
NEC made some great looking consoles, in Japan. The PC Engine, the PC Engine Shuttle, the IFU-30 unit "briefcase", and the SuperGrafx. I think console design peaked with the SuperGrafx. In the back of my mind, I have the idea that US regulations required extra shielding that the Japanese model lacke