我家里留有一台CRT显示器，NESO 768G

最近在纯DOS环境下玩低解DOS游戏，比如波斯王子，支持320×200×256色模式

但我这台NESO显示器在纯DOS环境下的分辨率是（按OSD显示的）720x400@70Hz 或 640x400@70Hz，似乎不能调出原生320x200@70Hz，观感就是DOS波斯王子的低解画面被硬件倍线插值了，虽然效果不差，但少了以前低解的韵味

要完美还原低解DOS游戏就得买台老的VGA显示器吗？

引用:

原帖由 wuyingjun 于 2016-4-13 19:47 发表
CRT  

640x400@70Hz  和 320x200@70Hz  

是一样的效果的

我在维基上看到类似的说法，但我不太理解一样的效果是什么意思？ 320毕竟只有640的一半啊

引用:

640x400 @ 70 Hz is traditionally the video mode used for booting most VGA-compatible x86 personal computers which show a graphical boot screen (text-mode boot uses 720x400 @ 70 Hz).
320x200 @ 70 Hz is the most common mode for VGA-era PC games, using exactly the same timings as the 640x400 mode, but halving the pixel rate (and, in 256 colour mode, doubling the bit-depth of each pixel) and displaying each line of pixels twice.

引用:

原帖由 wuyingjun 于 2016-4-13 19:47 发表
CRT  

640x400@70Hz  和 320x200@70Hz  

是一样的效果的

引用:

原帖由 yangjuniori 于 2016-4-14 01:17 发表
posted by wap, platform: Chrome
double scan

我搜到一张图，你们表述的大概是这个意思吧，低解320x200@70Hz在VGA显示器上会被double scan成640x400@70Hz？

引用:

At this point another difference between CGA/EGA and VGA has to be mentioned: Double scan in low resolution modes. VGA monitors never really display just 200 lines, instead they double the resolution to 400 lines by displaying each line twice, which looks quite a bit different than on a real CGA/EGA monitor.

懂了