[denzil]

My guess would be Mode X, it was quite popular in games at the DOS/VGA times: https://en.wikipedia.org/wiki/Mode_X

[bananaboy]

The default resolution is 360x480x256 colour, a variant on mode X also described by Abrash in his Dr Dobbs articles!

[malkia]

We didn't had access to that book then on, but it was described in various .txt files from demo groups, though I've found them later (like arround assembly 93 or 94 came out)