feipoa wrote on 2020-07-03, 06:53:
I am using Quake 3 Arena v1.32, which isn't the demo version. Anyway to disable MMX support entirely in this version of Quake 3?
I have just checked v1.32 (exe size: 905 216 bytes) and it does not conatain any MMX code either... So you simply do not have to disable MMX support since no such optimizations contained in executable.
But if you do not believe me check it for yourself with BIEW:
https://ecsoft2.org/biew
If exe contains MMX optimizations EMMS instruction always can be found (it looks like this):
But in Quake3.exe you can only find standard 386+ and x87/FPU code. With PageDown you can quickly scan the code for 'white' parts (white means P5MMX instructions) but you will find none :