🚀 go-pugleaf

Lawrence Kirby <fred@genesis.demon.co.uk> wrote:

>Certainly, they are 32 bit applications even running under DOS (they use
>32 bit DOS extenders). Only things like disk I/O have o use 16 bit code
>and CPU speed isn't particularly relevat there since it is waiting for the
>disk most of the time.
>

32-bit doesn't mean that you are using a flat memory model.  The latter is 
just as important as using 32-bit registers for data.  Segmented memory 
causes you to subvert the branch prediction model of the P-PRO which 
causes all sorts of processor stalls apparently.  

>>And wait for a 
>>Pentium Pro built version of Quake for NT 4.0 with Xdirect video and 
>>sound. 
>
>The only reason an NT version would run faster in normal play is if it
>were able to use some of the features of the graphics/sound cards better.
>This is relevant but not a 16 vs 32 bit code issue.

Not exactly.  If the drivers and the graphics API are all fully 32-bit, 
you'll get better performance from the 32-bit versions.  Win95 uses 16-bit 
graphics (and some video/sound drivers are still 16-bit), so your doomed 
to slowdom on a Pentium PRO.  WinNT 4.0 would give you much superior 
graphics performance under the PRO.  

-----------------------------------------------------------------------
Edmond Underwood
E-mail:  underwoe@rmii.com
Bench32 1.20 - The new threshhold in system benchmarking.
Bench32 web site:  http://www.rmii.com/~underwoe/bench32.html.