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Mail Archives: djgpp/1995/01/15/17:37:49

From: Charles Sandmann <sandmann AT new-orleans DOT NeoSoft DOT com>
Subject: Re: Optimize your PC
To: enok AT lysator DOT liu DOT se
Date: Sun, 15 Jan 1995 15:55:30 -0600 (CST)
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu

> Therefore, I have measured the compilation times of my computer using
> 4 MB or 8MB respectively. Maybe someone is interested in the results,

Thanks, very interesting.

> Emm386.exe should be installed for optimum performance. (Why ???)

I noticed this when working on the free DPMI, it is related to the
amount of time required to toggle the A20 line with HIMEM.SYS.  It's
not toggled in VCPI mode, just a few PTE's are changed.  Toggles
are fast in "raw" mode without XMS when GO32 does it.  Strange.
DJ suggested not toggling each mode switch, but I haven't tested to
see if that would cause problems.

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