Date: Sun, 21 Sep 1997 13:05:32 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT edu DOT ar>
cc: djgpp AT delorie DOT com, spector AT EnchantedLearning DOT com
Subject: Re: DJGPP, interprocess communication, and DPMI
In-Reply-To: <m0xBfUB-000S1mC@inti.edu.ar>
Message-ID: <Pine.SUN.3.91.970921130509.9556B-100000@is>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Precedence: bulk


On Thu, 18 Sep 1997, Salvador Eduardo Tropea (SET) wrote:

> At least in my system the Windows clipboard seems to be slower than
> a virtual disk or even the HD with enough cache.
> I don't know why but the Win 3.1 clipboard works very slow (I tried coping 
> 300Kb from write).

How slow?  Can you post some numbers (e.g., a comparison between
`memcpy' of 100KB and `dosmemput' 100KB into the clipboard?

Most of the clipboard access is just copying data from protected-mode
memory to conventional memory.  If you use `movedata' or `dosmemput',
it shouldn't be slower than any other block move.

> I think one solution could be a real mode TSR loaded before windows.

This might or might not work with Windows 95, because it catches
real-mode interrupts on different levels and not always lets them go
all the way down to your TSR.