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From:	Rugxulo <rugxulo AT gmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: please help me with VBE
Date:	Tue, 30 Mar 2010 12:52:34 -0700 (PDT)
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi,

On Mar 29, 4:41=A0pm, Pablo Marty <tigrepotrazosalv DOT  DOT  DOT  AT yahoo DOT com DOT ar>
wrote:
>
> I stole this, from 2 pages, from one the structs and from the other the c=
ode

What exactly is it supposed to do??   :-/

> I thought that with VBE my game would run faster under DOSBox than
> with VESA, because VBE treat the screen as just one array, ignoring the
> bank switching (or something like that)

Only old VESA 1.2 uses bankswitching. VESA 2.0 doesn't need it, and
99% of all cards support 2.0 these days (not true back in mid 90s).

Allegro should automatically choose the best graphics mode for you ...
if you let it. However, DOSBox is a full cpu emulator, hence it's
inherently slower than NTVDM + V86 mode (which no longer supports
graphics). The best you can do is close unnecessary background
processes and turn up the "cycles" (repeatedly press Ctrl-F12, I
think). Or try DOSEMU under Linux (much faster, V86 mode!!).

> I couldn't compile it .... does someone know where to find it more detail=
ed,
> or just the complete code without errors to use linear framebuffer with V=
BE?
> And about FreeDOS it's impossible install it without killing the actual s=
ystem ....
> I'll have to use DOSBox

What installed? VESA should be built into your BIOS. You can even
alternately use UNIVBE for older machines. (confused by the confusion)

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