Message-ID: <35DA884C.3DAF6A05@geocities.com>
From: Merlin <merlin__ AT geocities DOT com>
MIME-Version: 1.0
Newsgroups: comp.os.msdos.djgpp
Subject: Re: -= Hi RES GraphicS =- , HOW in DJGPP ?
References: <35DA143C DOT CC91D2A9 AT hotmail DOT com>
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Date: Wed, 19 Aug 1998 08:13:28 GMT
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NNTP-Posting-Date: Wed, 19 Aug 1998 03:13:28 CDT
Organization: MBnet Networking Inc.
To: djgpp AT delorie DOT com
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shay wrote:

> hello group,
>
> can someone please send me a short code of how to switch to a
> resolution,
> like 800 * 600 / 16BIT , write a pixel , and change the pallete .(in
> DJGPP..)
>
> when i tried it myself i blew my display adapter ..........
> lucky for me my warranty was still on .
>
> if it matters , i have Diamond Stealth 64 Video with 4MB VRAM.
>
> so you see why i need BIG HELP,
>
> shay hatsor ,
>
> path_finder2 AT hotmail DOT com

  it's easy to switch to the mode..(check the VESA 1.2 or 2.0 docs....)
it's using the mode that's the hard part...
here's how to switch to a vesa mode

Func 2h : Set VBE mode
in : ax    = 4f02h
     bx    = bit 0-8 : mode # (0h thru 1ffh)
             bit 9-13 : Reserved (must be 0)
             bit 14 : =1 use linear/flat frame buffer model (VBE 2.0+
only)
                      =0 use windowed/banking frame buffer model
             bit 15 : =1 clear display memory
                      =0 don't clear memory
out: ax    = VBE status

I don't know what mode number 640x480 16 bit is...but it's in the vesa
docs.
oh yes...and if this does blow up your computer, i take no
responsibility...but it shouldn't


l8r.
     Merlin.