Re: video adapter problem
I believe what might be happening, is that the ATI chip does not
automagically scale video to fit the LCD, but that there are special video
modes available for that instead, that Windows and the BIOS would use by
default. Thus, when a game in DirectX calls for 320x200, it selects a
scaling video mode so that it fills the 800x600 display, otherwise it would
only fill the top 320x200 portion of the screen.
Dave Cousins
-- LRS Educational Technology Support
-- Bow Valley College, Calgary
-- phone (403) 297-6665
-- email dcousins at bowvalleyc.ab.ca
-----Original Message-----
From: Euphoria Programming for MS-DOS
[mailto:EUPHORIA at LISTSERV.MUOHIO.EDU]On Behalf Of Franco M.
Sent: Monday, December 11, 2000 4:17 AM
To: EUPHORIA at LISTSERV.MUOHIO.EDU
Subject: video adapter problem
I need help for my new Toshiba satellite 1620.
The problem is:
"graphics modes 256 to 261 don't work. I see everything comressed in the
upper part of the screen".
I use DOS 6.22, Euphoria for DOS 2.0 (but 2.2 works the same). The notebook
is equipped with CPU AMD K6 2-3d 475 MHz and 32 MRAM, graphic adapter is an
ATI rage lt pro.
Toshiba does not support this PC in DOS, so I steel can't find an audio
adapter (thanks Toshiba...), but I found a DOS graphic adaptor in ATI
website wich should be OK for this graphic adapter.
I installed it, and I found:
* my flight simulator now works well if I run it as if I had a "vesa
1.2".
* Euphoria mode 259 seems to work better (I read text more clearly)
but I steel see everything compressed in the upper part of the screen.
An ATI utility says that graphic adaptor and LCD screen works up to 800 x
600 mode.
I tried to use "machine.e" library and the instruction use_vesa (1) without
any result.
Of course the same Euphoria program works well when run on another PC.
Can someone help me?
Thanks
Franco
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