Hi!

os24u{at}wisdomtree.info wrote:
>  Original setup:
> 
> Warp 4 fix15 primary video card: pci S3 2mb, secondary: pci s3 1mb
> Intended primary svga, secondary vga.  Persistent display freeze when
switching out of full-screen sessions.
> 
>  Second setup:
> primary:  agp Matrox G200
> secondary: pci s3 1mb
> 
> Bios had to be changed for video display to AGP to get Matrox
functioning.  Now tried to setup dual video display.   System appears to
believe
> there is no secondary display

> May I assume that an agp and pci card can NOT be used together?  
> If agp is used are all the pci slots available?

They can be used together but neither OS/2 nor eCS supports it. ;)
OS/2 and eCS should support a primary (s)vga card + a secondary hercules
monochrome card(don't confuse this with the card manufacturer)

What you should do to get your two screen is (NOTE: Both need to run the
same resolution!!!):
1.) Buy the full version of the SciTech SNAP driver (you can try it first
if you don't have it already)!
     ftp://ftp.scitechsoft.com/snap/os2/beta/
     The latest release is currently v3.1.3!
2.) Buy a Matrox G450/G550 (with newer Matrox cards the DualHead function
is not supported) or one of the other supported cards (see secton
"Supported Graphics Chips for MultiHead") listed at the SciTech
SNAP Readme file (see ftp://ftp.scitechsoft.com/snap/os2/beta/readme.txt).
     An ATI card is prefered if you want to use a DFP connected to the DVI
connector (see section "Supported Flat Panel Graphics Chips").
     Choosing an ATI card will also give you some additional features (e.g.
Overlay and native panel programming).


Here the interesting parts of the readme.txt:
=============================================
[...SNIP...]

Supported Flat Panel Graphics Chips
-----------------------------------

The following is a list of graphics chipsets that are working with digital
flat panels.  Other chipsets will work with flat panels in analog mode.
Please note that if you can't see anything on the display when you boot your
machine, SciTech SNAP Graphics can't fix this, as it is a hardware problem.
Unless otherwise noted, the flat panel interface used is DVI.  Also note
that digital flat panel monitors do not support refresh rate control,
although they may emulate it when running in analog mode.  Currently, modes
available on digital flat panels are limited to those provided by the video
BIOS, which in most cases does not go higher than 1280x1024.  The only
exception to this is the ATI Radeon chipsets, which now feature native
panel programming.

. ATI 3D Rage LT Pro (DFP), Rage XL (DFP), Rage 128 Pro, Rage 128 Ultra
. ATI Radeon 7000, Radeon 7200, Radeon 7500, Radeon 8500, Radeon 8500DV
. ATI Radeon 9000 Series, Radeon 9100, Radeon 9200 Series, Radeon 9500
. ATI Radeon 9500 Pro, Radeon 9550, Radeon 9600 Series, Radeon 9600 XT
. ATI Radeon 9700 Pro, Radeon 9800, Radeon 9800 Pro, Radeon 9800 XT
. ATI Radeon X300 Series, Radeon X550, Radeon X600 Series, FireMV 2200
. ATI Radeon X700 Series, Radeon X800 Series
. Intel i845G, i865G, i915G/GV, i945G
. Matrox MGA-G200 (DFP), MGA-G400, MGA-G450, MGA-G550, MGA-P650, MGA-P750
. Matrox Parhelia
. VESA VBE 2.0, VBE 3.0

[...SNIP...]

Supported Graphics Chips for MultiHead
--------------------------------------

The following is a list of graphics chipsets that have support for MultiHead
display output.

. ATI Radeon 7000, Radeon 7500, Radeon 8500, Radeon 9000 Series
. ATI Radeon 9100, Radeon 9200 Series, Radeon 9500, Radeon 9500 Pro
. ATI Radeon 9550, Radeon 9600 Series, Radeon 9600 XT, 9700 Pro
. ATI Radeon 9800, Radeon 9800 Pro, Radeon 9800 XT, Radeon X300 Series
. ATI Radeon X550, Radeon X600 Series, FireMV 2200, Radeon X700 Series
. ATI Radeon X800 Series
. Matrox MGA-G450, MGA-G550
. NVIDIA GeForce4 MX 420, GeForce4 MX 440, GeForce4 MX 440 8X
. NVIDIA GeForce4 MX 460, GeForce4 Ti 4200, GeForce4 Ti 4200 8X
. NVIDIA GeForce4 Ti 4400, GeForce4 Ti 4600, GeForce4 Ti 4800
. NVIDIA GeForce FX 5200, GeForce FX 5500, GeForce FX 5600 Series
. NVIDIA GeForce FX 5700 Series, GeForce PCX 5300, GeForce PCX 5750
. NVIDIA GeForce 6600 Series

Please note that there are some restrictions imposed for MultiHead:

1. Only CRT (15-pin VGA) output is supported for MultiHead at this time.
    You may need to use DVI->VGA connectors on some graphics cards.  The
    only exception to this is the ATI Radeon chipsets, which can also do
    multihead in CRT+DFP configurations, due to native panel programming.
    CRT+LCD, CRT+TV, and DFP+DFP are all unsupported at this time.

2. You cannot use zooming when the desktop is in a MultiHead mode.

3. When the desktop is in a MultiHead mode and you change the MultiHead
    settings, you should reboot before switching away from the desktop
    (i.e. opening any fullscreen sessions), or your desktop will become
    corrupted.  The mouse cursor position may also be incorrect when you
    are running in this in-between state.

4. On Matrox chipsets, hardware mouse cursor and 256 color modes will not
    be available; these are hardware restrictions.

5. On older Nvidia chipsets, 16M color modes wider than 2040 will not be
    available; this is a restriction of the NV1 interface.  Only cards
    where the video BIOS properly initializes both heads (in other words,
    it boots in clone mode automatically) are supported.

[...SNIP...]

Kind regards,
Juergen Ulbts (Germany)


 
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