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Panorama FAQ, Common questions
Q1: What is standard videomode? non-standard?
A1: Standard modes: 640x480, 800x600, 1024x768, 1280x1024, 1600x1200,
i.e. videomodes, defined in VESA standard.
All other videomodes are non-standard (16:9, 16:10, etc)
The list of supported modes is stored in Video BIOS of your adapter.
Q2: What is the advantage of color hardware cursor?
A2: If you are using color cursors (standalone or delivered with
eSchemes -- http://ecomstation.ru/eschemes) then usual driver will use
software mode to draw the cursor. This causes deceleration, because
vman.dll begins to follow the position of cursor and show/hide it on
screen updates. The problem shows itself when using media players,
This is impermissble for modern operating system, that's why
we have implemented color hardware cursor for eComStation and OS/2.
Q3: What is VMAN?
A3: VMAN.DLL is a component of GRADD. Developers are using this interface
for fast drawing of streaming video data.
VMAN is a point of serialization (access serialization to video card)
Q4: How to reset resolution and refresh rate if OS fails to boot?
A4: Boot to command line (Alt-F1) and run
x:\OS2\INSTALL\vcfgcid.cmd /RES:640x480x65536 /RR:60
Q5: How to measure the performance of Panorama videodriver?
A5: You can use sysbench and pmbench benchmarks
For today's applications having lots of pictures as well as
anti-aliased text, the by far most important scores are:
BitBlt S->S copy (= Memory->Screen)
BitBlt M->S copy (= Screen->Screen)
Q6: Why GRADD is not used in other OSes
A6: It is protected with patents: http://www.freepatentsonline.com/5745762.html
Q7: What is the need in Video BIOS today? Which OS uses it?
A7: Windows drivers don't use Video BIOS. That's why manufacturers of
video adapters do not test video BIOSes.. Modern Video BIOSes are buggy
Q8: Fonts on my 22" monitor are ugly
A8: How did you attached monitor? If via VGA then the picture is not perfect.
Attach monitor via DVI.
Q9: How to force Multimedia applications use dive?
A9: WarpVision: set play via DIVE
kpm -video dive file
mplayer -vo kva:dive
Q10: How to convince that LCD connected via VGA is safe for my eyes?
A10: Open this test picture
If the image is clear than you can work with the LCD.
If you see trembling/vibration of the picture, then don't work
with this cheap LCD monitor.
Q11: How to make video driver work with other video adapter?
A11: There are 2 cards in the computer. The video driver selects one,
you need the second. This is not possible. Video drivers can't help you.
All depends on video BIOSes