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vidcrw95
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README.TXT
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1995-09-07
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Installation of miro drivers for Windows95:
Attention: Please don't try to install the miro drivers by running the
install.exe program. Use the 'change display properties' from
your control panel.
To install the miro drivers, proceed as follows:
* If you have not done so already, start your computer
* Open the Control Panel
* Click on Display
* Click the Settings folder
* Select Change Display Type... .The Change Display Type windows appears.
Here you can change the graphics board and the monitor type.
* To select another graphics board, click on the "Change" button.
* Click "Have Disk..." To specify the disk drive from which you install
the drivers: default is drive a:\.
Now there will be displayed the following model either
"miro S3 Graphicadapter/PCI", or "miro S3 Graphicadapter/VLB".
In case both options will be displayed, please select the model which
is corresponding to your miro graphics adapter and click "ok".
The computer is restarted. After the restart the new resolutions are
available.
In case of problems please watch the following hints:
1.) In case Windows 95 doesn't start VLB computers, you can change the base-
address for the linear memory adressing:
System.ini:
[Display]
LinBase=<Addresse>
i.e. 40320, or 60000
2.) For video graphics boards (Video 20SV, Video 40SV, Video 20SD, Video 40SV
ergo) you can switch the hardware scaler off or improved.
The entry are as follows:
System.ini
[Display]
VideoStretch=<Value>
Standardvalues:
greatest security : 257
best video + security : 259
best optic + security : 771
greatest performance : 261 <standard>
best optic + performance : 775
The Value can be calculated as follows:
[0 / 1] for DIB scaling by hardware [off / on]
+ [0 / 2] for DIB interpolation by hardware [off / on]
+ [0 / 4] for DIB scaling parameteradaption [off / on]
+ [0 / 256] for DDB scaling by hardware [off / on]
+ [0 / 512] for DDB interpolation by hardware [off / on]
3.) A DIB-engine driver is not usable for Video for Windows, but the
optimized drivers can be fully used, if the Pinboard will set the
entries depending on the selected display mode in the Win.ini file.
-> If possible start the Pinboard always starting Windows 95. The Pinboard
will correct the entries of Video for Windows automaticly.
4.) Using the miro Pinboard it could happen that, the switching from the
virtual modes into the real modes doesn't work at once. In this case we
recommend to switch first into the real mode resolution (640 x 480) and
after this into a higher resolution.
5.) For the miroCRYSTAL 20SV the highest resolution of 1408 x 1024 in 8 bit is in
Windows 95 at this time not available. This resolution will be available
with the next driver update. t couls happen that a resolution will be offered
in the Controlpanel, but you can't switch to this resolution. This means
Windows 95 will fall bach to the earlier resolution.
6.) During the installation of a miroVIDEO 20SD in Windows 95 it could happen
that both busadapter versions will be displayed. Make sure that you select
the right businterface, that means either PCI, or VLB, depending of the bus-
interface of your miro graphics board. Otherwise the miro graphics board can't
be installed for Windows 95 and the drivers doesn't work.