                                                             10 August 1994

------------------------------------------------
miro Video Accelerator Driver for OS/2 2.1  V1.1
------------------------------------------------

THIS VIDEO DEVICE DRIVER AND THE MAINTENANCE FIXES ARE DESIGNED TO BE USED
WITH THE OS/2 2.1 PRODUCT.  YOU MUST BE A CURRENT LICENSEE OF OS/2 2.1 IN
ORDER TO USE THIS PRODUCT.  THIS CODE IS GOVERNED BY THE TERMS AND CONDITIONS
OF THE OS/2 PROGRAM LICENSE AGREEMENT.

This package contains an OS/2 2.1 video accelerator driver supporting the
miro cards CRYSTAL 10SD and CRYSTAL 20SD.

This package also contains:

o This README with instructions for installing the driver from a diskette or
  using the Configuration Installation Distribution (CID) environment.
o Maintenance updates to OS/2 2.1 required for the successful operation  of
  the driver.


INSTALLATION INSTRUCTIONS
-------------------------

	NOTES:

	 1.  You must have OS/2 DOS Support installed in order to
	     install this driver.

	 2.  The OS/2 ATTRIB command is used during installation.  If you
	     elected not to install the OS/2 System Utility Programs or you
	     have deleted the ATTRIB, command you must use Selective Install to
	     restore the ATTRIB command before continuing.

	 3.  If you previously installed SVGA support, return to VGA resolution
	     using the new SETVGA procedure found at the end of this README
	     before you install this driver.

     4.  Label the miro OS/2 disk 1/2 as follows: miro_OS2_1
         Label the miro OS/2 disk 2/2 as follows: S3 DRVS


INSTALLATION FROM DISKETTE
--------------------------

This video accelerator driver is compatible with OS/2 2.1.
Do not install it on previous versions of OS/2.

To install this miro video accelerator driver from diskette:

    1.	Place this diskette into drive A (or any other diskette drive).

    2.	Open an OS/2 full-screen or OS/2 window session.

    3.	At the OS/2 command prompt, type the following command:

        A:S3INST A: C:

        where:  A: is the diskette drive
                C: is the drive where OS/2 2.1 is installed

        This command will copy all necessary files to the OS/2 drive.

    4.	Remove the diskette from the diskette drive, perform a shutdown, and
        then restart the system.

    5.	Open the "OS/2 System" folder.

    6.	Open the "System Setup" folder.

    7.	Open the "Display Driver Install" (DSPINSTL) object.
        When the Display Driver Install window appears, "S3" should be the
        default choice.  Select "OK".

    8.  When the source directory pop-up window appears, insert the S3
        OS/2 display driver diskette and select Install.

        DSPINSTL determines the hardware configuration by creating the
        SVGADATA.PMI file on the drive where the OS2 directory is located.
        If the SVGADATA.PMI file has not been created, the adapter will not
        be supported.

    9.  When the installation is complete, do the following:
        a.  Open "OS/2 System".
        b.  Open "System Setup".
        c.  Open the "System" object.  The Screen page of the Settings
            notebook lists all the supported resolutions for your
            configuration.
        d.  Select a resolution; then, close the notebook.

    10. Open a DOS box full screen session and start
         <Bootdrive>:\os2\wininst\install <Bootdrive>:

    11. Follow the Win/OS2 install procedure.

    12. Close the Win/OS2 session.

    13. Perform a shutdown; then, restart the system.

Note that during the installation of this driver a DISPLAY.LOG file is
created in the OS2\INSTALL directory.  This file identifies the OS/2 2.1
system files that were updated and indicates whether the installation
was successful.


COMPATIBILITY
-------------

This video accelerator driver is compatible with OS/2 2.1.
Do not install it on previous versions of OS/2.


NEW SETVGA PROCEDURE
--------------------

Use the following procedure instead of the SETVGA command to return to
VGA mode.

	NOTE:  If your display is out of sync, start OS/2 using the OS/2
	       Installation Diskette, insert Diskette 1 when prompted, then
	       press Esc to access a command prompt.  Follow the instructions
	       below to reset your display mode.

o  If you installed OS/2 from diskettes:

     1.  Be sure RSPDSPI.EXE is in the \OS2\INSTALL directory.	If it is, go
         to step 2.  If it is not, insert Installation Diskette 8 and unpack
         RSPDSPI.EXE with the following command:

         C:\OS2\UNPACK A:\INSTAID C: /N:RSPDSPI.EXE

	     where:  A: is the drive containing Installation Diskette 8
                 C: is the drive where OS/2 2.1 is installed

     2.  Type C:; then press Enter
     3.  Type CD C:\OS2\INSTALL; then press Enter
     4.  Type RSPDSPI /PK:VGA /SK:NONE /S:A:\ /T:C:; then press Enter

	     /T:C: where C: is the drive where OS/2 2.1 is installed
         /S:A: where A: is the diskette drive you use to install OS/2

o  If you installed OS/2 from CD-ROM or a LAN:

     1.  Be sure RSPDSPI.EXE is in the \OS2\INSTALL directory.	If it is, go
         to step 2.  If it is not, unpack RSPDSPI.EXE with the following
         command:

         C:\OS2\UNPACK E:\DISK_8\INSTAID C: /N:RSPDSPI.EXE

	     where:  C: is the drive where OS/2 2.1 is installed
                 E: is the CD-ROM or LAN drive

     2.  Type C:; then press Enter
     3.  Type CD C:\OS2\INSTALL; then press Enter
     4.  Type RSPDSPI /PK:VGA /SK:NONE /S:E:\OS2SE21\ /T:C:; then press Enter

	     /T:C: where C: is the drive where OS/2 2.1 is installed
	     /S:E: where E: is the CD-ROM or LAN drive


RESOLUTIONS AND TIMINGS
-----------------------

Available screen resolutions and refresh rates (H [kHz] / V [Hz])
for miroCRYSTAL cards with 1 MB DRAM.

   Resolution           10SD         20SD/1MB
-----------------   ------------   ------------
 640 *  480 * 16M   37.9 / 72.7    37.9 / 72.7
 640 *  480 * 64K   38.0 / 73.0    31.8 / 60.4
 640 *  480 * 256   37.9 / 72.7    31.5 / 59.9
 800 *  600 * 256   48.2 / 72.4    35.4 / 56.0
1024 *  768 * 256   56.4 / 69.9    35.5 / 87.0i

Available screen resolutions and refresh rates (H [kHz] / V [Hz])
for miroCRYSTAL cards with 2 MB DRAM.

   Resolution        20SD Rev.1     20SD Rev.2     20SD Rev.3
-----------------   ------------   ------------   ------------
 640 *  480 * 64K   37.5 / 75.0    31.5 / 60.0    31.8 / 60.4
 800 *  600 * 64K   46.8 / 75.2    46.0 / 75.0    46.0 / 75.0
1024 *  768 * 64K   56.5 / 70.0    60.0 / 75.0    60.0 / 75.0
 640 *  480 * 256   37.5 / 75.0    31.5 / 60.0    31.5 / 59.9
 800 *  600 * 256   46.6 / 74.9    35.5 / 56.0    35.4 / 56.0
1024 *  768 * 256   56.5 / 70.0    35.5 / 87.0i   35.5 / 87.0i
1152 *  864 * 256   55.0 / 59.5    54.0 / 60.0    55.0 / 60.0
1280 * 1024 * 256   47.6 / 88.6i   48.0 / 88.5i   47.6 / 88.6i

i = interlaced


