IBM Aptiva M71
(250-0444)      Video Interface / Video Memory        Faxback Doc. # 17875

Video Interface

Your system board comes with two external video memory module  
sockets (Socket 1 and Socket 2).  You can upgrade the video
memory to a maximum of 2 MB.  To upgrade video memory, you
MUST INSTALL TWO VIDEO MEMORY MODULES.  You cannot install a
video memory module in one socket and leave the other socket
empty.

NOTE:       Each Memory Module you install must have these   
            specifications: 40-pin, surface mount package    
            (SOJ), 256K x 16, 70 nsec, dual CAS DRAM         
            The IBM part number is 92G7443.                  
                                                              
NOTE:       Before you turn your computer off, you must set  
            the video resolution to 640x480x16 (VGA) in OS/2 
            Warp.                                            

Installing Video Memory

To upgrade video memory, follow these steps:

1.  One end of the video memory module will have a dot, notch,
    bevel or any combination.  Locate the dot, notch or bevel 
    on the video memory module.

2.  The socket of the video memory location has one corner of
    the socket angled.  This angled corner is equivalent to
    Pin 1 or the end that is notched, or dotted. Position the
    end of the memory module that has the dot, notch or bevel
    to coincide with the angled corner of the socket.
    
3.  Align the rounded pins on the sides of the memory module  
    with the grooves in the memory module socket. 
    
4.  Press straight down firmly on the module to insert it into
    the socket.  A properly inserted module will sit completely
    inside the socket.
    
5.  Reinstall any hardware removed to access the video memory
    module sockets. 

NOTE:       When you have finished installing additional     
            video memory modules, you must re-install the    
            video drivers in OS/2 Warp.                      

Reinstalling Video Drivers in OS/2 Warp

You must reinstall the video drivers when you install additional video
memory.  To reinstall the video drivers in OS/2 Warp, follow these
steps:

1.  Double-click on the OS/2 System icon on the OS/2 Desktop.


2.  In the "OS/2 System" window, double-click on the  Command Prompts icon.

3.  Double-click on the OS/2 Window icon. 

4.  At the C:\ prompt, type:

    CD TRIDENT.OS2 
    
    and press <enter>.
    
5.  Type:

    INSTALL 
    
    and press <enter>.  The "Trident Display Drivers Installation"
    window appears.  

NOTE:       The "Trident Display Drivers Installation" note- 
            book automatically opens to the Screen section.  
            If you accidentally open another section, just   
            click on the SCREEN tab to get back to the       
            correct page.                                    

6.  In the "Screen resolution" box, click on one combination of screen
    width, screen height, and number of colors (for example, 640x480x256).

7.  Click on the tab marked "Refresh".  The Vertical Refresh rates 
    will be displayed.

8.  Click on the down arrow in the Vertical Refresh Rate box for the
    resolution you will use.  When you see the list of refresh  rates,
    click on the one you will use.  Click on INSTALL.

9.  When the "Trident Display Installation" window with the message
    "Installation has been completed..." appears, click on OK.

10.  When the C:\ prompt reappears, type:

     EXIT

     and press <enter>.

11.  Shut down OS/2 Warp and reboot (restart) your computer. 

Video Adapter Cards

When you install a video adapter card, you do not need to reset (move)
jumpers on the system board.   The builtin video controller will be
disabled automatically.  However, you may need to set jumpers on the
video adapter card.


(CSC/all-09/14/95)

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