H133506 - Video Corruption in Windows 3.11 on PC 340 6560                    
                                                                                
                                                                                
                                                                                
 SYMPTOM:                                                                       
 IBM PC 340 Series 6560 systems preloaded with Microsoft Windows                
 3.11 may exhibit video corruption when viewing text files such                 
 as the Windows Readme File or when opening and closing windows.                
                                                                                
 PROBLEM ISOLATION AIDS:                                                        
 The corruption occurs if the video resolution of the Windows                   
 Cirrus video drivers is set for 1152 x 864 HC (64) @ 75Hz or                   
 640 x 480 x TC (24bit or 16M colors) @ 85Hz.                                   
                                                                                
 The video corruption of text files viewed in Windows will                      
 consist of unreadable characters and blinking lines.                           
                                                                                
 The video corruption when opening or closing windows will                      
 display as a double shadow of the window off to the right side                 
 of the primary image.                                                          
                                                                                
 FIX:                                                                           
 To eliminate this failure, choose a different resolution other                 
 than the two listed above or set the video resolution of the                   
 Windows Cirrus video drivers to a resolution with a maximum                    
 refresh rate of 75Hz at any color depth.                                       
                                                                                
 A Flash BIOS update for the PC 340 6560 is being developed to                  
 eliminate the failure from occurring in either of the                          
 resolutions listed above.  This update should be available                     
 during 8/96 from the IBM PC Company BBS at 919-517-0001.