@MAJOR TITLE = HELP GUIDE         

         BACKGROUND
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         The Digital Tours Access System (software interface) employs 
         SOSVIEW.EXE as the graphic file viewer. Even though 
         SOSVIEW.EXE has a reputation for being easy to use and 
         trouble-free,  occasionally you may experience difficulties.  
         This error list reference is provided to assist you in 
         diagnosis of many possible problems and their solutions. 

         START UP 
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         Selecting Video Drivers Using PICKDRVR.EXE 

         Video drivers for the correct video card MUST be installed to 
         operate the program correctly.  For convenience, use 
         PICKDRVR.EXE to install the drivers from a menu-driven 
         utility. If a driver is listed which directly supports your 
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         video card, select that driver from the PICKDRVR.EXE list. If 
         no direct support video driver is listed and your video card 
         is VESA compatible, select the VESA driver from the 
         PICKDRVR.EXE list.  If you are uncertain which video card is 
         present in your computer, consult your system manual, or 
         package of manuals which you received with your computer. 

         < SPECIAL NOTE > Most newer video cards are now VESA Compatible 
         SVGA. Many of these cards are BIOS compatible, which means 
         that the cards can autodetect (recognize) VESA compatible 
         "calls" without any additional user modifications. Some older 
         cards may require loading an additional software driver to 
         force the video card into VESA mode. These software drivers 
         and the necessary instructions should be found with the 
         manual and disk which came with your video card or computer. 




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         TROUBLE SHOOTING <>  Common Error Messages and What They Mean 
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         ERROR:    CANNOT FIND GRAPHIC MODE FOR THIS IMAGE 

         A. Video drivers for the correct video card MUST be installed 
         to operate the program correctly.  For convenience, use 
         PICKDRVR.EXE to install the drivers from a menu-driven 
         utility. 

         B. Video card may not have enough video RAM.  Most of the 
         useful SVGA video modes require at least 512K video RAM. 

         Note: 512k video RAM required to view images 640x480x256 
               1 Mb video RAM required to view images 1024x768x256 
 



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         ERROR:    (No error message will report) 

         If you are using a DOS shell such as Windows, XTREE, 
         1DIRPLUS, or DesqView, you may want to leave the shell and 
         return to DOS.  SOSVIEW routines are well behaved, but, any 
         co-existing shell or TSR usage runs the risks of excessive 
         memory allocation or internal contention that could lock up 
         the PC. SOSVIEW routines do direct screen writes which may 
         cause contention with ill-behaved TSRs.  When SOSVIEW 
         routines give you error messages relating to OUT OF MEMORY or 
         inability to allocate memory for buffers, the shell or 
         terminate-and-stay-resident utilities are hogging precious 
         RAM and preventing from correct operation.  Well-known ill-
         behaved TSRs like SIDEKICK are definitely at risk for 
         crashing when attempting to co-exist with database 
         applications. Microsoft WINDOWS 2.11 or older will NOT work 
         with SOSVIEW routines.  All versions of DESQview, including 
         DV/X are known to not correctly restore or refresh SuperVGA 
         graphic mode screens upon returning to a graphic process 
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         (after swapping to another process).  This is a DESQview 
         problem and occurs even with DESQview-specific or DESQview-
         aware programs running in SVGA graphics modes.  Unless your 
         graphic mode application can refresh its own graphics screen, 
         there is no currently known solution.  The graphic mode 
         process works correctly except for this problem and only when 
         swapped out.  It does not crash.  Quarterdeck Systems is 
         working on this problem. 

         ERROR:    (No error message will report) 

         MONITORS: 800x600 at higher require analog, multisync/or 
         analog fixed frequency Monitors that support the desired 
         video modes.  Incorrect display, rolling of picture, jumbled 
         image, distortion and severe monitor damage may result from 
         over-driving monitor.  Even though monitor may appear to 
         support the desired modes, some video cards can easily over 
         drive inexpensive monitors, even those claiming to support 
         the desired modes, because they are high performance and 
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         require greater bandwidth than monitor can support (C&T 453 
         chipsets, etc)  Some SVGA cards have dip-switches or jumpers 
         to "throttle back" or reduce the bandwidth to fit 
         capabilities of inexpensive monitors.  This is a different 
         parameter than the 8-bit/16-bit mode of operation jumpers. 

         Video Cards NOT currently supported: 

         SIERRA High Color (32,768 palette 16-bit)                    
         8514A with video pass-through to Vesa connector              
             (where 2 boards are installed - separate non-IBM 8514 and
             regular SVGA using ribbon cable to Vesa pass-through     
             connector on SVGA card)                                  
         Texas Instruments 34010/34020/34040                          
         HERCULES Graphic Station                                     
         S3 Graphic Accelerator chipset                               
         Weitek W5086 Graphic Controller                              
         Other Graphic Accelerators or Coprocessors                   
         
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         Video Cards Currently Supported 

         AST - (Paradise chipset, see Paradise notes, above)            
         ATI Wonder (ATI chipset)                                       
         ATI VGA Wonder (ATI chipset)                                   
             No ATI High Color support                                  
         ATI Elite (Trident chipset)                                    
         CEG (see Edsun)                                                
         CHIPS & TECHNOLOGY 453 Chipset 1Mg, 512K 1024x768              
         CHIPS & TECHNOLOGY 452 Chipset, 512K, 640x480/800x600          
                       Even though 452 has 512K, it only supports       
                       640x480x256                                      
         CIRRUS LOGIC                                                   
         COMPAQ, 512K, 256K (using Paradise chipset)                    
         DEFINICON ET-4000, 1Mg, 512K, 256K                             
         DELL (using Paradise chipset) Older                            
         DELL (using WDC chipset) Newer, 1024x768x 256, 800x600x256!!   
         DIAMOND SpeedStar ET-4000, 1 Meg, 512K, 256K                   
         
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         EDSUN Laboratories CEG/DAC Continuous Edge Graphics            
             In conjunction with 1 Meg SVGA TSENG                       
             ET-4000, C&T 452/453, TRIDENT 8900,                        
             PARADISE 1024, etc Chipsets.                               
         EVEREX (Everex chipset) 512K video RAM                         
         FORTUNER (Trident 8800) 512K video RAM                         
         GENOA (Genoa chipset) 512K memory, Requires Sigma driver       
                       NOT generic Tseng ET-3000                        
         GENOA - 1 Meg (not supported unless it has ET-4000 installed)  
         GRABERT Autopack Apogee ET-4000, 1Mg, 512K, CEG and SVGA       
         GROUNDHOG Graphics SHADOW, ET-4000, 1Mg, 512K, 256K            
         HEADLANDS Technology (see VIDEO Seven up to 512K only)         
         HERCULES Monochrome Graphics, 720x348x2                        
         IBM XGA 1024x768x256, 640x480x256 (16 color modes supported    
             but XGA requires 1 Meg video memory to display             
             1024x768 AND 640x480!!                                     
                            
                            
                            
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         IBM 8514/A Genuine IBM 8514/A only                             
         IMTEC (Trident 8800) 512K video RAM                            
         JATON (Trident 8800) 512K video RAM                            
         LOGIX (Trident 8800) 512K video RAM                            
         MAXXON )Trident 8800) 512K video RAM                           
         MILLENIUM Spectrum ET-4000, 1Mg video RAM, BIOS extensions to  
         1280x1024x16                                                   
         MONOLITHIC Systems UltraVGA 452 - 512K, 640x480 CEG and SVGA   
         MONOLITHIC Systems UltraVGA 453 - 1 Meg, 1024x768 CEG and SVGA 
         NCR 77C22 Chipset 4 Meg, 2 Meg, 1 Meg, 1024x768x256            
                       NOTE: BIOS extension to 1280x1024 is claimed     
                       by manufacturer but not implemented at this date)
         OAK TECHNOLOGY Chipset  512K video RAM                         
         ORCHID ProDesigner, Tseng ET-3000, 512K, 256K                  
         ORCHID ProDesigner II, Tseng ET-4000, 1Mg, 512K, 256K          
         PARADISE, 512K, 256K 800x600x16, 640x480x256                         
                  (see Paradise note above)                                   
         PRISM X-VGA 1 Meg, Tseng ET-4000, BIOS extensions to 1280x1024x16    

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         SIGMA, Tseng ET-3000, 512K video RAM, Requires Sigma driver          
                  NOT generic Tseng ET-3000                              
         SIGMA Legend, Tseng ET-4000, 1 Meg, 512K, 256K                       
         SMART VGA (Trident 8800) 512K video RAM                              
         SpeedStar (see DIAMOND) Tseng ET-4000 Chipset, 1Mg, 512K, 256K       
         1024x768x256                                                         
         SpeedStar Plus (see DIAMOND) Tseng ET-4000 Chipset, 1Mg, 512K, 256K  
                       (short card) 1024x768x256                              
         STB, Tseng ET-3000, 512K, 256K, Requires STB driver NOT              
                       generic Tseng ET-3000                                  
         STB, Tseng ET-4000, 1Mg, 512K, 256K 1024x768x256 
                       Requires STB4 driver NOT generic Tseng ET-4000 
         TECMAR 512K video RAM                                                
         TRIDENT IMPACT 8900 Chipset, 1Mg, 512K, 256K                         
         TRIDENT TVGA 8900 (8916-8) Chipset, 1Mg, 512K, 256K                  
         TRIDENT generic 8900 Chipset, 1Mg, 512K, 256K                        
         TRIDENT generic 8800 Chipset, 512K, 256K                             
         TSENG LABS generic ET-3000 Chipset, 512K, 256K                       
         TSENG LABS generic ET-4000 Chipset, 1Mg, 512K, 256K                  
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         VEGA (see VIDEO Seven, older cards may not include              
                  complete video modes)                                  
         VESA Compatible SVGA Cards, 1Mg, 512K, 256K, See Vesa Note:     
             (Older cards may require TSR, Newer cards are               
             BIOS compatible, Some manufacturers may not have all modes  
             implemented, may be slower than board specific driver.      
             640x400x256                                                 
             640x480x256                                                 
             800x600x16 and 800x600x256                                  
             1024x768x16 and 1024x768x256                                
             1280x1024x16 and 1280x768x256                               
             Note: VESA High Color modes are not supported by SOSVIEW.EXE
         VGA TWEAK MODES Non-standard modes using SOSVIEW.EXE:              
             Does not require SVGA, will work with an IBM compatible        
             standard VGA: 320x400x256 & 360x480x256, 720x540x16, 800x600x16
             (800x600 requires multisync analog monitor)                    
         VIEWPOINT by Everex (non-standard Trident 8800)512K video RAM      
         VIEWSONIC PerfectView ET-4000, 1 Meg. 1024x768                     
         VIDEO SEVEN Chipset, 512K, 256K                                    
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         WESTERN DIGITAL Paradise Chipset, 1Mg, 512K                        
         XEDAC ET-4000, 1Mg video RAM, CEG and SVGA to 1024x768             
         XGA, IBM                                                           
         ZYMOS 512K video RAM                                               
                                                                   


         SOSVIEW.EXE (c) 1993 $ave On $oftware. All Rights Reserved.
         Video Drivers (c) 1992 Sun Country. All Rights Reserved.   









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