HOW MUCH MEMORY IS ON A GT1 ADAPTER?

ITEM: RTA000025883



QUESTION:                                                                       
                                                                                
I have some questions concerning VRAM and the GT1 Graphics Adapter for          
the RS/6000 Model 220. Specifically I would like to know how to                 
figure out how much VRAM memory (upgrade kits) are in a GT1 adapter on          
a 220. I have read item BQWFL.  I now understand how to see how many            
upgrade kits are installed on a GT1 adapter.  Could you expand on this          
and tell me how to figure out the size of each of the upgrade kits              
installed?  Are there only 512-k kits or are there 1-MB kits also?              
If so, how do I figure out the total amount of memory (not just kits)?          
                                                                                
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A: The "Setup and Operator Guide" for the 7011 (Model 220) shows on             
about page 2-34 that the VRAM sizes are 256 kilobytes, 768                     
Kilobytes, and 1.3 megabytes.  So, each upgrade adds 512 kilobytes              
of VRAM.                                                                        
                                                                                
                                                                                
Item BQWFL included for reference:                                              
                                                                                
QUESTION:                                                                       
Is there a way to check via SMIT to see how much memory is on a                 
GT1 graphics adapter??                                                          
                                                                                
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A: If you wish to see how much memory is on the Gt1 graphics adapter,           
   you can use the command, 'smit lsattr'.  You will then need to choose        
   "Show Characteristics of a Defined Device" and then select the entry         
   "sga0" (the definition name of the Gt1 graphics adapter).  There is         
   a field, "Fairness and Nibble mode enable mask" which will tell you          
   the number of VRAM simms on the Gt1.  The valid numbers are:                 
                                                                                
      2 - 1 bit per pixel  (no upgrade kits installed)                          
      6 - 4 bits per pixel (one upgrade installed)                              
     10 - 8 bits per pixel (two upgrades install)                               
                                                                                
   You can also see how many VRAM simms that the Gt1 has via ODM.  You          
   would type 'odme CuAt' and choose "Retrieve/Edit" and then search for        
   the entry "sga0".  The field to the right of the first sga0 entry says       
   "curr_nbr_sims" and the field to the right of this field corresponds         
   to the number of VRAM simms on the Gt1.                                      
                                                                                
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This item was created from library item Q602016      BQZZX                      
                                                                                
S e a r c h - k e y w o r d s:                                                  
ADAPTER BQZZX FIGURE GRAPHICS GT1 HARDWARE INSTALL INSTALLED IX KITS            
MAIN MEMORY NON OCT92 OZNEW RISCOHW RISCSYSTEM STORAGE UPGRADE                  
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                               


WWQA: ITEM: RTA000025883 ITEM: RTA000025883
Dated: 08/1998 Category: RISCOHW
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