  ͻ
                                                                           
                ISA Bus: IBM PC and XT Switch Setting Tables               
                                                                           
  ͼ

IBM PC-2 SWITCH SETTINGS

                    IBM PC       Switch Settings

           SWITCH BLOCK 1                      SWITCH BLOCK 2
         ͻ                 ͻ
                                            
          1 2 3 4 5 6 7 8                   1 2 3 4 5 6 7 8 
         ͼ                 ͼ
        Ĵ                      Ŀ
      Ŀ     Ŀ                               
       Yes                       Ŀ  Always Off
      Ĵ                     640k 
       No     Ŀ       Ĵ
      ٳ Mono           608k 
  Ŀ iMCP  Ĵ       Ĵ
   Yes         80 X 25        576k 
  Ĵ Ĵ       Ĵ
   No          40 X 25        544k 
  ٳ       Ĵ       ĴTotal memory
   Floppy           EGA           512k  for PC2
   Disk           ٳ       Ĵ
   Ŀ      Monitor             480k  All off for
    16k        Type               Ĵ PC1
   Ĵ                          448k 
    32k                     Ĵ
   Ĵ      Ŀ       416k 
    48k         1 Drive      Ĵ
   Ĵ      Ĵ       384k 
    64k         2 Drive      Ĵ
                352k 
                      # of Floppys       Ĵ
    System Board                          320k 
    Memory for PC1                       Ĵ
    Off for PC2                           288k 
                                         Ĵ
                                          256k 
                                         Ĵ
                                          192k 
                                         Ĵ
                                          128k 
                                         Ĵ
                                           64k 
                                         

IBM XT SWITCH SETTINGS

                       IBM XT   Switch Settings

           SWITCH BLOCK 1
         ͻ
                  
          1 2 3 4 5 6 7 8 
         ͼ
           
                    Ŀ
                 Ŀ             
              Ŀ                         
   Ŀ      Ŀ  Ŀ   Ŀ
                   Mono     1 Drv
         Ĵ  Ĵ   Ĵ
    Always       128k  80 X25   2 Drv
    Off         Ĵ  Ĵ   
       Ŀ  192k  40 X25    # of
        Yes  Ĵ  Ĵ    Floppy
       Ĵ  256k  None-     Drives
        No       EGA   
         System      
        iMCP      Memory       Display
                               Type



End of file                 Intel FaxBack # 1004          December 2,1992
