Assembly Language Help (alang.hlp) (Table of Contents; Topic list)
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Int 10h Function 1Ah
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     The display codes are interpreted as follows:
 
     Code        Video Subsystem Type
 
     00h         No display
     01h         MDA with 5151 monitor
     02h         CGA with 5153 or 5154 monitor
     03h         Reserved
     04h         EGA with 5153 or 5154 monitor
     05h         EGA with 5151 monitor
     06h         PGA with 5175 monitor
     07h         VGA with analog monochrome monitor
     08h         VGA with analog color monitor
     09h         Reserved
     0Ah         MCGA with digital color monitor
     0Bh         MCGA with analog monochrome monitor
     0Ch         MCGA with analog color monitor
     0Dh-FEh     Reserved
     FFh         Unknown
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