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  1.  
  2. VideoID v/1.3: written by Bob Berry, Canyon State Systems -> Public Domain  
  3. Step/function______ method__________________ ah al bh bl ch cl dh dl  result
  4. 1. Look for VGA     video int ax=1A00h       1A 1A 00 08 00 00 00 00  FOUND 
  5. 2. Look for EGA     video int ah=12h bl=10h                           skip  
  6. 3. Look for CGA     find 6845 CRTC at 3D4h                            skip  
  7. 4. Look for MDA     find 6845 CRTC at 3B4h                            skip  
  8. 5. Look for HERC    check MDA status bit 7                            skip  
  9. 6. Identify active  single display is active                          skip  
  10.        Active Video=VGA adapter, PS/2 color monitor.                        
  11.      Inactive Video=(none).                                                 
  12. 7. Peek at EGA/VGA video RAM at C000:0000                                   
  13.   |U.0..740010/13/89-14:00:00....IBM COMPATIBLE.........003145-104COPYRIGHT|
  14.   | WESTERN DIGITAL INC. 1987,1989, ALL RIGHTS RESERVED.VGA=E...8(-........|
  15.   |.....qPZ.............8(-...dp........aPR...............=..u......U3.....|
  16. 8. Identify VGA (and video memory, if possible).                            
  17.      IBM 8514/a............no          Hercules Graphics Station..no        
  18.      Ahead Systems type A..no          Ahead Systems type B.......no        
  19.      Tseng 3000............no          Tseng 4000.................no        
  20.      Everex................no          Trident....................no        
  21.      ATI...................no          Video7.....................no        
  22.      Paradise..............FOUND 512k  Chips & Technologies.......no        
  23.      Oak Technologies......no                                               
  24.