Graphics Adapter  (250-3045)     Specifications        Faxback Doc. # 2080
Dual Display  


VIDEO CONTROLLER: 6845 CRT                  GRAPHICS MODES:
                  controller chip           IBM-Compatible: 320 x 200 pixels,
ALPHANUMERIC MODES                                          4 colors
                                                            640 x 200 pixels,
    SCREEN SIZES:  40 x 25 char.                            black/white
                   80 x 25 char.            Plantronics
                  132 x 25 char.                Compatible: 320 x 200 pixels,
                  132 x 44 char.                            16 colors
      ATTRIBUTES: 16 colors, normal,                        640 x 200 pixels,
                  reverse video,blinking,                   4 colors
                  highlighting, underline   Hercules
FAST FLICKER                                    Compatible: 720 x 348 pixels,
  FREE SCROLLING: (Except in 132                            monochrome
                  column text mode)          DDGA Graphics: 640 x 200 pixels,
    SYNC SIGNALS: separate horizontal                       16 colors
                  and vertical sync          VIDEO DISPLAY
                  in TTL levels                     BUFFER: 64k bytes of video
      Horizontal: 15.75 kHz for                             memory
                  RGB monitor        Monochrome Text Modes: B0000 to B3FFF
                  18.432 kHz for     Color/Emulation Modes: B8000 to BFFFF
                  TTL monochrome       Monochrome Graphics: B0000 to BFFFF
                  monitor          640 x 200 16 Color Mode: B0000 to BFFFF
        Vertical: 60 Hz for RGB                 CONNECTORS:
                  monitor                     Direct Drive: 9 pin D shell (F)
                  50 Hz for TTL                             IBM standard
                  monochrome               Composite Video: 9 pin D through
                  monitor                                   adapter