UNIDENTIFED

8900 VGA MASTER (FOUR LAYER)

Card Type                   Video card
Video Chip Set              Unidentified
Maximum Video Memory        8MB DRAM
Video Types Supported       MGA, CGA, EGA, VGA
Highest Resolution          1024 x 768
Supported
Data Bus                    16-bit ISA

[Image]

                                CONNECTIONS

          Function            Label            Function             Label

  15-pin analog video port    CN1     Feature connector             CN2

                        USER CONFIGURABLE SETTINGS

              Function                   Label            Position

      DRAM clock at 40 MHz (2 DRAM)       JP1         Pins 2 & 3 closed

      DRAM clock at 48 MHz (4/8           JP1         Pins 1 & 2 closed
      DRAM)

  »   Factory configured - do not        SW1/1               On
      alter

  »   Factory configured - do not        SW1/2               On
      alter

  »   Less than 48KHz scan rate          SW1/3               On

      48-49KHz scan rate                 SW1/3               Off

  »   Factory configured - do not        SW1/4               On
      alter

  »   Fast address decode                SW1/5               Off

      Slow address decode                SW1/5               On

  »   16 bit data path                   SW1/6               Off

      8 bit data path                    SW1/6               On

                         DRAM JUMPER CONFIGURATION

   Size        JP3         JJ1/A        JJ1/B       JJ1/C        JJ1/D

    2MB      Pins 1 &    Pins 1 & 2   Pins 1 & 2  Pins 1 & 2   Pins 1 & 2
             2, 4 & 5

    4MB      Pins 1 &    Pins 1 & 2   Pins 1 & 2  Pins 1 & 2   Pins 1 & 2
             4, 2 & 5

    8MB      Pins 2 &    Pins 2 & 3   Pins 2 & 3  Pins 2 & 3   Pins 2 & 3
             3, 5 & 6

  Note: Pins indentified are in the closed position

                         DRAM JUMPER CONFIGURATION

   Size       JJ1/E        JJ1/F        JJ1/G       JJ1/H        JJ1/I

   2MB       Pins 1 &     Pins 1 &     Pins 1 &    Pins 1 &    Pins 1 & 2
             2, 4 & 5        2            2           2

   4MB       Pins 1 &     Pins 1 &     Pins 1 &    Pins 1 &    Pins 1 & 2
             4, 2 & 5        2            2           2

   8MB       Pins 2 &     Pins 2 &     Pins 2 &    Pins 2 &    Pins 2 & 3
             3, 5 & 6        3            3           3

  Note: Pins indentified are in the closed position

                            BUS SIZE SELECTION

             Setting                                JP4

  »           Autodetect                     Pins 2 & 3 closed

          Standard interface                 Pins 1 & 2 closed

                          IRQ INTERRUPT SELECTION

            Setting                                 J2

  »         IRQ9 disabled                    Pins 2 & 3 closed

            IRQ9 enabled                     Pins 1 & 2 closed