EVEREX SYSTEMS, INC.

MICROENHANCER EV-653

Category                  Video
Video Types Supported     EGA/Monochrome
Video Processor           Unidentified
Highest Resolution        640 x 350
Supported
Data Bus Type             8-bit ISA
Memory Type               DRAM
Maximum Onboard Memory    256KB (Exact location of memory is unidentified)

[Image]

                                CONNECTIONS

       Purpose          Location            Purpose            Location

  15-pin analog            CN1        Light pen connector         J2
  video port

                      I/O PORT ADDRESS CONFIGURATION

               Address                                 W3

  »                3xx                         Pins 1 & 2 closed

                   2xx                         Pins 2 & 3 closed

                          SLOT LOCATION SELECTION

                 Setting                                 W5

  »    Card is not installed in slot 8                 Closed

         Card is installed in slot 8                    Open

                         VIDEO INTERRUPT SELECTION

        IRQ                W6                W7                 W8

  »       NMI            Closed            Closed              N/A

           2              Open              Open               N/A

           3              Open             Closed           Pins 1 & 2
                                                              closed

           5              Open             Closed           Pins 2 & 3
                                                              closed

                          MONITOR TYPE SELECTION

       Type             W2         SW1/1     SW1/2      SW1/3     SW1/4

   Enhanced 80 x    Pins 2 & 3      Off        On        On        Off
        25            closed

  Enhanced color    Pins 2 & 3      On         On        On        Off
     80 x 25          closed

  Color 80 x 25     Pins 1 & 2      Off       Off        Off        On
                      closed

  Color 40 x 24     Pins 1 & 2      On        Off        Off        On
                      closed

    Monochrome      Pins 1 & 2      Off       Off        On        Off
                      closed

                        DUAL MONITOR CONFIGURATION

  Primary (Micro      Secondary       SW1/1     SW1/2    SW1/3     SW1/4
    Enhanced)

   Enhanced 80 x      Monochrome       Off       On        On       Off
        25

  Enhanced color      Monochrome        On       On        On       Off
     80 x 25

  Color 80 x 25       Monochrome       Off       Off      Off       On

  Color 40 x 24       Monochrome        On       Off      Off       On

    Monochrome      Color 80 x 25      Off       Off       On       Off

    Monochrome      Color 40 x 24       On       Off       On       Off

                        DUAL MONITOR CONFIGURATION

     Primary          Secondary       SW1/1    SW1/2     SW1/3     SW1/4
                        (Micro
                      Enhanced)

    Monochrome      Enhanced 80 x      Off      Off       On        On
                         25

    Monochrome      Enhanced color     On       Off       On        On
                       80 x 25

    Monochrome      Color 80 x 25      Off       On       On        On

    Monochrome      Color 40 x 24      On        On       On        On

  Color 80 x 25      Monochrome        Off       On       Off       On

  Color 40 x 24      Monochrome        On        On       Off       On

    FACTORY CONFIGURED - DO NOT ALTER

       Jumper              Position

         W1                  Open

         W4           Pins 1 & 2 closed