EVEREX SYSTEMS, INC.

MICRO ENHANCER EV-657B (VER.1.0)

Card Type                   Video card
Video Chip Set              Unidentified
Highest Resolution          720 x 348
Supported
Maximum Video Memory        256 KB
Data Bus                    8-bit ISA
Video Types Supported       EGA

[Image]

                                CONNECTIONS

          Function            Label            Function             Label

  RCA jack                     J1     9-pin digital video port       J3

  RCA jack                     J2     Feature connector              J4

                        USER CONFIGURABLE SETTINGS

                   Function                     Label        Position

  »   Factory configured - do not alter           W1         Pins 2 & 3
                                                              closed

  »   I/O port address selected at 3XX            W3         Pins 2 & 3
                                                              closed

      I/O port address selected at 2XX            W3         Pins 1 & 2
                                                              closed

  »   Factory configured - do not alter           W4            N/A

  »   Factory configured - do not alter           W7         Pins 1 & 2
                                                              closed

  »   Non-Maskable Interrupt selected (NMI)      W10         Pins 1 & 2
                                                              closed

      Interrupt request selected (IRQ)           W10         Pins 2 & 3
                                                              closed

  »   CRTC Vertical interrupt enabled           W12/G         Closed

      CRTC Vertical interrupt disabled          W12/G          Open

  »   Operation in PC-XT slot 8 disabled         W13           Open

      Operation in PC-XT slot 8 enabled          W13          Closed

  »   Emulation disabled                        SW1/5           Off

      Emulation enabled                         SW1/5           On

  »   Factory configured - do not alter         SW1/6           Off

                            INTERRUPT SELECTION

  Setting    W12/A      W12/B      W12/C     W12/D      W12/E     W12/F

     2        Open       Open      Open       Open      Open      Closed

     3       Closed      Open      Open       Open      Open       Open

     4        Open      Closed     Open       Open      Open       Open

     5        Open       Open     Closed      Open      Open       Open

     6        Open       Open      Open      Closed     Open       Open

     7        Open       Open      Open       Open     Closed      Open

                           BOOT-UP MODE SELECTION

     Monitor        Mode &     SW1/1   SW1/2   SW1/3   SW1/4   SW1/7   SW1/8
                    Format

  »   Enhanced    EGA 80x25     Off     On      On     Off      On      On

      Enhanced       Color      On      On      On     Off      On      On
                    80x25

        Color        Color      Off     Off     Off     On      On     Off
                    80x25

        Color        Color      On      Off     Off     On      On     Off
                    40x25

      Monochrome  Monochrome    Off     Off     On     Off     Off     Off