
EVEREX SYSTEMS, INC.

MICRO ENHANCER DELUXE EV-657 (VER.2.0)

Card Type                  Parallel card, Video card
Video Chip Set             Everex Systems
Highest Resolution         720 x 348
Supported
Maximum Video Memory       256KB DRAM (location unidentified)
Data Bus                   8-bit ISA
Video Types Supported      EGA

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  Analog video port             J1     Parallel port                 J2

                        USER CONFIGURABLE SETTINGS

                   Function                     Label        Position

     Factory configured - do not alter           W1         Pins 1 & 2
                                                              closed

     Non-Maskable Interrupt selected (NMI)       W2         Pins 2 & 3
                                                              closed

      Interrupt request selected (IRQ)            W2         Pins 1 & 2
                                                              closed

     I/O port address selected at 3XX            W3         Pins 1 & 2
                                                              closed

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

     IRQ7 enabled                                W6         Pins 2 & 3
                                                              closed

      IRQ5 enabled                                W6         Pins 1 & 2
                                                              closed

     Factory configured - do not alter           W7         Pins 2 & 3
                                                              closed

     Factory configured - do not alter           W8           Open

     CRTC Vertical interrupt enabled            W9/A         Closed

      CRTC Vertical interrupt disabled           W9/A          Open

     Operation in PC-XT slot 8 disabled         W10           Open

      Operation in PC-XT slot 8 enabled          W10          Closed

     Factory configured - do not alter          W11         Pins 1 & 2
                                                              closed

     Factory configured - do not alter          W12         Pins 2 & 3
                                                              closed

     Factory configured - do not alter          W13          Closed

     Emulation enabled                         SW1/5           On

      Emulation disabled                        SW1/5           Off

     Factory configured - do not alter         SW1/6           Off

                    PARALLEL PORT ADDRESS CONFIGURATION

           Address                     W4                     W5

          3BCh - 3BEh         Pins 1 & 2 closed      Pins 2 & 3 closed

           378h - 37Fh         Pins 1 & 2 closed      Pins 1 & 2 closed

           278h - 27Fh         Pins 2 & 3 closed      Pins 1 & 2 closed

            Disabled           Pins 2 & 3 closed      Pins 2 & 3 closed

                           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

                            INTERRUPT SELECTION

  Setting     W9/B       W9/C      W9/D       W9/E      W9/F       W9/G

     2       Closed      Open      Open       Open      Open       Open

     3        Open      Closed     Open       Open      Open       Open

     4        Open       Open     Closed      Open      Open       Open

     5        Open       Open      Open      Closed     Open       Open

     6        Open       Open      Open       Open     Closed      Open

     7        Open       Open      Open       Open      Open      Closed

