EVEREX SYSTEMS, INC.

TEMPO 486-25/33/50 EV-18173

Processor          80486SX/80487SX/80486DX
Processor Speed    25/33/50MHZ
Chip Set           C & T/Suntac
Max. onboard DRAM  32MB
SRAM Cache         32/64KB
BIOS               AMI
Dimensions         330mm x 218mm
I/O Options        Floppy drive interface, front panel connector, IDE
                   interface

                   parallel port, serial ports (2)
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel Port               CN1      Reset switch                J1

  Serial Port (COM1)          CN2      Speaker                     J3

  Serial Port (COM2)          CN3      Front panel connector       J10

  IDE interface               CN4      IDE interface LED           J13

  Floppy drive interface      CN5      Unknown                     J18

  Note:The location of J1 is unknown.

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not            JP1              Unknown
      alter

  »   Factory configured - do not            JP2              Unknown
      alter

  »   Factory configured - do not            JP3              Unknown
      alter

  »   Factory configured - do not            JP4              Unknown
      alter

  »   I/O bus speed select 1 wait            JP5                Open
      state

      I/O bus speed select 0 wait            JP5               Closed
      states

  »   CMOS memory normal operation           JP8              Unknown

      CMOS memory clear                     JP11              Unknown

  »   Factory configured - do not           JP11              Unknown
      alter

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                          CACHE CONFIGURATION

       Size             Cache              TAG         Dirty Bit (DB)

       32KB          (4) 8K x 8        (1) 8K x 8       (1) 16K x 1

       64KB          (4) 16K x 8       (1) 16K x 8      (1) 16K x 1

        COM1 DTE/DCE CONFIGURATION

        Mode          Jumper Block COM1

         DCE          [Image]

         DTE          [Image]

        COM2 DTE/DCE CONFIGURATION

        Mode          Jumper Block COM2

         DCE          [Image]

         DTE          [Image]

           CACHE RESISTOR CONFIGURATION

      Size             TR1              TR2

      32KB        Not Installed      Installed

      64KB          Installed      Not Installed

                    CPU TYPE CONFIGURATION

        TYPE                 JP7                  JP9

       80486SX         Pins 2 & 3 closed          Open

       80487SX         Pins 2 & 3 closed          Open

       80486DX         Pins 1 & 2 closed         Closed