
EVEREX SYSTEMS, INC.

STEP 286/20 (EV-1820)

Processor         80286
Processor Speed   20MHz
Chip Set          Everex
Max. Onboard DRAM 4MB
SRAM Cache        32/64/128KB
BIOS              Everex
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External memory card        S1
  slot

                            DRAM CONFIGURATION

    Size         Bank 0         Bank 1         Bank 2          Bank 3

    512KB      (18) 41256        NONE           NONE            NONE

     1MB       (18) 41256     (18) 41256        NONE            NONE

     2MB       (18) 41256     (18) 41256     (18) 41256      (18) 41256

     2MB       (18) 411000       NONE           NONE            NONE

     4MB       (18) 411000    (18) 411000       NONE            NONE

     8MB       (18) 411000    (18) 411000    (18) 411000     (18) 411000

  Note:Banks 2 and 3 are utilized when a 32-bit external memory card is
  installed at S1.

             SRAM CONFIGURATION

     Size        Cache SRAM     Location

     32KB        (4) 8K x 8      Bank 0

     64KB        (8) 8K x 8    Banks 0 & 1

     128KB       (4) 32K x 8     Bank 0

