
JC INFORMATION SYSTEMS CORPORATION

MODEL 2030

Processor           80486SX/80487SX/80486DX/80486DX2
Processor Speed     20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set            C & T
Max. Onboard DRAM   64MB
Cache               64/256KB
BIOS                C & T
Dimensions          330mm x 218mm
I/O Options         32-bit VESA card slot

                    Multi-mode type local bus card slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose              Location    Purpose                      Location

  External battery        J1       Speaker                         J5

  Turbo LED               J2       Reset switch                    S9

  Turbo switch            J3       Multi-mode/local bus card       L1

  Power LED &             J4       32-bit VESA card                V1
  keylock

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     BIOS type select Flash ROM               W5            pins 1 & 2
                                                              closed

      BIOS type select EPROM                   W5            pins 2 & 3
                                                              closed

     Monitor type select monochrome           W9              open

      Monitor type select color                W9             closed

     CMOS memory normal operation             W11           pins 2 & 3
                                                              closed

      CMOS memory clear                        W11           pins 1 & 2
                                                              closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (4) 1M x 9       NONE

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

     16MB        (4) 4M x 9       NONE

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

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

     64MB        (4) 16M x 9      NONE

                          CPU TYPE CONFIGURATION

       Type                W12               W13               W14

     80486DX2           pins 2 & 3         closed           pins 1 & 2
                         closed                               closed

      80486DX           pins 2 & 3         closed           pins 1 & 2
                         closed                               closed

      80487SX           pins 1 & 2         closed           pins 1 & 2
                         closed                               closed

      80486SX              N/A               N/A            pins 2 & 3
                                                              closed

                             CPU CONFIGURATION

       Speed         OSCI       S0        S1        S2       W7      W8

       20MHz        40MHz     closed     open     closed    pins    pins
                                                            1 & 2   1 & 2

       25MHz        50MHz      open      open     closed    pins    pins
                                                            1 & 2   1 & 2

       33MHz        66MHz     closed    closed     open     pins    pins
                                                            1 & 2   1 & 2

       40MHz        80MHz      open     closed     open     pins    pins
                                                            1 & 2   1 & 2

  50(internal)MHz   50MHz      open      open     closed    pins    pins
                                                            2 & 3   2 & 3

       50MHz        50MHz      open      open     closed    pins    pins
                                                            1 & 2   1 & 2

  66(internal)MHz   66MHz     closed    closed     open     pins    pins
                                                            1 & 2   1 & 2

  Note:Pins designated should be in the closed position.

                        CACHE JUMPER CONFIGURATION

      Size               W10               W15                 W16

      64KB            pins 2 & 3        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

      256KB           pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

  Note:The location of Jumper W15 and W16 may vary.

                    CACHE CONFIGURATION

     Size       Cache CACHE      Location         TAG

     64KB        (8) 8K x 8       CACHE       (2) 16K x 1

     256KB      (8) 32K x 8       CACHE       (2) 16K x 1

