
MODULAR CIRCUIT TECHNOLOGY

MCT-M3486-33/40

Processor        80386SX/80486SX/80487SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM32MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      None
NPU Options      80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                      J6       Turbo switch               J10

  External battery             J7       Turbo LED                  J11

  Power LED & keylock          J8       Reset switch               J12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                J3           pins 2 & 3
                                                              closed

      Monitor type select monochrome           J3           pins 1 & 2
                                                              closed

     NPU disabled                            JP2              Open

      NPU enabled                             JP2             Closed

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

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

      16MB        (4) 4M x 9         NONE

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

     128KB      (4) 32K x 8        NONE       (1) 8K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

  Size       W2       W3        W4        W5     W6      W7     W8    W9

  64KB      Open     Open      Open      Open    1 &    Open    1 &   1 &
                                                  2             2      2

  128KB     Open     Open     Closed    Closed   2 &    1 & 2   2 &   1 &
                                                  3             3      2

  256KB    Closed    Closed   Closed    Closed   1 &    2 & 3   2 &   2 &
                                                  2             3      3

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               JP1               W12                W13

      80386SX          pins 1 & 2           Open               Open
                         closed

      80487SX          pins 2 & 3      pins 1 & 2, 3 &      pins 2 & 3
                         closed           4 closed            closed

      80486SX          pins 2 & 3        pins 2 & 3            Open
                         closed            closed

      80486DX          pins 2 & 3      pins 1 & 2, 3 &      pins 1 & 2
                         closed           4 closed            closed

     80486DX2          pins 2 & 3      pins 1 & 2, 3 &      pins 1 & 2
                         closed           4 closed            closed

