MULTI-TECH SYSTEMS, INC.

MT386SBC/486SLC

Processor             80386SX/CX486SLC
Processor Speed       25MHz
Chip Set              UMC
Max. Onboard DRAM     16MB
Cache                 None
BIOS                  Phoenix
Dimensions            340mm x 105mm
I/O Options           Floppy drive interface, IDE interface, parallel
                      port, serial ports (2), VGA port
NPU Options           80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose               Location

  Serial port 1              CN1        Serial port 2            P4

  VGA port                   CN2        Power LED &          P5 pins 1-5
                                        keylock

  IDE interface LED          J11        External switch       P5 pin 7
                                        reset

  Turbo LED                  J12        Keyboard inhibit      P5 pin 8
                                        switch

  Hardware reset             J13        Speaker             P5 pins 9-10
  switch

  IDE interface              P1         Turbo switch        P5 pins 11-12

  Floppy drive               P2         Parallel port            P8
  interface

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   Pipeline control disabled                 J2             Open

      Pipeline control disabled                 J2            Closed

  »   NPU asynchronous with CPU                 J3             Open

      NPU synchronous with CPU                  J3            Closed

  »   IDE interface enabled                     J4           pins 1 & 2
                                                              closed

      IDE interface disabled                    J4           pins 2 & 3
                                                              closed

  »   Hardware reset when DCD on COM1           J5            Closed
      goes from on to off enabled

      Hardware reset when DCD on COM1           J5             Open
      goes from on to off disabled

  »   Parallel port unidirectional              J7           pins 2 & 3
      (printer)                                               closed

      Parallel port bidirectional               J7           pins 1 & 2
                                                              closed

  »   IRQ9 connected to AT bus                  J10          pins 2 & 3
                                                              closed

      IRQ9 connected to internal VGA            J10          pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 9       NONE

      1MB         (2) 256K x 9   (2) 256K x 9

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

      16MB        (2) 4M x 9      (2) 4M x 9