
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

