
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

MicroFrame 386S


Processor               80386SX
Processor speed         16/20MHz
Chip Set                C & T
Max. Onboard DRAM       4MB
Cache                   None
BIOS                    AMI/Quadtel
Dimensions              330mm x 218mm
I/O Options             Parallel port, serial ports (2), floppy drive
                        interface, IDE interface, bus mouse port
NPU Options             80387SX

[Image]

                                CONNECTIONS

         Purpose           Location           Purpose           Location

  External battery            J1       Auxiliary Keyboard          J8

  CMOS Reset switch           J2       IDE interface               J9

  Floppy drive LED            J3       Floppy drive               J11
                                       interface

  No connection (key)      J6 pin 1    CPU ready LED              J12

  -Ready                   J6 pin 2    Reset switch               J13

  -Keyboard disabled       J6 pin 3    Parallel port              J14

  No connection            J6 pin 4    Serial port (COM1)         J19

  No connection            J6 pin 5    Serial port (COM2)         J20

  -Disk                    J6 pin 6    Digital video              J22

  -Reset                   J6 pin 7    Analog video               J23

  -GND                     J6 pin 8    Speaker                    J24

  -Speaker                 J6 pin 9    IDE interface LED          J28

  +5VDC                    J6 pin 10   Power LED & keylock        J52

  Bus mouse port              J7

                        USER CONFIGURABLE SETTINGS

                 Function                      Jumper         Position

     IDE Interface - pin 34 is not             J15             Open
      grounded

      IDE Interface - pin 34 is grounded        J15            Closed

     Factory configured - do not alter         J16          pins 1 & 2
                                                               closed

     Parallel port (J14) select                J21            Closed
      LPT1/IRQ7

      Parallel port (J14) disabled              J21             Open

     Serial port (J19) select COM1/IRQ4        J25            Closed

      Serial port (J19) disabled                J25             Open

     DMA signal select default-high            J26          pins 1 & 2
                                                               closed

      DMA signal select default-low             J26          pins 2 & 3
                                                               closed

     Serial port (J20) select COM2/IRQ3        J30            Closed

      Serial port (J20) disabled                J30             Open

     Floppy precompensation select 125ns       J31             Open

      Floppy precompensation select 187ns       J31            Closed

     Floppy drive speed select single          J32             Open
      speed

      Floppy drive speed select dual            J32            Closed
      speed

     Floppy disk change signal enabled         J33            Closed

      Floppy disk change signal disabled        J33             Open

     On-board video port enabled               J34            Closed

      On-board video port disabled              J34             Open

     Pipeline mode enabled                     J35            Closed

      Pipeline mode disabled                    J35             Open

     Factory configured - do not alter         J36             Open

     Factory configured - do not alter         J37          pins 1 & 2
                                                               closed

     On-board video mode select 16-bit         J38             Open

      On-board video mode select 8-bit          J38            Closed

     NPU disabled                              J39             Open

      NPU enabled                               J39            Closed

                    USER CONFIGURABLE SETTINGS (CONT)

                 Function                     Jumper         Position

     Factory configured - do not alter        J42           pins 1 & 2
                                                              closed

     Bus mouse port (J7) interface            J45            Closed
      select IRQ12

      Bus mouse port (J7) interface            J45             Open
      select none

      Keyboard controller type select          J48           pins 1 & 2
      without mouse support                                   closed

      Keyboard controller type select          J48           pins 2 & 3
      with mouse support                                      closed

     Monitor type select color                J51           pins 2 & 3
                                                              closed

      Monitor type select monochrome           J51           pins 1 & 2
                                                              closed

     Factory configured - do not alter        J53             Open

     IRQ5 enabled (Rev. B and later)          J54            Closed

      IRQ5 disabled (Rev. B and later)         J54             Open

     On-board mouse support enabled           J55           pins 1 & 2
      (Rev. B and later)                                      closed

      On-board mouse support disabled          J55           pins 1 & 2
      (Rev. B and later)                                      closed

            DRAM CONFIGURATION

   Size         Bank 0          Bank 1

   512KB     (2) 256K x 9        NONE

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

    2MB       (2) 1M x 9         NONE

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

                        VIDEO DISPLAY MODE JUMPERS

    BIOS        BIOS      JP27
  Primary    Secondary    pins

  Adapter     Adapter    1 & 2    3 & 4    5 & 6    7 & 8    9 & 10   JP29

  MDA        *EGA w/CD   Closed   Closed   Closed   Closed   Open     1 &
             40x25                                                     2

  MDA        *EGA w/CD    Open    Closed   Closed   Closed   Open     1 &
             80x25                                                     2

  MDA        *EGA w/ED   Closed    Open    Closed   Closed   Open     1 &
             200 line                                                  2

  MDA        *EGA w/ED    Open     Open    Closed   Closed   Open     1 &
             350 line                                                  2

  CGA        *EGA w/MD   Closed   Closed    Open    Closed   Open     2 &
  40x25                                                                3

  CGA        *EGA w/MD    Open    Closed    Open    Closed   Open     2 &
  80x25                                                                3

  *EGA       MDA or      Closed    Open     Open    Closed   Open     1 &
  w/CD       none                                                      2
  40x25

  *EGA       MDA or       Open     Open     Open    Closed   Open     1 &
  w/CD       none                                                      2
  80x25

  *EGA       MDA or      Closed   Closed   Closed    Open    Open     1 &
  w/ED200    none                                                      2
  line

  *EGA       MDA or       Open    Closed   Closed    Open    Open     1 &
  w/ED350    none                                                      2
  line

  *EGA       CGA 40x25   Closed    Open    Closed    Open    Open     2 &
  w/MD       or none                                                   3

  *EGA       CGA 80x25    Open     Open    Closed    Open    Open     2 &
  w/MD       or none                                                   3

  All VGA       N/A       N/A      N/A      N/A      N/A     Closed   N/A
  Modes

  Note:Settings marked with an asterisk (*) indicate configuration of the
  onboard video adapter, other configurations require an optional video
  card. Pins designated should be in the closed position.

  CD = Color Display (CGA)

  ED = Enhanced color display (EGA)

  MD = Monochrome Display

                       IOCHRDY SIGNAL CONFIGURATION

                      Drive                          J17          J18

  Pin 21 CDC/Imprimis/Miniscribe/Maxtor/Seagate     Closed        Open

  pin 27 Quantum                                     Open        Closed

