
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

MICROFRAME 386S6

Processor                  80386SX (exact location unidentified)
Processor Speed            16/20MHz
Chip Set                   C & T
Video Chip Set             None
Maximum Onboard Memory     8MB
Maximum Video Memory       None
Cache                      None
BIOS                       AMI
Dimensions                 330mm x 215mm
I/O Options                Floppy drive interface, IDE interface, parallel
                           port, PS/2 mouse interface, serial ports (2)
NPU Options                80387SX (exact location unidentified)

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                Location

  External battery            J1        Ready LED                 J16

  IDE interface LED           J3        Serial port 1             J18

  Front panel connector       J6        Serial port 2             J20

  PS/2 mouse interface        J8        Speaker                   J22

  Auxiliary keyboard          J9        Reset switch              J23
  connector

  IDE interface               J10       IDE access LED            J24

  Floppy drive                J11       Power LED & keylock       J40
  interface

  Parallel port               J15

                        USER CONFIGURABLE SETTINGS

                    Function                      Label       Position

     CMOS memory normal operation                  J2          Open

      CMOS memory clear                             J2         Closed

     Factory configured - do not alter             J7          Open
      (oscillators enabled)

      Factory configured - do not alter             J7         Closed
      (oscillators disabled)

      PS/2 mouse CLK enabled                       J12       Pins 2 & 3
                                                               closed

      PS/2 mouse CLK disabled                      J12       Pins 1 & 2
                                                               closed

      PS/2 mouse data enabled                      J13       Pins 1 & 2
                                                               closed

      PS/2 mouse data disabled                     J13       Pins 2 & 3
                                                               closed

      PS/2 mouse IRQ12 enabled                     J17         Closed

      PS/2 mouse IRQ12 disabled                    J17          Open

     Pipeline mode enabled                        J19         Closed

      Pipeline mode disabled                       J19          Open

     Monitor type select EGA/VGA                  J21       Pins 2 & 3
                                                               closed

      Monitor type select monochrome               J21       Pins 1 & 2
                                                               closed

     Factory configured - do not alter            J25      Unidentified

     Factory configured - do not alter            J27         Closed
      (80387SX ready signal)

     Factory configured - do not alter            J53      Unidentified

     IDE interface enabled                        S1/1          On

      IDE interface disabled                       S1/1         Off

     IDE IOCHRDY signal from pin 21               S1/2          On
      (Seagate/CDC/Imprimis/Miniscribe)

     IDE IOCHRDY signal from pin 27 (Quantum)     S1/3          On

     Factory configured - do not alter            S1/4       Not used

     Floppy drive interface enabled               S1/5          On

      Floppy drive interface disabled              S1/5         Off

     Floppy drive change signal enabled           S1/6          On

      Floppy drive change signal disabled          S1/6         Off

     Floppy drive speed select single speed       S1/7         Off

      Floppy drive speed select two speed          S1/7          On

     Floppy drive pre-compensation value          S1/8         Off
      select 125ns

      Floppy drive pre-compensation value          S1/8          On
      select 187ns

     Factory configured - do not alter            S4/4       Not used

  Note: If using a Conner or Western Digital drive, ignore settings for
  S1/2 & S1/3.

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB      (2) 256K x 9      None           None           None

      1MB       (2) 256K x 9   (2) 256K x 9      None           None

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

      2MB        (2) 1M x 9       None           None           None

      3MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9        None

      4MB        (2) 1M x 9    (2) 1M x 9        None           None

      5MB       (2) 256K x 9   (2) 256K x 9   (2) 1M x 9     (2) 1M x 9

      6MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9        None

      8MB        (2) 1M x 9    (2) 1M x 9     (2) 1M x 9     (2) 1M x 9

                           DMA CHANNEL SELECTION

               Channel                                 J26

                  High                         Pins 1 & 2 closed

                    Low                         Pins 2 & 3 closed

                      PARALLEL PORT LPT/IRQ SELECTION

      LPT/IRQ          S4/1       S4/2       S4/3       S4/5       S4/6
                       LPT1       LPT2       LPT3       IRQ5       IRQ7

        Disabled       Off        Off        Off        Off        Off

      LPT1/IRQ7        On        Off        Off        Off         On

       LPT2/IRQ5       Off         On        Off         On        Off

        LPT/IRQ7       Off        Off         On        Off         On

                      SERIAL PORT 1 COM/IRQ SELECTION

     COM/IRQ         S3/1     S3/2     S3/3      S3/4     S3/5      S3/6
                    COM1      COM2     COM3     COM4      IRQ3     IRQ4

       Disabled      Off      Off      Off       Off      Off       Off

     COM1/IRQ4      On       Off      Off       Off      Off       On

      COM2/IRQ3      Off       On      Off       Off       On       Off

      COM3/IRQ4      Off      Off       On       Off      Off       On

      COM4/IRQ3      Off      Off      Off       On        On       Off

                      SERIAL PORT 2 COM/IRQ SELECTION

     COM/IRQ         S2/1     S2/2     S2/3      S2/4     S2/5      S2/6
                    COM1      COM2     COM3     COM4      IRQ3     IRQ4

       Disabled      Off      Off      Off       Off      Off       Off

      COM1/IRQ4      On       Off      Off       Off      Off       On

     COM2/IRQ3      Off       On      Off       Off       On       Off

      COM3/IRQ4      Off      Off       On       Off      Off       On

      COM4/IRQ3      Off      Off      Off       On        On       Off

