
CSS LABORATORIES, INC.

Little Max 386SX

Processor               80386SX
Processor Speed         16/20MHz
Chip Set                C & T
Max. Onboard DRAM       16MB
SRAM Cache              None
BIOS                    AMI
Dimensions              334mm x 127mm
I/O Options             Auxiliary keyboard, IDE interface, floppy drive
                        interface, parallel port, serial ports(2)
NPU Options             80387SX

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                 Location

  Speaker                  J3         Hard drive access          J40
                                      LED

  Power LED &              J4         IDE interface LED          LED
  keylock

  Turbo switch             J6         Floppy drive               PJ1
                                      interface

  Auxiliary keyboard       J7A        Parallel port              PJ2

  Reset switch         J11 pins 1 &   Serial port 1              PJ3
                            2

  Turbo LED            J11 pins 3 &   Serial port 2              PJ4
                            4

  Front panel              J39        IDE interface              PJ5
  switches & LEDs

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Floppy drive interface enabled          FDDEN          pins 2 & 3
                                                              closed

      Floppy drive interface disabled         FDDEN          pins 1 & 2
                                                              closed

     IDE interface enabled                   IDEEN          pins 2 & 3
                                                              closed

      IDE interface disabled                  IDEEN          pins 1 & 2
                                                              closed

     Factory configured - do not alter         J2             open

     Monitor type select color                 J8           pins 2 & 3
                                                              closed

      Monitor type select monochrome            J8           pins 1 & 2
                                                              closed

     BIOS type select 27256                    J9           pins 1 & 2
                                                              closed

      BIOS type select 27128                    J9           pins 2 & 3
                                                              closed

      CPU speed select 16MHz                   J10            closed

      CPU speed select 20MHz                   J10             open

                                                J1           pins 2 & 3
                                                              closed
     Pipeline mode enabled                     W1
                                                             pins 1 & 2
                                                W2            closed

                                                             pins 2 & 3
                                                              closed

                                                J1           pins 1 & 2
                                                              closed
      Pipeline mode disabled                    W1
                                                             pins 2 & 3
                                                W2            closed

                                                             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

      2MB         (2) 1M x 9         NONE

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

      8MB         (2) 4M x 9         NONE

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

                        SERIAL PORT 1 CONFIGURATION

     COM            IRQ            I/O        Jumper      S0        S1
                 Interrupt      Address        PJ6

    COM 2          IRQ3           2F8h       pins 1 &    pins 1    pins 2
                                                3         & 2       & 3

    COM 1          IRQ4           3F8h       pins 1 &    pins 2    pins 2
                                                2         & 3       & 3

   Disabled         N/A           N/A          N/A       pins 1    pins 1
                                                          & 2       & 2

                        SERIAL PORT 2 CONFIGURATION

     COM            IRQ            I/O        Jumper      S2        S3
                 Interrupt      Address        PJ6

    COM 1          IRQ4           3F8h       pins 2 &    pins 1    pins 2
                                                4         & 2       & 3

    COM 2          IRQ3           2F8h       pins 3 &    pins 2    pins 2
                                                4         & 3       & 3

   Disabled         N/A           N/A          N/A       pins 1    pins 1
                                                          & 2       & 2

                    PARALLEL PORT 1 (PJ2) CONFIGURATION

     LPT        IRQ Interrupt   I/O Address     P0        P1        PRT

    LPT 1           IRQ7           3F8h       pins 1    pins 2     pins 2
                                               & 2       & 3        & 3

    LPT 2           IRQ5           2F8h       pins 2    pins 2     pins 1
                                               & 3       & 3        & 2

    LPT 3           IRQ7           3BCh       pins 2    pins 1     pins 2
                                               & 3       & 2        & 3

   Disabled         N/A            N/A        pins 1    pins 1      N/A
                                               & 2       & 2

