
CSS LABORATORIES, INC.

PREFERRED 433GA


Processor                 80486DX
Processor Speed           33MHz (upgradable to 50MHz with CPU module)
Chip Set                  C & T
Max. Onboard DRAM         32MB
SRAM Cache                64/256KB
BIOS                      AMI
Dimensions                330mm x 218mm
I/O Options               32-bit external CPU/NPU card slot, 32-bit local
                          video card slot, auxiliary keyboard, floppy
                          interface, IDE interface,

                          parallel port, serial port (2)
NPU Options               4167 (on 32-bit external CPU/NPU card)


[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  Speaker                  J4        IDE interface LED           LED

  External battery         J9        Floppy drive                PJ1
                                     interface

  Power LED &             J10        Parallel port               PJ2
  keylock

  Auxiliary               J11A       Serial port 1               PJ3
  keyboard

  Reset switch        J13/pins 1 &   Serial port 2               PJ4
                           2

  Turbo switch        J13/pins 3 &   IDE interface               PJ5
                           4

  Front panel             J39        32-bit external             SL1
  switches & LEDs                    CPU/NPU card

  Hard drive access       J40        32-bit MaxGraphics          SL2
  LED                                video card

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Floppy interface enabled                FDDEN          pins 2 & 3
                                                              closed

      Floppy 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        J3              open

     Monitor type select color                J12           pins 2 & 3
                                                              closed

      Monitor type select monochrome           J12           pins 1 & 2
                                                              closed

     Factory configured - do not alter     JP1 & JP2         unknown

                         SRAM JUMPER CONFIGURATION

    Size         J2            J5           J6          J7         J8

    64KB        open          open         open      pins 2 &    pins 2 &
                                                        3           3

   256KB       closed        closed       closed     pins 1 &    pins 1 &
                                                        2           2

  Note:Pins designated should be in the closed position.

             SRAM CONFIGURATION

     Size        Cache SRAM        TAG

     64KB        (8) 8K x 8    (1) 8K x 8

     256KB       (8) 32K x 8   (1) 32K x 8

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

                     SERIAL PORT 1 (PJ3) 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

  Note:Pins designated should be in the closed position.

                     SERIAL PORT 2 (PJ4) 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

  Note:Pins designated should be in the closed position.

                    PARALLEL PORT 1 (PJ2) CONFIGURATION

     LPT           IRQ           I/O        Jumper     Jumper     Jumper
                Interrupt      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

  Note:Pins designated should be in the closed position.

