
NEC TECHNOLOGIES, INC.

POWERMATE 425/433/466

Processor         80486SX/80487DX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          C & T
Max. Onboard DRAM 64MB
Cache             NONE
BIOS              NEC
Dimensions        330mm x 218mm
I/O Options       Floppy drive interface, IDE interface, multifunction
                  connector

                  (PS/2 mouse, PS/2 keyboard, power LED), parallel port,

                  proprietary ISA riser card slot, serial port, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  Proprietary riser        JA-1       Speaker                    JP11
  card connector

  Floppy drive              J1        Mutifunction                P1
  interface                           connector

  IDE interface             J2        Parallel port               P2

  IDE interface LED         JP6       Serial port                 P3

  External battery          JP9       VGA port                    P4

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     Parallel port (P2) select              JP13            pins 1 & 2
      LPT1/IRQ7 (378-37Fh)                                     closed

      Parallel port (P2) select              JP13            pins 2 & 3
      LPT1/IRQ5 (278-27Fh)                                     closed

     Flash BIOS programmable via            JP14            pins 1 & 2
      network disabled                                         closed

      Flash BIOS programmable via            JP14            pins 2 & 3
      network enabled                                          closed

     Onboard video enabled                 SW1/1               Off

      Onboard video disabled                SW1/1                On

     Floppy interface (J1) enabled         SW1/2               Off

      Floppy interface (J1)                 SW1/2                On
      disabled

     System password enabled               SW1/3               Off

      System password disabled &            SW1/3                On
      cleared

     Flash BIOS write enabled              SW1/4               Off

      Flash BIOS write disabled             SW1/4                On

                            DRAM CONFIGURATION

     Size         Bank 0        Bank 1         Bank 2          Bank 3

     4MB        (1) 1M x 36      NONE           NONE            NONE

     5MB        (1) 1M x 36    (1) 256K x       NONE            NONE
                                  36

     6MB        (1) 1M x 36    (1) 256K x     (1) 256K x        NONE
                                  36             36

     7MB        (1) 1M x 36    (1) 256K x     (1) 256K x    (1) 256K x 36
                                  36             36

     8MB        (1) 1M x 36   (1) 1M x 36       NONE            NONE

     9MB        (1) 1M x 36   (1) 1M x 36     (1) 256K x        NONE
                                                 36

     10MB       (1) 1M x 36   (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                 36

     12MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36        NONE

     13MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36    (1) 256K x 36

     16MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     16MB       (1) 4M x 36      NONE           NONE            NONE

     17MB       (1) 4M x 36    (1) 256K x       NONE            NONE
                                  36

     18MB       (1) 4M x 36    (1) 256K x     (1) 256K x        NONE
                                  36             36

     19MB       (1) 4M x 36    (1) 256K x     (1) 256K x    (1) 256K x 36
                                  36             36

     20MB       (1) 4M x 36   (1) 1M x 36       NONE            NONE

     21MB       (1) 4M x 36   (1) 1M x 36     (1) 256K x        NONE
                                                 36

     22MB       (1) 4M x 36   (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                 36

     24MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36        NONE

     25MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36    (1) 256K x 36

     28MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     32MB       (1) 4M x 36   (1) 4M x 36       NONE            NONE

     33MB       (1) 4M x 36   (1) 4M x 36     (1) 256K x        NONE
                                                 36

     34MB       (1) 4M x 36   (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                 36

     36MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36        NONE

     37MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36    (1) 256K x 36

     40MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36     (1) 1M x 36

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36        NONE

     49MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 256K x 36

     52MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36     (1) 1M x 36

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

                          CPU TYPE CONFIGURATION

       Type               JP1                JP2               JP12

   80486SX PQFP        pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

    80486SX PGA        pins 2 & 3         pins 2 & 3        pins 2 & 3
                         closed            closed             closed

    80487SX PGA        pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

    80486DX PGA        pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

   80486DX2 PGA        pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

         CPU SPEED CONFIGURATION

     Clock Speed             JP15

     25/50i MHz       pins 1 & 2 closed

     33/66i MHz       pins 2 & 3 closed

