
NEC TECHNOLOGIES, INC.

READY 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       Fax/modem, floppy drive interface, IDE interface,
                  multi-function connector (PS/2 mouse, PS/2 keyboard,
                  power LED), parallel port, proprietary riser card,
                  serial port, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  Floppy drive             J1        External battery            JP9
  interface

  IDE interface            J2        Speaker                     JP11

  Main board power       J7 & J8     Multi-function               P1
  connector                          connector

  RJ11 modem            J10 & J11    Parallel port                P2
  interface

  Proprietary riser       JA-1       Serial port                  P3
  card connection

  IDE interface LED        JP6       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
      LPT2/IRQ5 (278-27Fh)                                     closed

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

      Flash BIOS programable 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

                          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

                            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

