
NEC TECHNOLOGIES, INC.

PowerMate Image 486SX/25i, 486/33i

Processor              80486SX/80486DX
Processor Speed        25/33MHz
Chip Set               OPTI
Max. Onboard DRAM      36MB
Cache                  64/128KB (on optional cache module)
BIOS                   NEC (Flash EEPROM)
Dimensions             330mm x 218mm
I/O Options            Bus mouse port, floppy drive interface, headphone
                       jack, IDE interface, microphone jack, parallel
                       port, proprietary cache module socket, proprietary
                       VGA feature card socket, serial ports (2), VGA port
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Proprietary cache         CA1        External battery          JP8
  module

  Floppy drive               J1        Parallel port              P1
  interface

  IDE interface              J2        Serial port 1              P2

  Proprietary VGA            J3        VGA port                   P4
  feature card

  Drive power                J6        Serial port 2              P5
                                       (optional)

  IDE interface LED         JP2        Indicator panel            P6
  (not used)                           assembly

  Speaker (not used)        JP6        Riser Card                 R1

  Note: The bus mouse port, headphone jack, and microphone jack are
  connected to the main board via the indicator panel assembly connector
  (P6).

                        USER CONFIGURABLE SETTINGS

               Function                  Jumper/Switch        Position

     Parallel port (P1) interrupt            JP7             pins 2 & 3
      select IRQ7                                              closed

      Parallel port (P1) interrupt            JP7             pins 1 & 2
      select IRQ5                                              closed

                                             JP9             pins 1 & 2
                                                               closed

      CPU type select 80486DX/33MHz           JP9             pins 2 & 3
                                                               closed

     On board video enabled                 SW1/1               Off

      On board video disabled                SW1/1               On

     Floppy drive interface enabled         SW1/2               Off

      Floppy drive interface                 SW1/2               On
      disabled

     Password enabled                       SW1/3               Off

      Password disabled                      SW1/3               On

     BIOS flash reprogramming               SW1/4               Off
      enabled

      BIOS flash reprogramming               SW1/4               On
      disabled

     Factory configured - do not             SW2               Open
      alter

                            DRAM CONFIGURATION

      Size             Bank 0             Bank 1             Bank 2

       4MB               4MB               NONE               NONE

       8MB               4MB            (4) 1M x 9            NONE

      12MB               4MB            (4) 1M x 9         (4) 1M x 9

      20MB               4MB            (4) 4M x 9            NONE

      24MB               4MB            (4) 1M x 9         (4) 4M x 9

      36MB               4MB            (4) 4M x 9         (4) 4M x 9

  Note: Bank 0 is factory installed and is not configurable. The location
  of bank 0 is unidentified.

