NEC TECHNOLOGIES, INC.

POWERMATE SX/20

Processor                  80386SX
Processor Speed            20MHz
Video Processor            Unidentified
Chipset                    NEC
Maximum Onboard Memory     12MB DRAM (8MB on memory card, 2MB on memory
                           module)
Maximum Video Memory       256KB DRAM (exact location unidentified)
BIOS                       NEC
Dimensions                 254 x 218mm
I/O Options                32-bit memory card slot (2), CPU card slot,
                           PS/2 mouse port, floppy drive interface, IDE
                           interface, parallel port, serial port, VGA
                           daughterboard header
NPU Options                80387SX
Video Types Supported      VGA
Highest Resolution         800 x 600
Supported

[Image]

                                CONNECTIONS

        Purpose            Location           Purpose           Location

  PS/2 mouse port            CN1       Header to mainboard        CN8B
                                       CN8A

  Keyboard connector         CN2       DC power out               CN9
                                       connector

  VGA port                   CN3       DC power out               CN10
                                       connector

  Serial port                CN4       Speaker                    CN11

  Parallel port              CN5       Front panel connector      CN12

  IDE interface              CN6       Memory module header       CN13

  Floppy drive               CN7       VGA card header            CN14
  interface

  CPU card header            CN8A      32-bit external            SL2
                                       memory card

                        USER CONFIGURABLE SETTINGS

                Function                      Label          Position

  »   Password normal operation                J1            Pins 2 & 3
                                                              closed

      Password clear                           J1            Pins 1 & 2
                                                              closed

  »   IDE interface enabled                    J2            Pins 2 & 3
                                                              closed

      IDE interface disabled                   J2            Pins 1 & 2
                                                              closed

  »   Serial port interrupt set to IRQ4        J3            Pins 2 & 3
                                                              closed

      Serial port interrupt set to IRQ3        J3            Pins 1 & 2
                                                              closed

  »   Monitor type select color               SW1/1             On

      Monitor type select monochrome          SW1/1             Off

  »   Floppy controller address set to        SW1/2             On
      370h

      Floppy controller address set to        SW1/2             Off
      270h

  »   Floppy drive interface enabled          SW1/3             On

      Floppy drive interface disabled         SW1/3             Off

  »   Serial port address set to 3F8h         SW1/4             On
      (COM1:)

      Serial port address set to 2F8h         SW1/4             Off
      (COM2:)

  »   Serial port enabled                     SW1/5             On

      Serial port disabled                    SW1/5             Off

  »   Parallel port enabled                   SW1/6             On

      Parallel port disabled                  SW1/6             Off

  »   Keyboard D1 signal intercepted          SW1/7             On

      Keyboard D1 signal not                  SW1/7             Off
      intercepted

  »   Memory from 512KB to 640KB              SW1/9             Off
      enabled

      Memory from 512KB to 640KB              SW1/9             On
      disabled

  »   Mouse port enabled                     SW1/10             On

      Mouse port disabled                    SW1/10             Off

                       ON-BOARD VIDEO CONFIGURATION

           Setting                      J8                   SW1/8

  »          Disabled           Pins 1 & 2 closed             Off

             Enabled            Pins 2 & 3 closed             On

                            DRAM CONFIGURATION

            There is 2MB of DRAM installed on the mainboard. This memory
            is not configurable.

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   Factory configured - do not alter      SW1/5             Off

  »   Factory configured - do not alter      SW1/6             Off

                         DRAM CONFIGURATION

     Size        Bank 0        Bank 1        Bank 2        Bank 3

     2MB       (2) 1M x 9       None          None          None

     4MB       (2) 1M x 9    (2) 1M x 9       None          None

     6MB       (2) 1M x 9    (2) 1M x 9    (2) 1M x 9       None

     8MB       (2) 1M x 9    (2) 1M x 9    (2) 1M x 9    (2) 1M x 9

         DRAM SWITCH CONFIGURATION

  Size     SW1/1   SW1/2    SW1/3    SW1/4

   2MB      On      Off      Off      Off

   4MB      On       On      Off      Off

   6MB      On       On       On      Off

   8MB      On       On       On       On