
ICL

AC41644/41647 MODELS E450/X450

Processor             Pentium
Processor Speed       75/90/100MHz
Chip Set              OPTI
Max. Onboard DRAM     128MB
Cache                 256KB (on daughterboard)
BIOS                  ICL
Dimensions            330mm x 200mm
I/O Options           PS/2 mouse port, parallel port, serial ports (2),
                      network adapter, floppy drive interface, IDE
                      interfaces (2), proprietary riser card slot, sound
                      in, sound out
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                  Location

  3.3V power               E#         IDE interface              J11
  connector                           (primary)

  Keyboard and mouse       J0         IDE interface              J12
  PTC                                 (primary)

  Parallel port            J2         Network adapter            J13

  Serial port 1            J3         CPU fan                    J15

  Serial port 2            J4         Microphone in              J16

  PS/2 mouse port          J5         Speaker out                J17

  Hard drive LED           J6         Unidentified               J18

  Front panel LEDs         J7         Reset switch           JP1 pins 1 &
                                                                  2

  Chassis fan power        J8         Proprietary riser          SL1
                                      card slot

  Power switch             J9         Cache expansion slot       SL2

  Floppy drive             J10
  interface

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not         JP1 pins 9 &        Closed
      alter                                    10

     Password disabled                    JP1 pins 15         Open
                                              & 16

      Password enabled                     JP1 pins 15        Closed
                                              & 16

     Factory configured - do not          JP1 pins 17        Closed
      alter                                   & 18

     BIOS write protect enabled           JP1 pins 19         Open
                                              & 20

      BIOS write protect disabled          JP1 pins 19        Closed
                                              & 20

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 36      NONE

     16MB        (2) 1M x 36   (2) 1M x 36

     16MB        (2) 2M x 36      NONE

     24MB        (2) 1M x 36   (2) 2M x 36

     32MB        (2) 2M x 36   (2) 2M x 36

     32MB        (2) 4M x 36      NONE

     40MB        (2) 1M x 36   (2) 4M x 36

     48MB        (2) 2M x 36   (2) 4M x 36

     64MB        (2) 4M x 36   (2) 4M x 36

     72MB        (2) 1M x 36   (2) 8M x 36

     80MB        (2) 2M x 36   (2) 8M x 36

     96MB        (2) 4M x 36   (2) 8M x 36

     128MB       (2) 8M x 36   (2) 8M x 36

           CMOS MODE CONFIGURATION

         Mode                   JP1

        Normal          pins 11 & 12 closed

         Clear          pins 13 & 14 closed

                        CPU SPEED CONFIGURATION

      Speed        JP1 pins 3 & 4    JP1 pins 5 & 6    JP1 pins 7 & 8

      75MHz            Closed            Closed             Open

      90MHz            Closed             Open             Closed

      100MHz            Open             Closed             Open

