
ICL

MX486

Processor              80486DX
Processor Speed        33/50MHz
Chip Set               Unidentified
Max. Onboard DRAM      64MB
Cache                  Unidentified
BIOS                   Unidentified
Dimensions             355mm x 305mm
I/O Options            LCD/BIOS slot, local bus slots, external memory
                       card, external processor board, serial ports (2),
                       parallel port, PS/2 mouse interface, floppy drive
                       interface, IDE interface, LCD interface
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  LCD/BIOS slot            SL1        Local bus slots         SL8 - SL11
                                      extension slots

  Local bus slots       SL2 - SL7

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Multiprocessing type select               J3           pins 2 & 3
      asymmetric                                              closed

      Multiprocessing type select               J3           pins 1 & 2
      symmetric                                               closed

     CPU speed select 33MHz used              J10             Open

      CPU speed select 33MHz not used          J10            Closed

     Temperature sensor for second            J22             Open
      486/33 board in slot 13

      Temperature sensor for second            J22            Closed
      486/50 board in slot 14

     Factory configured - do not alter        J257             N/A

     Factory configured - do not alter        J258             N/A

     ISP INT to CPU1 unlatched                JP3           pins 1 & 2
                                                              closed

      ISP INT to CPU1 latched                  JP3           pins 2 & 3
                                                              closed

     I/O cycles long wait enabled             JP7            Closed

      I/O cycles long wait disabled            JP7             Open

     Cache type select programmed by          JP8           pins 1 & 2
      software                                                closed

      Cache type select write back             JP8           pins 2 & 3
                                                              closed

      Cache type select write through          JP8             Open

                                                                   [Image]

                 DRAM CONFIGURATION

   Size     Bank 0    Bank 1     Bank 2    Bank 3

   8MB       8MB       NONE       NONE      NONE

   12MB      8MB        4MB       NONE      NONE

   16MB      8MB        4MB       4MB       NONE

   16MB      8MB        8MB       NONE      NONE

   16MB      16MB      NONE       NONE      NONE

   24MB      8MB        4MB       4MB        8MB

   24MB      8MB        8MB       8MB       NONE

   24MB      8MB       16MB       NONE      NONE

   32MB      8MB        8MB       8MB        8MB

   32MB      16MB      16MB       NONE      NONE

   40MB      8MB       16MB       16MB      NONE

   48MB      16MB      16MB       16MB      NONE

   56MB      8MB       16MB       16MB      16MB

   64MB      16MB      16MB       16MB      16MB

  Note: Memory is installed by using ICL modules.

[Image]

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not              J1              N/A
      alter

     Factory configured - do not             JP1           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             JP2           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JP3             Closed
      alter

                        CACHE CONFIGURATION

  Note: The size and configuration of the cache is unidentified.

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  System board connector     CN1       Serial port 1              CN7

  System board connector     CN2       Serial port 2              CN8

  System board connector     CN3       Parallel port              CN9

  System board connector     CN4       PS/2 mouse connector       CN10

  Chassis fan power          CN5       Keyboard connector         CN11

  Chassis fan power          CN6

  Note: Jumper sizes may not be exact. They are shown for location
  purposes only.

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     IRQ select IRQ7                          CON3          pins 2 & 3
                                                              closed

      IRQ select IRQ5                          CON3          pins 1 & 2
                                                              closed

     Motor drive spindle speed select         CON4            Open
      single speed

      Motor drive spindle speed select         CON4           Closed
      double speed

     Pre-compensation mode select             CON5           Closed
      normal

      Pre-compensation mode select             CON5            Open
      alternate

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                Location

  Temperature sensor         CON1       Floppy drive              cn2
  interface                             interface

  Chassis fan power          CON2       IDE interface             cn3

  Floppy drive               cn1
  interface

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Floppy drives write protect            CON15          pins 1 & 2
      disabled                                                closed

      Floppy drives write protect            CON15          pins 2 & 3
      enabled                                                 closed

     Factory configured - do not            CON16             N/A
      alter

     Factory configured - do not            CON17             N/A
      alter

[Image]

           CONNECTIONS

     Purpose         Location

  LCD interface        CN1

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Factory configured - do not alter        JP1            Closed

     INT 2 asymmetric                         JP2           pins 2 & 3
                                                              closed

      INT 2 symmetric                          JP2           pins 1 & 2
                                                              closed

     Safe operation enabled                   JP3           pins 2 & 3
                                                              closed

      Micro-switch override                    JP3           pins 1 & 2
                                                              closed

     INT ACK 2 asymmetric                     JP6           pins 2 & 3
                                                              closed

      INT ACK 2 symmetric                      JP6           pins 1 & 2
                                                              closed

     Keyboard/mouse lock set by key           JP20          pins 1 & 2
                                                              closed

      Keyboard/mouse enabled                   JP20          pins 2 & 3
                                                              closed

      Keyboard/mouse locked                    JP20            Open

     I/O CHK# disabled                        JP21            Open

      /O CHK# enabled                          JP21           Closed

     3-mode diskette primary address          JP22          pins 1 & 2
      enabled                                                 closed

      3-mode diskette secondary address        JP22          pins 2 & 3
      enabled                                                 closed

     VCCAUX 5v auxiliary enabled              JP23            Open

      VCCAUX 5v auxiliary disabled             JP23           Closed

     DCM COM port access, lower 64KB          JP34          pins 2 & 3
      memory installed                                        closed

      DCM COM port access, upper 64KB          JP34          pins 1 & 2
      memory installed                                        closed

     Factory configured - do not alter        J250             N/A

     Factory configured - do not alter        J257             N/A

     Factory configured - do not alter        J258             N/A

     Factory configured - do not alter        J259             N/A

                    USER CONFIGURABLE SETTINGS (CONT)

                Function                     Jumper          Position

     Factory configured - do not             J261             N/A
      alter

     Factory configured - do not             J262             N/A
      alter

     Factory configured - do not            JSW1/1            N/A
      alter

     Factory configured - do not            JSW1/2            N/A
      alter

     Factory configured - do not            JSW1/3            N/A
      alter

     Factory configured - do not            JSW1/4            N/A
      alter

     Factory configured - do not            JSW1/5            N/A
      alter

     RAM test enabled                       JSW1/6            Off

      RAM test disabled                      JSW1/6             On

     COM port speed set by ECU              JSW1/7            Off

      COM1 = 9600, n, 8, 1 & COM2 =          JSW1/7             On
      2400, n, 8, 1

     Password disabled                      JSW1/8             On

      Password enabled                       JSW1/8            Off

  Note: The location of JP34 is unidentified.

                         EISA MEMORY CONFIGURATION

     Setting             JP31               JP32               JP33

  1C000H - 1FFFFH      pins 1 & 2        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

  18000H - 1BFFFH      pins 2 & 3        pins 1 & 2         pins 1 & 2
                        closed             closed             closed

  14000H - 17FFFH      pins 1 & 2        pins 2 & 3         pins 1 & 2
                        closed             closed             closed

  10000H - 13FFFH      pins 2 & 3        pins 2 & 3         pins 1 & 2
                        closed             closed             closed

  0C000H - 0FFFFH      pins 1 & 2        pins 1 & 2         pins 2 & 3
                        closed             closed             closed

  08000H - 0BFFFH      pins 2 & 3        pins 1 & 2         pins 2 & 3
                        closed             closed             closed

  04000H - 07FFFH      pins 1 & 2        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

  00000H - 03FFFH      pins 2 & 3        pins 2 & 3         pins 2 & 3
                        closed             closed             closed

