I-BUS

LB486SLC

Processor              CX486SLC
Processor Speed        33MHz
Chip Set               OPTI
Max. Onboard DRAM      16MB
Cache                  128KB
BIOS                   Unidentified
Dimensions             300mm x 89mm
I/O Options            Floppy drive interface, IDE interface, parallel
                       port, PS/2 mouse port, serial ports (2), VGA port
NPU Options            80387SX

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Speaker                    J3        Parallel port              J15

  Reset switch               J4        Serial port 1              J16

  PS/2 mouse port            J6        Serial port 2              J17

  Auxiliary keyboard         J7        IDE interface LED          J18
  connector

  Floppy drive               J13       VGA port                   J22
  interface

  IDE interface              J14

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not              J1             Closed
      alter

  »   Factory configured - do not              J2             Closed
      alter

  »   Battery type select internal             J8           pins 2 & 3
                                                              closed

      CMOS memory clear                        J8           pins 1 & 2
                                                              closed

      IDE IRQ14 enabled                       J12             Closed

      IDE IRQ14 disabled                      J12              Open

      VGA IRQ9 enabled                        J23             Closed

      VGA IRQ9 disabled                       J23              Open

      On board video disabled                 J24           pins 1 & 2
                                                              closed

      On board video enabled                  J24           pins 2 & 3
                                                              closed

      Password enabled                        J25             Closed

      Password disabled                       J25              Open

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

     512KB        (2) 256K x 9       NONE

      1MB         (2) 256K x 9   (2) 256K x 9

      2MB         (2) 1M x 9         NONE

      4MB         (2) 1M x 9      (2) 1M x 9

      8MB         (2) 4M x 9         NONE

      16MB        (2) 4M x 9      (2) 4M x 9

                        CACHE CONFIGURATION

  Note: 128KB cache is factory installed and is not configurable.

      PARALLEL PORT IRQ CONFIGURATION

         IRQ                   J21

         IRQ3           pins 3 & 4 closed

         IRQ4           pins 5 & 6 closed

         IRQ5           pins 7 & 8 closed

         IRQ7          pins 9 & 10 closed

        IRQ12           pins 1 & 2 closed

      SERIAL PORT 1 IRQ CONFIGURATION

         IRQ                   J20

         IRQ3           pins 3 & 4 closed

         IRQ4           pins 5 & 6 closed

         IRQ5           pins 7 & 8 closed

         IRQ7          pins 9 & 10 closed

        IRQ12           pins 1 & 2 closed

      SERIAL PORT 2 IRQ CONFIGURATION

         IRQ                   J19

         IRQ3           pins 3 & 4 closed

         IRQ4           pins 5 & 6 closed

         IRQ5           pins 7 & 8 closed

         IRQ7          pins 9 & 10 closed

        IRQ12           pins 1 & 2 closed