
MICRONICS COMPUTERS, INC.

LPX54 (REV. 3A)

Processor              Pentium
Processor Speed        75/90/100MHz
Chip Set               VLSI
Max. Onboard DRAM      128MB
Cache                  256/512KB
BIOS                   Phoenix
Dimensions             330mm x 218mm
I/O Options            PS/2 mouse port, parallel port, serial ports (2),
                       VGA port, VGA feature connector, floppy drive
                       interface, IDE interfaces (2), riser slot
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  PS/2 mouse port            J6        Riser slot                 SL1

  Floppy drive               J10       Turbo switch               W12
  interface

  Serial port 1              J11       Turbo LED                  W13

  Serial port 2              J12       Reset switch               W15

  Parallel port              J13       Speaker                    W16

  IDE interface 2            J14       Auxiliary keyboard         W18
                                       connector

  IDE interface 1            J15       Power LED & keylock        W19

  VGA feature                J17       IDE interface LED          W27
  connector

  VGA port                   J18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Cache type select write back             W1              Open

      Cache type select write through          W1             Closed

     Flash BIOS normal mode                   W9           pins 2 & 3
                                                              closed

      Flash BIOS recovery mode                 W9           pins 1 & 2
                                                              closed

     Flash BIOS write protect                W10             Closed
      disabled

      Flash BIOS write protect enabled        W10              Open

     CMOS memory normal operation            W17           pins 1 & 2
                                                              closed

      CMOS memory clear                       W17           pins 2 & 3
                                                              closed

     Monitor type select color               W20             Closed

      Monitor type select monochrome          W20              Open

     PS/2 mouse installed                    W21             Closed

      PS/2 mouse not installed                W21              Open

     Factory configured - do not             W32           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             W33           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             W34           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             W35           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             W36           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             W37           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             W39           pins 2 & 3
      alter                                                   closed

     On board VGA enabled                    W40              Open

      On board VGA disabled                   W40             Closed

     Factory configured - do not             W41             Closed
      alter

     VGA hardware enabled                    W42              Open

      VGA hardware disabled                   W42             Closed

     Factory configured - do not             W43              Open
      alter

     Factory configured - do not             W44              Open
      alter

     Factory configured - do not             W45              Open
      alter

     Factory configured - do not             W46           pins 2 & 3
      alter                                                   closed

  Note: The location of W46 is unidentified.

             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) 2M x 36   (2) 1M x 36

     32MB        (2) 4M x 36      NONE

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

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

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

     64MB        (2) 8M x 36      NONE

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

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

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

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

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

                      VRAM CONFIGURATION

        Size                Bank 0               Bank 1

         1MB            (2) 256K x 16             NONE

         2MB            (2) 256K x 16        (2) 256K x 16

  Note: Bank 0 is factory installed and is not configurable.

                      CACHE CONFIGURATION

        Size                Bank 0               Bank 1

        256KB            (8) 32K x 8              NONE

        512KB            (8) 32K x 8          (8) 32K x 8

  Note: Bank 0 is factory installed and is not configurable.

                        CACHE JUMPER CONFIGURATION

      Size               W6                 W7                 W8

      256KB           pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

      512KB           pins 2 & 3        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

             CPU SPEED CONFIGURATION

  Speed       W3        W4        W5       W38

  75MHz     Closed    Closed     Open      Open

  90MHz     Closed     Open     Closed     Open

  100MHz     Open     Closed     Open     Closed

  Note: The location of W38 is unidentified.

  CPU CLOCK SPEED CONFIGURATION

      Speed             W2

      1.5x             Open

       2x             Closed

                      DMA CONFIGURATION

         DMA                 W22                  W23

        None                 Open                 Open

        DMA 1          pins 1 & 2 closed   pins 1 & 2 closed

        DMA 3          pins 2 & 3 closed   pins 2 & 3 closed

                      DMA CONFIGURATION

         DMA                 W25                  W26

        None                 Open                 Open

        DMA 6          pins 1 & 2 closed   pins 1 & 2 closed

        DMA 7          pins 2 & 3 closed   pins 2 & 3 closed

                             PCI CONFIGURATION

    IDE 1 IRQ      IDE 2 IRQ       W24            W28            W29

       IRQ 14      IRQ 15      pins 2 & 3       Open         pins 1 & 2
                                  closed                       closed

         None        None          Open          Open           Open

         None       IRQ 15      pins 2 & 3       Open           Open
                                  closed

       PCI INT A     None          Open         Closed          Open

       PCI INT A    IRQ 15      pins 2 & 3      Closed          Open
                                  closed

        IRQ 14       None          Open          Open         pins 1 & 2
                                                               closed

