AMERICAN MEGATRENDS, INC.

EXCALIBUR VLB PENTIUM

Processor           Pentium
Processor Speed     60MHz
Chip Set            OPTi PTMWBA-V
Max. Onboard DRAM   128MB
Cache               128/256/512KB
BIOS                AMI
Dimensions          330mm x 218mm
I/O Options         32-bit VESA local bus slots(2), floppy drive
                    interface,

                    IDE interface, parallel port, PS/2 mouse port, serial
                    ports (2)
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse port             J1       Keylock                    J40

  External battery            J5       IDE interface LED          J41

  Parallel port               J6       Turbo LED                  J42

  IDE interface               J7       Reset switch               J43

  Serial port 1               J8       Turbo switch               J45

  Serial port 2               J9       32-bit VESA local bus       S1
                                       slot

  Floppy drive               J10       32-bit VESA local bus       S2
  interface                            slot

  Speaker                    J34

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Factory configured - do not            J11               Closed
      alter

  »   Factory configured - do not            J12                Open
      alter

  »   Factory configured - do not            J13                Open
      alter

  »   Factory configured - do not            J16                Open
      alter

  »   Parallel port set at IRQ7              J18             pins 1 & 2
                                                               closed

      Parallel port set at IRQ5              J18             pins 2 & 3
                                                               closed

  »   Serial port 1 set at IRQ4              J19             pins 1 & 2
                                                               closed

      Serial port 1 set at IRQ3              J19             pins 2 & 3
                                                               closed

  »   Serial port 2 set at IRQ3              J20             pins 1 & 2
                                                               closed

      Serial port 2 set at IRQ4              J20             pins 2 & 3
                                                               closed

  »   Enables IRQ12 from onboard             J28             pins 1 & 2
      mouse                                                    closed

      Enables IRQ12 from bus mouse           J28             pins 2 & 3
                                                               closed

  »   CMOS memory normal operation           J29             pins 1 & 2
                                                               closed

      CMOS memory clear (RAM                 J29             pins 2 & 3
      drain)                                                   closed

  »   Factory configured do not              J38            pins 1, 2, 5,
      alter                                                   6 closed

  »   Factory configured do not              J39                Open
      alter

  »   Factory configured - do not            J44                N/A
      alter

  »   Factory configured - do not            J49                Open
      alter

  »   Factory configured - do not            J50               Closed
      alter

  »   Flash ROM programming                  J51                Open
      disabled

      Flash ROM programming                  J51               Closed
      enabled

  »   Factory configured - do not           SW1/1               Off
      alter

  »   Monitor type select color             SW1/2                On

      Monitor type select                   SW1/2               Off
      monochrome

                     EXTENDED PARALLEL PORT DMA SELECT

       DMA Channel                  J17                      J25

  None (Factory setting)            Open                    Open

           DRQ0              pins 1 & 2 closed        pins 1 & 2 closed

           DRQ1              pins 3 & 4 closed        pins 3 & 4 closed

           DRQ3              pins 5 & 6 closed        pins 5 & 6 closed

                      DRAM CONFIGURATION

        Size               Bank 0               Bank 1

        2MB             (1) 256K x 36       (1) 256K x 36

        4MB             (1) 512K x 36       (1) 512K x 36

        8MB             (1) 1MB x 36         (1) 1MB x 36

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

        32MB            (1) 4MB x 36         (1) 4MB x 36

       128MB            (1) 8MB x 36         (1) 8MB x 36

  Note:The exact location of Bank 0 and Bank 1 are unknown.

                        CACHE MEMORY CONFIGURATION

    Size         J30          J31          J52         J53         J54

    128K        Open          Open       pins 1 &    pins 1 &    pins 1 &
                                            2           2           2

    256K        Open         Closed      pins 2 &    pins 2 &    pins 2 &
                                            3           3           3

    512K       Closed        Closed      pins 1 &    pins 1 &    pins 1 &
                                            2           2           2

  Note:Pins designated should be in the closed position.