
COMPUTREND SYSTEMS, INC.

PCI PENTIUM AL4

Processor             Pentium
Processor Speed       75/90/100/120MHz
Chip Set              ALI
Max. Onboard DRAM     128MB
Cache                 256/512/1024KB
BIOS                  AMI
Dimensions            330mm x 220mm
I/O Options           32-bit PCI slots (4), floppy drive interface, green
                      PC connector, IDE interfaces (2), parallel port,
                      serial ports (2)
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                 Location

  Serial port 1            CN1        Turbo LED             JFP pins 12 &
                                                                 13

  Serial port 2            CN2        Turbo switch          JFP pins 15 -
                                                                 17

  Parallel port            CN3        Reset switch          JFP pins 19 &
                                                                 20

  Floppy drive             CN4        IDE interface LED         JFPA
  interface

  IDE interface 2          CN5        Green PC connector        JG1
                                      (monitor)

  IDE interface 1          CN6        Green PC LED              JG2

  External battery         JB1        Green PC connector        JG3

  Power LED &          JFP pins 1 -   Chassis fan power         JP10
  keylock                   5

  Speaker              JFP pins 7 -   32-bit PCI slots       PC1 - PC4
                           10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battery type select internal            JB1           Pins 2 & 3
                                                              closed

      Battery type select external            JB1             Closed

      CMOS memory clear                       JB1           Pins 3 & 4
                                                              closed

     Flash BIOS voltage select 12v           JP2           Pins 1 & 2
                                                              closed

      Flash BIOS voltage select 5v            JP2           Pins 2 & 3
                                                              closed

     Power good signal detect from           JP5           Pins 2 & 3
      board                                                   closed

      Power good signal detect from           JP5           Pins 1 & 2
      power supply                                            closed

      IDE interface enabled                   JP7              Open

      IDE interface disabled                  JP7             Closed

     Factory configured - do not             JP8              N/A
      alter

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 512K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       6MB        (2) 512K x 36    (2) 256K x 36

       6MB        (2) 256K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

       8MB        (2) 512K x 36    (2) 512K x 36

      10MB         (2) 1M x 36     (2) 256K x 36

      10MB        (2) 256K x 36     (2) 1M x 36

      12MB         (2) 1M x 36     (2) 512K x 36

      12MB        (2) 512K x 36     (2) 1M x 36

      16MB         (2) 2M x 36          NONE

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

      18MB         (2) 2M x 36     (2) 256K x 36

      18MB        (2) 256K x 36     (2) 2M x 36

      20MB         (2) 2M x 36     (2) 512K x 36

      20MB        (2) 512K x 36     (2) 2M x 36

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

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

      32MB         (2) 4M x 36          NONE

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

      34MB         (2) 4M x 36     (2) 256K x 36

      34MB        (2) 256K x 36     (2) 4M x 36

      36MB         (2) 4M x 36     (2) 512K x 36

      36MB        (2) 512K x 36     (2) 4M x 36

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

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

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

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

      64MB         (2) 8M x 36          NONE

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

            DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1

      66MB         (2) 8M x 36     (2) 256K x 36

      66MB        (2) 256K x 36     (2) 8M x 36

      68MB         (2) 8M x 36     (2) 512K x 36

      68MB        (2) 512K x 36     (2) 8M x 36

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

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

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

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

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

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

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

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     256KB        (8) 32K x 8     (1) 8K x 8

     512KB        (8) 64K x 8    (1) 16K x 8

      1MB         (8) 128K x 8   (1) 32K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 JS2                  JS3

        256KB          Pins 1 & 2 closed   Pins 1 & 2 closed

        512KB          Pins 1 & 2 closed   Pins 2 & 3 closed

         1MB           Pins 2 & 3 closed   Pins 2 & 3 closed

                          CPU SPEED CONFIGURATION

         Speed                     JK1                      JR1

         75MHz                    Open                      Open

         90MHz              Pins 1 & 2 closed               Open

         100MHz             Pins 1 & 2, 3 & 4               Open
                                 closed

         120MHz             Pins 1 & 2 closed              Closed

  CPU VOLTAGE CONFIGURATION

    Voltage         JP12

     3.4v          Closed

     3.5v           Open

                DMA CONFIGURATION

   DMA       CP2       CP3       CP4       CP5

  DMA 1      Open    Closed     Open     Closed

  DMA 3     Closed    Open     Closed     Open

