
ABIT COMPUTER CORPORATION

PN5

Processor          CX M1/Pentium
Processor Speed    75/90/100/120/133/150/166/180/200MHz
Chip Set           Unidentified
Maximum Onboard    128MB
Memory
Cache              256/512KB
BIOS               Unidentified
Dimensions         330mm x 218mm
I/O Options        32-bit PCI slots (4), floppy drive interface, green PC
                   connector, IDE interfaces (2), parallel port, PS/2 mouse
                   port, serial ports (2), cache slot, IR connector, USB
                   connector
NPU Options        None

[Image]

                                CONNECTIONS

       Function            Label            Function             Label

  Serial port 1             CN1        Speaker                J7 pins 7 -
                                                                  10

  Serial port 2             CN2        Reset switch            J7 pins 11
                                                                 - 12

  Parallel port             CN3        Green PC connector      J7 pins 14
                                                                 - 15

  Floppy drive              CN4        Turbo LED               J7 pins 16
  interface                                                      & 17

  IDE interface 2           CN5        Green PC LED               J8

  IDE interface 1           CN6        IR connector               JP2

  PS/2 mouse port            J3        USB connector             JP28

  IDE interface LED          J6        32-bit PCI slots        PC1 - PC3

  Power LED & keylock     J7 pins 1    Cache slot                 SL1
                            - 5

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

     DRAM refresh rate select 66MHz            DS1           Closed

      DRAM refresh rate select 60MHz            DS1            Open

     Factory configured - do not alter         JP1             N/A

                       DRAM

      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

      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

                DRAM (CONT)

     Size          Bank 0        Bank 1

     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 SIZE

      Size            Bank 0            SL1              TAG

      256KB        (2) 32K x 32    Not installed     (1) 32K x 8

      512KB        (2) 32K x 32      Installed       (1) 32K x 8

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

              CACHE JUMPER

   Size      JP5       JP6      JP20

  256KB      Open     Open      Open

  512KB     Closed   Closed    Closed

                       CPU SPEED (PENTIUM)

  Setting      DS2        DS3        DS4        DS5       DS6

   75MHz      Open      Closed     Closed      Open       Open

   90MHz     Closed     Closed      Open       Open       Open

  100MHz     Closed      Open      Closed      Open       Open

  120MHz     Closed     Closed      Open      Closed      Open

  133MHz     Closed      Open      Closed     Closed      Open

  150MHz     Closed     Closed      Open      Closed     Closed

  166MHz     Closed      Open      Closed     Closed     Closed

  180MHz     Closed     Closed      Open       Open      Closed

  200MHz     Closed      Open      Closed      Open      Closed

                       CPU SPEED (CYRIX)

  Setting     DS2        DS3       DS4        DS5       DS6

  120MHz      Open     Closed     Closed     Closed     Open

  133MHz     Closed     Open       Open      Closed     Open

  150MHz     Closed    Closed      Open      Closed     Open

  166MHz      Open      Open      Closed     Closed     Open

                                CPU VOLTAGE

                Setting                               JP23

                   3.3v                         Pins 2 & 5 closed

                  3.45v                        Pins 3 & 6 closed

                   3.6v                         Pins 1 & 4 closed

  Note: The location of pin 1 is unidentified.

