
ATC/UNITRON COMPUTER & COMPUTER PARTS

U 6983

Processor           Pentium
Processor Speed     75/90/100/120/133/150MHz
Chip Set            Unidentified
Max. Onboard DRAM   256MB
Cache               256/512/1024KB
BIOS                Award
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 interface, serial ports (2), cache slot
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                Location     Purpose                  Location

  Turbo LED                 J1        Parallel port              J12

  Turbo switch              J2        Serial port 2              J13

  Reset switch              J3        IDE interface LED 2        J14

  Speaker                   J4        IDE interface LED 1        J15

  Power LED & keylock       J5        IR connector               JP32

  Green PC connector        J6        PS/2 mouse interface       MS2
                                      (optional)

  IDE interface 2           J7        32-bit PCI slots        PC1 - PC4

  IDE interface 1           J8        Chassis fan power          PS1

  Serial port 1             J10       Cache slot                 SL1

  Floppy drive              J11
  interface

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            JP5           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP5           pins 2 & 3
                                                              closed

     Factory configured - do not             JP8              N/A
      alter

     Factory configured - do not             JP10             N/A
      alter

     BIOS type select EPROM                  JP13             Open

      BIOS type select 5v flash               JP13          pins 1 & 2
                                                              closed

      BIOS type select 12v flash              JP13          pins 2 & 3
                                                              closed

     Factory configured - do not             JP19             N/A
      alter

     Factory configured - do not             JP22             N/A
      alter

     Factory configured - do not             JP23             N/A
      alter

     Factory configured - do not             JP30             N/A
      alter

                DRAM CONFIGURATION

      Size          Bank 0/0A          Bank 1

      1MB*        (1) 256K x 36         NONE

      2MB*        (1) 512K x 36         NONE

      4MB*         (1) 1M x 36          NONE

      8MB*         (1) 2M x 36          NONE

      16MB*        (1) 4M x 36          NONE

      32MB*        (1) 8M x 36          NONE

      64MB*        (1) 16M x 36         NONE

       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

            DRAM CONFIGURATION (CON'T)

      Size           Bank 0/0A          Bank 1

      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

      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

      128MB        (2) 16M x 36          NONE

      130MB        (2) 16M x 36     (2) 256K x 36

      132MB        (2) 16M x 36     (2) 512K x 36

      136MB        (2) 16M x 36      (2) 1M x 36

      144MB        (2) 16M x 36      (2) 2M x 36

      160MB        (2) 16M x 36      (2) 4M x 36

      192MB        (2) 16M x 36      (2) 8M x 36

      256MB        (2) 16M x 36      (2) 16M x 36

  Note: Sizes with an * present use only Bank 0A.

                        CACHE CONFIGURATION

      Size            Bank 0            TAG              SL1

    256KB (A)      (8) 32K x 8      (1) 16K x 8     Not installed

    256KB (B)          NONE             NONE          Installed

    512KB (A)      (8) 64K x 8      (1) 16K x 8     Not installed

    512KB (B)          NONE             NONE          Installed

       1MB         (8) 128K x 8     (1) 32K x 8     Not installed

                        CACHE JUMPER CONFIGURATION

         Size                     JP8                      JP10

         256KB             pins 1 & 2 closed         pins 2 & 3 closed

         512KB              pins 1 & 2, 3 & 4              Open
                                 closed

          1MB              pins 2 & 3 closed         pins 1 & 2 closed

  Note: If SL1 is used, these jumpers are ignored.

                CPU SPEED CONFIGURATION

           Speed                       JP16

           75MHz                       Open

           90MHz                 pins 1 & 2 closed

           100MHz            pins 1 & 2, 3 & 4 closed

           120MHz                pins 1 & 2 closed

           133MHz            pins 1 & 2, 3 & 4 closed

           150MHz                pins 1 & 2 closed

   CPU SPEED CONFIGURATION

  Speed      JP9      JP12

   1.5x     Open      Open

    2x      Closed    Open

   2.5x     Closed   Closed

                         CPU VOLTAGE CONFIGURATION

                Voltage                                JP17

                   3.3v                        pins 1 & 2 closed

                   3.4v                        pins 2 & 3 closed

                  3.55v                        pins 4 & 5 closed

                   DMA CONFIGURATION

            DMA                        JP29

           DMA 1             pins 1 & 3, 2 & 4 closed

           DMA 3             pins 3 & 5, 4 & 6 closed

