
DIGITAL EQUIPMENT CORPORATION

PC 3100

Device Type       Mainboard
Processor         AM K5/AM K6/Pentium
Processor Speed   90/120/133/150/166/200/233/266/300/333/366MHz
Chip Set          Intel
Video Chip Set    S3
Maximum Onboard   256MB (SDRAM supported)
Memory
Maximum Video     4MB
Memory
Cache             256/512KB
BIOS              Unidentified
Dimensions        254mm x 218mm
I/O Options       Ethernet 10BaseT connector, parallel port, PS/2 mouse
(mainboard)       port, serial ports (2), VGA feature connector, VGA port,
                  USB connectors (2), VRM connector
I/O Options       IDE interfaces (2), floppy drive interface, audio in 
(backplane)       CD-ROM, fax/modem connector 32-bit PCI slots (2 or 3)
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port                CN1       Ethernet 10BaseT           CN6
                                       connector

  VGA port                   CN2       Parallel port              CN7

  USB connector              CN3       VGA feature connector      CN8

  USB connector              CN4       VRM connector              VRM

  PS/2 mouse port            CN5

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Password normal operation              SW1/2             Off

      Password clear                         SW1/2              On

     BIOS normal operation                  SW1/3             Off

      BIOS recovery mode                     SW1/3              On

     CMOS memory normal operation           SW1/4             Off

      CMOS memory clear                      SW1/4              On

     BIOS write disabled                    SW1/5             Off

      BIOS write enabled                     SW1/5              On

                    DIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

     16MB       (1) 2M x 64        None          None

     16MB       (1) 1M x 64    (1) 1M x 64       None

     24MB       (1) 2M x 64    (1) 1M x 64       None

     24MB       (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 4M x 64        None          None

     32MB       (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

     32MB       (1) 2M x 64    (1) 2M x 64       None

     40MB       (1) 4M x 64    (1) 1M x 64       None

     40MB       (1) 2M x 64    (1) 2M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 1M x 64    (1) 1M x 64

     48MB       (1) 4M x 64    (1) 2M x 64       None

     48MB       (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

     56MB       (1) 4M x 64    (1) 2M x 64    (1) 1M x 64

     64MB       (1) 8M x 64        None          None

     64MB       (1) 4M x 64    (1) 2M x 64    (1) 2M x 64

                  DIMM CONFIGURATION (CONT)

      Size          Bank 0          Bank 1          Bank 2

      64MB        (1) 4M x 64     (1) 4M x 64        None

      72MB        (1) 8M x 64     (1) 1M x 64        None

      72MB        (1) 4M x 64     (1) 4M x 64    (1) 1M x 64

      80MB        (1) 8M x 64     (1) 1M x 64    (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64        None

      80MB        (1) 4M x 64     (1) 4M x 64    (1) 2M x 64

      88MB        (1) 8M x 64     (1) 2M x 64    (1) 1M x 64

      96MB        (1) 8M x 64     (1) 2M x 64    (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64        None

      96MB        (1) 4M x 64     (1) 4M x 64    (1) 4M x 64

     104MB        (1) 8M x 64     (1) 4M x 64    (1) 1M x 64

     112MB        (1) 8M x 64     (1) 4M x 64    (1) 2M x 64

     128MB       (1) 16M x 64        None            None

     128MB        (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

     128MB        (1) 8M x 64     (1) 8M x 64        None

     136MB       (1) 16M x 64     (1) 1M x 64        None

     136MB        (1) 8M x 64     (1) 8M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64        None

     144MB        (1) 8M x 64     (1) 8M x 64    (1) 2M x 64

     152MB       (1) 16M x 64     (1) 2M x 64    (1) 1M x 64

     160MB       (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64        None

     160MB        (1) 8M x 64     (1) 8M x 64    (1) 4M x 64

     168MB       (1) 16M x 64     (1) 4M x 64    (1) 1M x 64

     176MB       (1) 16M x 64     (1) 4M x 64    (1) 2M x 64

     192MB       (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64        None

     192MB        (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

     200MB       (1) 16M x 64     (1) 8M x 64    (1) 1M x 64

     208MB       (1) 16M x 64     (1) 8M x 64    (1) 2M x 64

     224MB       (1) 16M x 64     (1) 8M x 64    (1) 4M x 64

     256MB       (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

            Note: Board accepts SDRAM memory.

      CACHE CONFIGURATION

      Size          Bank 0

     256KB       (2) 32K x 32

     512KB       (2) 64K x 32

                        VIDEO MEMORY CONFIGURATION

            Note: 2MB video memory is factory installed and is not
            configurable. To increase to 4MB, install upgrade module at
            CN9.

                        CPU SPEED SELECTION (AM K5)

    CPU       Clock    Multiplier     SW1/1    SW1/6     SW1/7     SW1/8
   speed     speed

   90MHz     60MHz        1.5x         Off      Off       Off       Off

  120MHz     60MHz         2x          Off      Off       On        Off

  133MHz     66MHz         2x          On       Off       On        Off

  150MHz     60MHz        2.5x         Off      Off       On        On

  166MHz     66MHz        2.5x         On       Off       On        On

  200MHz     66MHz         3x          On       Off       Off       On

                        CPU SPEED SELECTION (AM K6)

    CPU       Clock    Multiplier     SW1/1    SW1/6     SW1/7     SW1/8
   speed     speed

  166MHz     66MHz        2.5x         On       Off       On        On

  200MHz     66MHz         3x          On       Off       Off       On

  233MHz     66MHz        3.5x         On       Off       Off       Off

  266MHz     66MHz         4x          On        On       On        Off

  300MHz     66MHz        4.5x         On        On       On        On

  333MHz     66MHz         5x          On        On       Off       On

  366MHz     66MHz        5.5x         On        On       Off       Off

                        CPU SPEED SELECTION (INTEL)

    CPU       Clock    Multiplier     SW1/1    SW1/6     SW1/7     SW1/8
   speed     speed

   90MHz     60MHz        1.5x         Off      Off       Off       Off

  120MHz     60MHz         2x          Off      Off       On        Off

  133MHz     66MHz         2x          On       Off       On        Off

  150MHz     60MHz        2.5x         Off      Off       On        On

  166MHz     66MHz        2.5x         On       Off       On        On

  200MHz     66MHz         3x          On       Off       Off       On

                      CPU SPEED SELECTION (INTEL MMX)

    CPU       Clock    Multiplier     SW1/1    SW1/6     SW1/7     SW1/8
   speed     speed

  166MHz     66MHz        2.5x         On       Off       On        On

  200MHz     66MHz         3x          On       Off       Off       On

  233MHz     66MHz        3.5x         On       Off       Off       Off

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  IDE interface 1            CN1       Control panel              CN7
                                       connector

  IDE interface 2            CN2       Chassis fan power          CN8

  Floppy drive               CN3       SCSI interface LED         CN9
  interface

  Audio rear panel           CN4       Micro switch               CN10
  connector                            connector

  Audio in  CD-ROM          CN5       Main logic board           CN11
                                       connector

  Fax/modem connector        CN6       32-bit PCI slots        PC1  PC2

  Note: A power connector is located on the reverse side of this card.

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Micro switch               CN1       Control panel              CN7
  connector                            connector

  IDE interface 1            CN2       Fax/modem connector        CN8

  IDE interface 2            CN3       Audio in  CD-ROM          CN9

  Floppy drive               CN4       Audio rear panel           CN10
  interface                            connector

  SCSI interface LED         CN5       Main logic board           CN11
                                       connector

  Chassis fan power          CN6       32-bit PCI slots        PC1  PC3

