
ACER, INC.

ACERALTOS 900 (M7), M7

Device Type           Mainboard
Processor             Pentium
Processor Speed       75/90/100/120/133/150/166MHz
Chip Set              Unidentified
Video Chip Set        Unidentified
Maximum Onboard       192MB (EDO supported)
Memory
Maximum Video Memory  1MB
Cache                 256/512KB
BIOS                  Acer
Dimensions            330mm x 218mm
I/O Options           32-bit PCI slots (4), floppy drive interface, green
                      PC connector, IDE interface, SCSI interface, Wide
                      Ultra SCSI interface, parallel port, PS/2 mouse
                      port, serial ports (2), VGA interface, cache slot

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Serial port 1              CN1       VGA interface              CN13

  Serial port 2              CN2       Power LED & keylock        CN15

  5v power                   CN3       IDE interface              CN16

  3.3v power                 CN4       Speaker                    CN17

  Parallel port              CN5       Reset/turbo switch         CN18

  Floppy drive               CN6       Chassis fan power          FA1
  interface

  IDE interface LED          CN7       Chassis fan power          FA2

  LED connector             CN10       PS/2 mouse port            MS1

  SCSI-2 interface          CN11       32-bit PCI slots         PC1 - PC4

  Wide SCSI interface       CN12       Cache slot                 SL1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           CN8          Unidentified
      alter

     Factory configured - do not           CN9          Unidentified
      alter

     Termination switchable through        JP2        Pins 2 & 3 closed
      SCSI select utility

      Termination enabled                   JP2        Pins 1 & 2 closed

     SCSI select 16-bit                    JP6        Pins 1 & 2 closed

      SCSI select 8-bit                     JP6        Pins 2 & 3 closed

     BIOS type select Acer                 JP8        Pins 1 & 2 closed

      BIOS type select OEM                  JP8        Pins 2 & 3 closed

     Password disabled                     JP9        Pins 2 & 3 closed

      Password enabled                      JP9        Pins 1 & 2 closed

     Buzzer enabled                       JP10        Pins 1 & 2 closed

      External speaker enabled             JP10        Pins 2 & 3 closed

     Front panel reset enabled            JP11        Pins 1 & 2 closed

      Front panel reset disabled           JP11        Pins 2 & 3 closed

     Factory configured - do not          JP12        Pins 2 & 3 closed
      alter

                    SIMM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (2) 1M x 36        None          None

     16MB       (2) 1M x 36    (2) 1M x 36       None

     16MB       (2) 2M x 36        None          None

     24MB       (2) 2M x 36    (2) 1M x 36       None

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

     32MB       (2) 4M x 36        None          None

     32MB       (2) 2M x 36    (2) 2M x 36       None

     40MB       (2) 4M x 36    (2) 1M x 36       None

     48MB       (2) 4M x 36    (2) 2M x 36       None

                  SIMM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1          Bank 2

      48MB        (2) 4M x 36     (2) 1M x 36    (2) 1M x 36

      56MB        (2) 4M x 36     (2) 2M x 36    (2) 1M x 36

      64MB        (2) 8M x 36        None            None

      64MB        (2) 4M x 36     (2) 4M x 36        None

      80MB        (2) 8M x 36     (2) 2M x 36        None

      80MB        (2) 8M x 36     (2) 1M x 36    (2) 1M x 36

      88MB        (2) 8M x 36     (2) 2M x 36    (2) 1M x 36

      96MB        (2) 8M x 36     (2) 4M x 36        None

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

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

     104MB        (2) 8M x 36     (2) 4M x 36    (2) 1M x 36

     112MB        (2) 8M x 36     (2) 4M x 36    (2) 2M x 36

     128MB        (2) 8M x 36     (2) 4M x 36    (2) 4M x 36

     128MB       (2) 16M x 36        None            None

     128MB        (2) 8M x 36     (2) 8M x 36        None

     136MB        (2) 8M x 36     (2) 8M x 36    (2) 1M x 36

     136MB       (2) 16M x 36     (2) 1M x 36        None

     144MB       (2) 16M x 36     (2) 2M x 36        None

     144MB       (2) 16M x 36     (2) 1M x 36    (2) 1M x 36

     152MB       (2) 16M x 36     (2) 2M x 36    (2) 1M x 36

     160MB       (2) 16M x 36     (2) 4M x 36        None

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

     168MB       (2) 16M x 36     (2) 4M x 36    (2) 1M x 36

     176MB       (2) 16M x 36     (2) 4M x 36    (2) 2M x 36

     192MB       (2) 16M x 36     (2) 8M x 36        None

     192MB       (2) 16M x 36     (2) 4M x 36    (2) 4M x 36

  Note: Board accepts EDO memory.

                CACHE CONFIGURATION

           Size                      SL1

          256KB            256KB module installed

          512KB            512KB module installed

        CACHE JUMPER CONFIGURATION

        Size                 JP3

        256KB         Pins 1 & 2 closed

        512KB         Pins 2 & 3 closed

  VIDEO MEMORY CONFIGURATION

   Size     Bank 0    Bank 1

  512KB     512KB      None

   1MB      512KB      512KB

                            CPU SPEED SELECTION

  CPU speed    Clock speed    Multiplier      JP4        JP5       JP7

    75MHz         50MHz          1.5x        2 & 3      2 & 3     1 & 2

    90MHz         60MHz          1.5x        2 & 3      2 & 3     2 & 3

    100MHz        66MHz          1.5x        2 & 3      2 & 3     3 & 4

    120MHz        60MHz           2x         2 & 3      1 & 2     2 & 3

    133MHz        66MHz           2x         2 & 3      1 & 2     3 & 4

    150MHz        60MHz          2.5x        1 & 2      1 & 2     2 & 3

    166MHz        66MHz          2.5x        1 & 2      1 & 2     3 & 4

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

    Type          JP13          JP14           JP15             JP16

    P54C          Open         Closed         Closed        1 & 2, 3 & 4,
                                                           8 & 9, 10 & 11

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

               Voltage                                JP1

                    VR                         Pins 1 & 2 closed

                  VRE                         Pins 2 & 3 closed

