
OLIVETTI

M6-420/440/450/460/ (BA200X)

Processor         80486SX/80487SX/80486DX/80486DX2/P24T
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          Unidentified
Maximum Onboard   100MB
Memory
Cache             256KB
BIOS              Unidentified
Dimensions        330mm x 218mm
I/O Options       Floppy drive interface, IDE interface, parallel port,
                  PS/2 mouse port, serial ports (2), VGA feature
                  connector, VGA port, cache slot, riser slot, audio board
                  connector
NPU Options       None

[Image]

                               CONNECTIONS

         Function           Label            Function            Label

  PS/2 mouse port            CN1      Floppy drive interface      CN9

  Parallel port              CN2      Chassis fan power            J1

  Serial port 1              CN3      Speaker                      J2

  Serial port 2              CN4      External battery             J3

  VGA port                   CN5      Reset switch                JP7

  VGA feature connector      CN6      Cache slot                  SL1

  Audio board connector      CN7      Riser slot                  SL2

  IDE interface              CN8

  Note: The location of pin 1 on the connectors is unidentified.

                        USER CONFIGURABLE SETTINGS

                 Setting                     Label           Position

     CMOS memory normal operation            JP6              Open

      CMOS memory clear                       JP6           Pins 2 & 3
                                                              closed

      System normal operation                 JP7              Open

      System reset                            JP7             Closed

     87311/12 address select 398 - 399      SW1/1             Off

      87311/12 address select 26E - 26F      SW1/1              On

     Setup access enabled                   SW1/2             Off

      Setup access disabled                  SW1/2              On

     Bootstrap from serial port             SW1/3             Off
      enabled

      Bootstrap from serial port             SW1/3              On
      disabled

     Flash BIOS write disabled              SW1/4             Off

      Flash BIOS write enabled               SW1/4              On

     Floppy drive write enabled             SW1/5             Off

      Floppy drive write disabled            SW1/5              On

     RAMDAC write enabled                   SW1/6             Off

      RAMDAC write disabled                  SW1/6              On

      On board video enabled                 SW1/7             Off

      On board video disabled                SW1/7              On

  Note: The location of pin 1 on SW1 is unidentified.

                                  DRAM

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     4MB            4MB           None           None          None

     8MB            4MB       (1) 1M x 36        None          None

     12MB           4MB       (1) 2M x 36        None          None

     12MB           4MB       (1) 1M x 36    (1) 1M x 36       None

     16MB           4MB       (1) 2M x 36    (1) 1M x 36       None

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

     16MB           4MB       (1) 1M x 36    (1) 2M x 36       None

     20MB           4MB       (1) 4M x 36        None          None

     20MB           4MB       (1) 2M x 36    (1) 1M x 36    (1) 1M x 36

                              DRAM (CONT)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     20MB           4MB       (1) 2M x 36    (1) 2M x 36       None

     24MB           4MB       (1) 4M x 36    (1) 1M x 36       None

     24MB           4MB       (1) 1M x 36    (1) 2M x 36    (1) 2M x 36

     24MB           4MB       (1) 1M x 36    (1) 4M x 36       None

     28MB           4MB       (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     28MB           4MB       (1) 4M x 36    (1) 2M x 36       None

     28MB           4MB       (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     28MB           4MB       (1) 2M x 36    (1) 4M x 36       None

     36MB           4MB       (1) 8M x 36        None          None

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

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

     40MB           4MB       (1) 8M x 36    (1) 1M x 36       None

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

     40MB           4MB       (1) 1M x 36    (1) 8M x 36       None

     44MB           4MB       (1) 8M x 36    (1) 1M x 36    (1) 1M x 36

     44MB           4MB       (1) 8M x 36    (1) 2M x 36       None

     44MB           4MB       (1) 2M x 36    (1) 4M x 36    (1) 4M x 36

     44MB           4MB       (1) 2M x 36    (1) 8M x 36       None

     52MB           4MB       (1) 8M x 36    (1) 2M x 36    (1) 2M x 36

     52MB           4MB       (1) 8M x 36    (1) 4M x 36       None

     52MB           4MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     52MB           4MB       (1) 4M x 36    (1) 8M x 36       None

     70MB           4MB       (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

     70MB           4MB       (1) 8M x 36    (1) 8M x 36       None

     72MB           4MB       (1) 1M x 36    (1) 8M x 36    (1) 8M x 36

     76MB           4MB       (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

     84MB           4MB       (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

    100MB           4MB       (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

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

        CACHE SIZE

    Size         SL1

    256KB     Installed

      CPU SPEED

  Setting    SW1/8

   25MHz      Off

   33MHz       On

  50iMHz      Off

  66iMHz       On

                                DMA CHANNEL

    Setting         JP9            JP10          JP11            JP12

     DMA0        Pins 1 & 2        N/A         Pins 1 & 2        N/A
                   closed                       closed

     DMA1           N/A         Pins 1 & 2        N/A         Pins 1 & 2
                                  closed                        closed

     DMA5        Pins 2 & 3        N/A         Pins 2 & 3        N/A
                   closed                       closed

          VIDEO MEMORY

      Size          Bank 0

      None           None

      1MB        (4) 256K x 8

