OLIVETTI

M386/25 (BA247, BA255, BA263)

Processor                 80386DX
Processor Speed           25MHz
Chip Set                  Unidentified
Maximum Onboard Memory    18MB (8MB on external memory card)
Cache                     32KB
BIOS                      Unidentified
Dimensions                355mm x 305mm
I/O Options               External memory card, floppy drive interface, IDE
                          interface, parallel port, PS/2 mouse port, serial
                          port, VGA port
NPU Options               80387DX/3167

[Image]

                               CONNECTIONS

         Function           Label            Function            Label

  PS/2 mouse port            CN1      Floppy drive interface      CN5

  Parallel port              CN2      IDE interface               CN6

  Serial port                CN3      External memory card        SL1

  VGA port                   CN4

                        USER CONFIGURABLE SETTINGS

                 Setting                     Label           Position

  »   Factory configured - do not alter       J14             Closed

  »   CMOS memory normal operation            J27              Open

      CMOS memory clear                       J27             Closed

  »   Cache controller normal operation       J28              Open

      Cache controller using different        J28             Closed
      model that 82385

  »   NPU running at CPU speed                J30              Open

      NPU running at oscillator speed         J30             Closed

  »   BIOS EPROM enabled                      J32              Open

      BIOS EPROM disabled                     J32             Closed

                                   DRAM

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     2MB            1MB           1MB            None           None

     3MB            1MB           1MB        (4) 256K x 9       None

     4MB            1MB           1MB        (4) 256K x 9   (4) 256K x 9

     6MB            1MB           1MB         (4) 1M x 9        None

     7MB            1MB           1MB        (4) 256K x 9    (4) 1M x 9

     7MB            1MB           1MB         (4) 1M x 9    (4) 256K x 9

     10MB           1MB           1MB         (4) 1M x 9     (4) 1M x 9

                            CACHE SIZE

  Note: 32KB cache is factory installed and is not configurable.

                                SERIAL PORT

          Setting                    J11                     J12

     Normal operation                Open                   Open

      Indicated RS232               Closed                 Closed
      threshold level