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# OLIVETTI
M386/25 (BA247, BA255, BA263)
Processor 80386DX
Processor Speed 25MHz
Chip Set Unidentified
Maximum Onboard 18MB (8MB on external memory card)
Memory
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
IMG IMG 1
+------------------------------------------------------------+
| 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 threshold level | Closed | Closed |
+------------------------------------------------------------+