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  | 
| 
 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 model that 82385  | 
 J28  | 
 Closed  | |
| 
 »  | 
 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  |