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