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M386/25 (BA247, BA255, BA263)

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