HwMuseum | Index

NEC TECHNOLOGIES, INC.

PowerMate 386/25S

Processor

80386DX

Processor Speed

25MHz

Chip Set

Headland

Max. Onboard DRAM

16MB (on system memory card)

Cache

32KB

Dimensions

330.2mm x 218.4mm

BIOS

Phoenix

I/O Options

Keyboard/Bus mouse interface card socket, serial port, parallel port, VGA port, proprietary video card sockets, proprietary system memory card slot

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary system memory card

J2

Keyboard/Bus mouse interface

P2

Speaker

J3

Parallel port

P11

Proprietary video card

J4, J5, & J6

Serial port

P12

Riser Card

J7

VGA port

P13

Drive power

J20

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Cache enabled

JP2

Closed

 

Cache disabled

JP2

Open

»

Keyboard gate select 8742/8042

JP8 & JP9

Pins 1 & 2 closed

 

Keyboard gate select fast A20

JP8 & JP9

Pins 2 & 3 closed

»

Keyboard controller test disabled

JP111

Open

 

Keyboard controller test enabled

JP111

Closed

»

Password enabled

JP112

Closed

 

Password disabled

JP112

Open

»

Test mode disabled

SW1

Open

 

Test mode enabled

SW1

Closed

»

Serial port enabled

SW3/switch 3

Closed

 

Serial port disabled

SW3/switch 3

Open

»

Parallel port enabled

SW3/switch 5

Closed

 

Parallel port disabled

SW3/switch 5

Open

»

Floppy drive interface enabled

SW3/switch 6

Closed

 

Floppy drive interface disabled

SW3/switch 6

Open

»

Floppy drive I/O port select first

SW3/switch 7

Open

 

Floppy drive I/O port select second

SW3/switch 7

Closed

»

Monitor type select monochrome

SW3/switch 8

Open

 

Monitor type select color

SW3/switch 8

Closed

»

IDE interface disabled

SW3/switch 9

Open

 

IDE interface enabled

SW3/switch 9

Closed

»

Bus mouse port disabled

SW3/switch 10

Open

 

Bus mouse port enabled

SW3/switch 10

Closed

CACHE CONFIGURATION

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

NPU CONFIGURATION

Type

JP6

SW3/1

Disabled

Pins 1 & 2 closed

Off

3167

Pins 2 & 3 closed

Off

80387

Pins 2 & 3 closed

On

SERIAL PORT CONFIGURATION

Setting

JP20

SW3/4

COM1/IRQ4

Pins 2 & 3 closed

Off

COM2/IRQ3

Pins 1 & 2 closed

On

VIDEO CARD CONFIGURATION

Setting

JP113

SW3/2

Enabled

Open

On

Disabled

Closed

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(8) 256K x 9

NONE

4MB

(8) 256K x 9

(8) 256K x 9

8MB

(8) 1M x 9

NONE

10MB

(8) 256K x 9

(8) 1M x 9

16MB

(8) 1M x 9

(8) 1M x 9

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

2MB

Off

Off

Off

Off

4MB

Off

Off

On

Off

8MB

Off

On

Off

Off

10MB

Off

On

On

Off

16MB

On

Off

Off

Off

Note:SW1/4 is not used.