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POWERMATE 468/25E

NEC TECHNOLOGIES, INC.

POWERMATE 468/25E

Processor

80486DX

Processor Speed

25MHz

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

8/64KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card, floppy drive interface, external cache card,

parallel port, PS/2 mouse port, serial ports (2)

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

P1

Serial/Parallel/IO port connector

P10

External battery

P3

Drive power

P12

LED panel

P6

32-bit external memory card slot

SL1

Floppy drive interface

P7

External cache slot

SL2

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Floppy drive transfer rate 500/250/300/150/125 KB/sec

2D1

pins 1 & 2 closed

 

Floppy drive transfer rate 500/250/150 KB/sec

2D1

pins 2 & 3 closed

Factory configured - do not alter

2J1

Closed

Password enabled

5J2

pins 2 & 3 closed

 

Password disabled

5J2

pins 1 & 2 closed

A20 Gate select PAL

5J3

pins 1 & 2 closed

 

A20 Gate select keyboard controller

5J3

pins 2 & 3 closed

Keyboard controller W/R select PAL

5K3

pins 1 & 2 closed

 

Keyboard controller W/R select XIOWT

5K3

pins 2 & 3 closed

Keyboard controller input select 12MHz

5K4

pins 1 & 2 closed

 

Keyboard controller input select 8.33MHz

5K4

pins 2 & 3 closed

 

STBY signal for RTC select PWREN-0

6K3

pins 1 & 2 closed

 

STBY signal for RTC select PWREN+0

6K3

pins 2 & 3 closed

ROM self test disabled

8M2

Open

 

ROM self test enabled

8M2

Closed

Factory configured - do not alter

9E1

pins 2 & 3 closed

Factory configured - do not alter

9E2

pins 2 & 3 closed

RDY signal from MILK select DMY RDY

11B2

pins 1 & 2 closed

 

RDY signal from MILK select BRDY

11B2

pins 2 & 3 closed

C6 mode select cache

18F1

Open

 

C6 mode select normal

18F1

Closed

EISA to host write wait select 1 wait state

18F2

Open

 

EISA to host write wait select 0 wait state

18F2

Closed

Monitor type select color

SW1/1

On

 

Monitor type select monochrome

SW1/1

Off

Floppy drive interface address select primary (3F0 - 3F7h)

SW1/2

Off

 

Floppy drive interface address select secondary (370 - 377h)

SW1/2

On

Internal floppy drive interface enabled

SW1/3

On

 

Internal floppy drive interface disabled

SW1/3

Off

COM2 enabled

SW1/4

On

 

COM2 disabled

SW1/4

Off

COM1 enabled

SW1/5

On

 

COM1 disabled

SW1/5

Off

Parallel port enabled

SW1/6

On

 

Parallel port disabled

SW1/6

Off

NPU enabled

SW1/7

On

 

NPU disabled

SW1/7

Off

IRQ 12 select mouse

SW1/8

On

 

IRQ 12 select other

SW1/8

Off

Base memory select 640KB

SW1/9

Off

 

Base memory select 512KB

SW1/9

On

Factory configured - do not alter

SW1/10

On

TEST MODE CONFIGURATION

Test Mode

TEST

Off

Out

On

In

CPU SELF TEST CONFIGURATION

CPU testing

4D1

21D1

Disabled

pins 2 & 3 closed

pins 1 & 2 closed

Enabled

pins 1 & 2 closed

pins 2 & 3 closed

EISA TO HOST READ WAIT STATE CONFIGURATION

Total Wait States

18F3 (bit 0)

19F1 (bit 1)

0

Closed

Closed

1

Open

Closed

2

Closed

Open

3

Open

Open