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PowerMate Express 486/50e

NEC TECHNOLOGIES, INC.

PowerMate Express 486/50e

Processor

80486DX

Processor Speed

50MHz

Chip Set

Intel

Max. Onboard DRAM

16MB

SRAM Cache

128KB (on CPU module)

BIOS

NEC (Flash EEPROM)

Dimensions

330.2mm x 218.4mm

I/O Options

Proprietary CPU module slot, keyboard/bus mouse interface,

serial ports (2), parallel port, video port, proprietary video card sockets,

32-bit external memory card slot, IDE interface, floppy drive interface

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary CPU module

J6

Video port

P6

32-bit external memory card

J7

Keyboard/Bus mouse interface

P7

Proprietary video card

J8, J9, & J10

Fan power

P8

IDE interface

P1

IDE interface LED

P9

Floppy drive interface

P2

External battery

P10

Parallel port

P3

Power supply

P11 & P12

Serial port (COM1)

P4

Drive power

P13

Serial port (COM2)

P5

Drive power

P14

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Password enabled

3F1

Pins 2 & 3 closed

 

Password disabled

3F1

Pins 1 & 2 closed

Test mode disabled

10A1

Open

 

Test mode enabled

10A1

Closed

I/O recovery disabled

11B5

Open

 

I/O recovery enabled

11B5

Closed

NEC VGA adapter disabled (U.S. setting)

15A1

Open

 

NEC VGA adapter enabled

15A1

Closed

Parallel port (P3) configuration LPT1/IRQ7, LPT2/IRQ5

15C3

Pins 1 & 2 closed Pins 5 & 6 closed

 

Parallel port (P3) configuration LPT1/IRQ5, LPT2/IRQ7

15C3

Pins 2 & 3 closed Pins 4 & 5 closed

Manufacturing test loop disabled

15K1

Closed

 

Manufacturing test loop enabled

15K1

Open

BIOS flash reprogramming disabled

17H1

Pins 2 & 3 closed

 

BIOS flash reprogramming enabled

17H1

Pins 1 & 2 closed

ROM type select 27C256 (28F256)

18F1

Pins 1 & 2 closed

 

ROM type select 27C512 (28F512)

18F1

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(2) 256K x 36

(2) 256K x 36

8MB

(2) 1M x 36

NONE

16MB

(2) 1M x 36

(2) 1M x 36

SRAM CONFIGURATION

Notes:The CPU card comes standard with 128KB of cache and is not alterable. The locations of the cache chips are unknown.