READY 425, 433, & 466

NEC TECHNOLOGIES, INC.

Processor

80486SX/80487DX/80486DX/80486DX2

Processor Speed

25/33/50(internal)/66(internal) MHz

Chip Set

C & T

Max. Onboard DRAM

64MB

Cache

None

BIOS

NEC

Dimensions

330mm x 218mm

I/O Options

Fax/modem, floppy drive interface, IDE interface, multi-function connector (PS/2 mouse, PS/2 keyboard, power LED), parallel port, proprietary riser card, serial port, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

J1

External battery

JP9

IDE interface

J2

Speaker

JP11

Main board power connector

J7 & J8

Multi-function connector

P1

RJ11 modem interface

J10 & J11

Parallel port

P2

Proprietary riser card connection

JA-1

Serial port

P3

IDE interface LED

JP6

VGA port

P4

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»
Parallel port (P2) select LPT1/IRQ7 (378-37Fh)

JP13

pins 1 & 2 closed

Parallel port (P2) select LPT2/IRQ5 (278-27Fh)

JP13

pins 2 & 3 closed

»
Flash BIOS programable via network disabled

JP14

pins 1 & 2 closed

Flash BIOS programable via network enabled

JP14

pins 2 & 3 closed

»
Onboard video enabled

SW1/1

Off

Onboard video disabled

SW1/1

On

»
Floppy interface (J1) enabled

SW1/2

Off

Floppy interface (J1) disabled

SW1/2

On

»
System password enabled

SW1/3

Off

System password disabled & cleared

SW1/3

On

»
Flash BIOS write enabled

SW1/4

Off

Flash BIOS write disabled

SW1/4

On

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP12

»
80486SX PQFP

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486SX PGA

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

80487SX PGA

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX PGA

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX2 PGA

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Clock Speed

JP15

25/50i MHz

pins 1 & 2 closed

33/66i MHz

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

NONE

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

25MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

37MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

49MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

Processor	80486SX/80487DX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal) MHz
Chip Set	C & T
Max. Onboard DRAM	64MB
Cache	None
BIOS	NEC
Dimensions	330mm x 218mm
I/O Options	Fax/modem, floppy drive interface, IDE interface, multi-function connector (PS/2 mouse, PS/2 keyboard, power LED), parallel port, proprietary riser card, serial port, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	J1	External battery	JP9
IDE interface	J2	Speaker	JP11
Main board power connector	J7 & J8	Multi-function connector	P1
RJ11 modem interface	J10 & J11	Parallel port	P2
Proprietary riser card connection	JA-1	Serial port	P3
IDE interface LED	JP6	VGA port	P4

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Parallel port (P2) select LPT1/IRQ7 (378-37Fh)	JP13	pins 1 & 2 closed
	Parallel port (P2) select LPT2/IRQ5 (278-27Fh)	JP13	pins 2 & 3 closed
»	Flash BIOS programable via network disabled	JP14	pins 1 & 2 closed
	Flash BIOS programable via network enabled	JP14	pins 2 & 3 closed
»	Onboard video enabled	SW1/1	Off
	Onboard video disabled	SW1/1	On
»	Floppy interface (J1) enabled	SW1/2	Off
	Floppy interface (J1) disabled	SW1/2	On
»	System password enabled	SW1/3	Off
	System password disabled & cleared	SW1/3	On
»	Flash BIOS write enabled	SW1/4	Off
	Flash BIOS write disabled	SW1/4	On

CPU TYPE CONFIGURATION
Type		JP1	JP2	JP12
»	80486SX PQFP	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
	80486SX PGA	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
	80487SX PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
	80486DX PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
	80486DX2 PGA	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Clock Speed	JP15
25/50i MHz	pins 1 & 2 closed
33/66i MHz	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
5MB	(1) 1M x 36	(1) 256K x 36	NONE	NONE
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	NONE
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
9MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
13MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
17MB	(1) 4M x 36	(1) 256K x 36	NONE	NONE
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	NONE
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
21MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	NONE
22MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
25MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
33MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	NONE
34MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
37MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
49MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36