PREFERRED 462 PCI/VL ESP, MB-4862 Motherboard Settings and Configuration

Processor

80486SX/80487SX/CX486M7/80486DX/80486DX2/80486DX4/ Pentium Overdrive

Processor Speed

8/16/25/33/40/50(internal)/50/66(internal)100(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2), 32-bit PCI slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

JP17

Turbo switch

JP48 pins 3 & 4

IDE interface LED

JP45

External battery

JP49

Speaker

JP46

32-bit PCI slots

PC1 - PC3

Front panel connector

JP47

32-bit VESA local bus slots

SL1 & SL2

Reset switch

JP48 pins 1 & 2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

J10

N/A

»

Factory configured - do not alter

JP7

N/A

»

Local bus type select synchronous

JP9

pins 1 & 2 closed

Local bus type select asynchronous

JP9

pins 2 & 3 closed

PCI bus type select synchronous

JP11

pins 2 & 3 closed

PCI bus type select asynchronous

JP11

pins 1 & 2 closed

»

Factory configured - do not alter

JP12

N/A

»

Factory configured - do not alter

JP13

N/A

»

Factory configured - do not alter

JP19

N/A

»

Factory configured - do not alter

JP20

N/A

»

Factory configured - do not alter

JP23

N/A

»

Factory configured - do not alter

JP26

N/A

»

Factory configured - do not alter

JP27

N/A

»

Factory configured - do not alter

JP40

N/A

»

Factory configured - do not alter

JP90

N/A

»

Factory configured - do not alter

JP1106

N/A

»

Factory configured - do not alter

JP1108

N/A

»

Factory configured - do not alter

JP1109

N/A

»

Factory configured - do not alter

JP1111

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

6MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

NONE

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

NONE

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

DRAM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

64MB

(1) 16M x 36

NONE

NONE

NONE

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

NONE

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 16M x 36

(1) 16M x 36

NONE

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8 or (1) 32K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

Note: The orientation of Bank 0 & 1 is unidentified.

CACHE JUMPER CONFIGURATION

Size

jp24

jp29

JP32

JP33

64KB

Open

Open

pins 2 & 3 closed

pins 2 & 3 closed

128KB

Open

Closed

pins 1 & 2 closed

pins 1 & 2 closed

256KB

Closed

Closed

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP17

JP28

JP34

JP37

JP38

JP39

80486SX

N/A

Open

Open

N/A

N/A

1 & 2

80487SX

N/A

Open

1 & 2

2 & 3

1 & 2

1 & 2

CX486M7

N/A

Closed

2 & 3

N/A

2 & 3

2 & 3

80486DX

Closed

Open

2 & 3

2 & 3

1 & 2

1 & 2

80486DX2

Closed

Open

2 & 3

2 & 3

1 & 2

1 & 2

80486DX4

Closed

Open

2 & 3

2 & 3

1 & 2

2 & 3

P24T

N/A

Open

N/A

N/A

N/A

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON'T)

Type

JP41

JP43

JP44

JP1101

JP1102

80486SX

N/A

N/A

2 & 3

Closed

Closed

80487SX

N/A

N/A

1 & 2, 3 & 4

Closed

Closed

CX486M7

N/A

2 & 4

N/A

Open

Open

80486DX

Closed

N/A

1 & 2, 3 & 4

Closed

Closed

80486DX2

Closed

N/A

1 & 2, 3 & 4

Closed

Closed

80486DX4

Closed

N/A

1 & 2, 3 & 4

Open

Open

P24T

N/A

N/A

N/A

Closed

Closed

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP35

8MHz

Open

16MHz

pins 3 & 4 closed

25MHz

pins 1 & 2 closed

33MHz

pins 1 & 2, 5 & 6 closed

40MHz

pins 1 & 2, 3 & 4 closed

50iMHz

pins 1 & 2 closed

50MHz

pins 1 & 2, 3 & 4, 5 & 6 closed

66iMHz

pins 1 & 2, 5 & 6 closed

100iMHz

pins 1 & 2, 5 & 6 closed

CPU SPEED CONFIGURATION (CYRIX ONLY)

Setting

JP1110

Internal clock doubled

Closed

Internal clock standard

Open

VL BUS WAIT STATE CONFIGURATION

Wait states

JP21

0 wait states

Open

1 wait state

Closed

VL BUS SPEED CONFIGURATION

CPU speed

JP22

JP31

<= 33MHz

Open

pins 1 & 2 closed

> 33MHz

pins 1 & 2 closed

Open

FLASH BIOS CONFIGURATION

Setting

JP16

JP1107

»

Disabled

pins 2 & 3 closed

pins 1 & 2 closed

»

Enabled

pins 1 & 2 closed

pins 2 & 3 closed