...because we can't all be on the bleeding edge...





486SH REV. 1.1

ADVANCED INTEGRATED RESEARCH, INC.

486SH REV. 1.1

Processor

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

Processor Speed

20/25/33/40/50(Internal)/50/66(Internal)MHz

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo switch

J5

Power LED & keylock

J2

Turbo LED

J6

Speaker

J3

32-bit VESA Local bus slots

S1, S2, & S3

Reset switch

J4

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome, VGA or EGA

JP7

Open

 

Monitor type select CGA

JP7

Closed

CMOS memory normal operation

JP10

pins 1 & 2 closed

 

CMOS memory clear

JP10

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x9

NONE

8MB

(4) 1M x9

(4) 1M x9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG/U36

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP20

JP21

64KB

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 1 & 2

128KB

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 2 & 3

256KB

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP15

JP16

JP18

JP19

486SX (PGA)

pins 2 & 3 closed

Open

Open

Closed

80486SX (PQFP)

pins 2 & 3 closed

Open

Open

Open

80487SX

pins 1 & 2 closed

pins 2 & 3 closed

Closed

Closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

ODP486SX

pins 1 & 2 closed

pins 2 & 3 closed

Closed

Closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

Pentium Overdrive

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

CPU SPEED CONFIGURATION

Speed

JP5

JP11

JP12

JP14

20MHz

Open

Open

Closed

pins 1 & 2 closed

25MHz

Closed

Closed

Open

pins 1 & 2 closed

33MHz

Closed

Open

Open

pins 1 & 2 closed

40MHz

Open

Closed

Open

pins 2 & 3 closed

50i MHz

Closed

Closed

Open

pins 1 & 2 closed

50MHz

Open

Open

Open

pins 2 & 3 closed

66i MHz

Closed

Open

Open

pins 1 & 2 closed