Processor

80486DX

Processor Speed

33MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J10

32-bit external memory card

S1

Power LED & keylock

J23

Reset switch

SW1

Speaker

J24

Turbo switch

SW2

Turbo LED

JP12

USER CONFIGURABLE SETTINGS

»

Monitor type select color

JP1

Closed

Monitor type select monochrome

JP1

Open

»

CMOS memory normal operation

JP2

pins 2 & 3 closed

CMOS memory clear

JP2

pins 1 & 2 closed

»

Bus speed select iOSC/4

JP3

Open

Bus speed select iOSC/6

JP3

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

TAG (U33)

TAG (U34)

64KB

(8) 8K x 8

(1) 32K x 1

(1) 8K x 8

256KB

(8) 32K x 8

(1) 32K x 1

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP8

JP9

JP10

JP11

64KB

Open

Open

Open

Open

256KB

Closed

Closed

Open

Closed

CPU TYPE CONFIGURATION

Type

JP5

JP6

JP7

80486SX

Open

pins 2 & 3 closed

Open

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

Closed

80486DX

pins 2 & 3 closed

pins 1 & 2 closed

Closed