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OPTI-495 SX CACHE

ARTEK COMPUTER SYSTEMS, INC.

OPTI-495 SX CACHE

   

Processor

80386DX/80486SX/80487SX/80486DX/80486DX2

Processor Speed

25/33/40/50(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

SRAM Cache

64/128/256KB

BIOS

AMI

Dimensions

235mm x 220mm

I/O Options

None

NPU Options

80387

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

Speaker

J4

Turbo switch

J2

Power LED & keylock

J5

Turbo LED

J3

External battery

J7

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

P1

pins 2 & 3 closed

 

CMOS memory clear

P1

pins 1 & 2 closed

Monitor type select color

P2

closed

 

Monitor type select monochrome

P2

open

Factory configured - do not alter

P28

open

Factory configured - do not alter

P39

open

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 x 9

NONE

5MB

(4) 1M x 9

(4) 256K x 9

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

SRAM CONFIGURATION

Size

Cache

Location

TAG

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

SRAM JUMPER CONFIGURATION

Size

P3

P5

P6

P7

P8

P9

64KB

pins 2 & 3 closed

open

open

open

open

open

128KB

pins 1 & 2 closed

closed

closed

closed

closed

closed

256KB

pins 2 & 3 closed

closed

closed

closed

closed

closed

CPU CONFIGURATION

CPU

P4

P25

P33

P100

80486 (PGA)

pins 2 & 3 closed

pins 1 & 2 closed

closed

pins 2 & 3 closed

80386 (PQFP)

pins 1 & 2 closed

pins 2 & 3 closed

open

pins 1 & 2 closed

80486 CPU CONFIGURATION

CPU

P12

P13

P14

80486DX/80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

closed

80487SX

pins 1 & 2 closed

pins 2 & 3 closed

closed

80487SX

pins 2 & 3 closed

pins 2 & 3 closed

open

CPU SPEED CONFIGURATION

Speed

CPU

P30

P31

P32

P97

66iMHz

80486

closed

open

closed

closed

50MHz

80486

closed

closed

open

closed

50iMHz

80486

open

closed

open

open

40MHz

80386

open

open

closed

closed

33MHz

80486

closed

closed

open

open

33MHz

80386

closed

closed

open

closed

25MHz

80486

closed

open

closed

open