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PMS486DS

UNIDENTIFIED

PMS486DS

Processor

80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330.2mm x 218.4mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J3

Speaker

J18

Turbo switch

J16

Power LED & keylock

J19

Reset switch

J17

Turbo LED

J20

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

J4

pins 2 & 3 closed

 

CMOS memory clear

J4

pins 1 & 2 closed

Monitor type select color

J5

closed

 

Monitor type select monochrome

J5

open

CPU speed select iOSC/2

J9

pins 2 & 3 closed

 

CPU speed select iOSC

J9

pins 1 & 2 closed

 

Bus speed select ATCLK/6

J10

closed

 

Bus speed select ATCLK/4

J10

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) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Cache CACHE

Location

TAG (U42)

TAG (U55)

64KB

(8) 8K x 8

Bank 0

(1) 64K x 1

(1) 8K x 8

128KB

(16) 8K x 8

Banks 0 & 1

(1) 64K x 1

(1) 8K x 8

256KB

(8) 32K x 8

Bank 0

(1) 64K x 1

(1) 32K x 8

512KB

(16) 32K x 8

Banks 0 & 1

(1) 64K x 1

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J11

J12

J13

J14

J15

64KB

open

open

open

open

pins 2 & 3 closed

128KB

open

open

closed

closed

pins 2 & 3 closed

256KB

open

closed

closed

closed

pins 2 & 3 closed

512KB

closed

closed

closed

closed

pins 1 & 2 closed

CPU JUMPER CONFIGURATION

CPU

J6

J7

J8

80486DX

pins 1 & 2 closed

closed

pins 2 & 3 closed

80487SX

pins 2 & 3 closed

closed

pins 2 & 3 closed

80486SX

open

open

pins 1 & 2 closed