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486S

UNIDENTIFIED

486S

Processor

80486SX

Processor Speed

25MHz

Chip Set

OPTI

Max. Onboard DRAM

8MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-Bit external DRAM/SRAM card slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Reset switch 2

J12

Power LED & keylock

J10

Reset switch 1

J13

Speaker

J11

32-Bit external DRAM/SRAM card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

J2

pins 1 & 2 closed

 

CMOS memory clear

J2

pins 2 & 3 closed

Monitor type select color

J3

Closed

 

Monitor type select monochrome

J3

Open

Reset select J13 (Reset 1)

J5

pins 1 & 2 closed

 

Reset select J12 (Reset 2)

J5

pins 2 & 3 closed

Factory configured - do not alter

J6

pins 1 & 2 closed

Note:Consult documentation provided with memory card for configurations.

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

CACHE CONFIGURATION

Setting

J8

J9

Not installed

Closed

Closed

Installed

Open

Open