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386 SIS CACHE

UNIDENTIFIED

386 SIS CACHE

Processor

80386

Processor Speed

25/33MHz

Chip Set

SIS

Video Chip Set

None

Maximum Onboard Memory

16MB (8MB on external memory card)

Maximum Video Memory

None

Cache

32/64/128KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

External memory card

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo LED

JP23

Speaker

JP20

External memory card

SL1

Power LED & keylock

JP21

Reset switch

SW1

Turbo switch

JP22

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

CMOS memory normal operation

JP1

Pins 2 & 3 closed

 

CMOS memory clear

JP1

Pins 1 & 2 closed

 

Monitor type select color

JP4

Closed

 

Monitor type select monochrome

JP4

Open

Power good signal detect from power supply

JP5

Pins 1 & 2 closed

 

Power good signal detect from board

JP5

Pins 2 & 3 closed

 

NPU not installed

JP11

Pins 1 & 2 closed

 

NPU installed

JP11

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

None

None

None

2MB

(4) 256K x 9

(4) 256K x 9

None

None

4MB

(4) 1M x 9

None

None

None

8MB

(4) 1M x 9

(4) 1M x 9

None

None

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

None

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note: Banks 2 & 3 are located on the external memory card.

CACHE CONFIGURATION (EXTERNAL)

Size

Bank 0

Bank 1

32KB

None

(4) 8K x 8

64KB

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

CACHE TAG CONFIGURATION (EXTERNAL)

Size

TAG

TAG 0

TAG 1

32KB

None

(1) 16K x 4

(1) 16K x 4

64KB

None

(1) 16K x 4

(1) 16K x 4

128KB

(1) 32K x 8

None

None

CACHE JUMPER CONFIGURATION (EXTERNAL)

Size

JP19

32KB

Pins 1 & 2 closed

64KB

Pins 3 & 4 closed

128KB

Pins 5 & 6 closed

CACHE JUMPER CONFIGURATION (INTERNAL)

Size

JP14

JP15

JP16

JP17

128KB internal enabled

Closed

Closed

Closed

Closed

128KB internal disabled

Open

Open

Open

Open

Note: To use internal 128KB cache, remove all external cache chips. Turn system on and press INS key. Then press F1 and enable cache in BIOS setup.