UNIDENTIFIED

386 CACHE 33MHZ

Processor

80386SX (exact location unidentified)

Processor Speed

25/33MHz

Chip Set

Unidentified

Max. Onboard DRAM

16MB (12MB on external memory card)

Cache

32/64KB

BIOS

Phoenix

Dimensions

355mm x 305mm

I/O Options

32-bit external memory card

NPU Options

80387SX/3167(exact location unidentified)

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

External memory card

SL1

Power LED & keylock

J2

Reset switch

W3

External battery

J4

Cache/turbo LED

W5

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

 

Battery type select internal

H1

Closed

 

Battery type select external

H1

Open

»

Factory configured - do not alter

SW2/1

On

 

NPU disabled

SW2/2

Off

 

NPU enabled

SW2/2

On

»

Factory configured - do not alter

SW2/3

Off

»

EGA BIOS relocated

SW2/4

On

 

EGA BIOS not relocated

SW2/4

Off

»

Factory configured - do not alter

SW2/5

Off

 

Monitor type select CGA/EGA/VGA

SW2/6

On

 

Monitor type select MGA

SW2/6

Off

 

Slot speed select 12.5MHz

SW2/8

On

 

Slot speed select 8.3MHz

SW2/8

Off

»

Factory configured - do not alter

W1

Open

»

Factory configured - do not alter

W2

Open

»

Factory configured - do not alter

W6

Open

»

Factory configured - do not alter

W9

Open

»

Factory configured - do not alter

W10

pins 2 & 3 closed

»

Factory configured - do not alter

W12

N/A

»

Factory configured - do not alter

W14

N/A

»

Factory configured - do not alter

W15

N/A

»

Factory configured - do not alter

W16

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(36) 41256

NONE

NONE

NONE

2MB

(36) 41256

(36) 41256

NONE

NONE

4MB

(36) 411000

NONE

NONE

NONE

8MB

(36) 411000

(36) 411000

NONE

NONE

16MB

(36) 411000

(36) 411000

(4) 1M x 9

(4) 1M x 9

Note: Banks 1, 2, & 3 are located on the external memory card.

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

SW1/6

SW1/7

SW1/8

1MB

On

Off

On

On

Off

Off

Off

2MB

Off

On

On

On

Off

Off

Off

4MB

On

On

Off

Off

Off

Off

Off

8MB

Off

On

Off

Off

Off

Off

Off

16MB

Off

Off

Off

Off

Off

Off

Off

DRAM SPEED CONFIGURATION

CPU speed

DRAM speed

SW1/5

25MHz

80ns

Off

25MHz

100ns

Off

25MHz

120ns

On

33MHz

60ns

Off

33MHz

80ns

On

CACHE CONFIGURATION

Size

Bank 0

Bank 1

32KB

(4) 8K x 8

NONE

64KB

(4) 8K x 8

(4) 8K x 8

CACHE JUMPER CONFIGURATION

Size

W8

W13

32KB

pins 1 & 2 closed

pins 1 & 2 closed

64KB

pins 2 & 3 closed

pins 2 & 3 closed

CACHE JUMPER/SWITCH CONFIGURATION

Setting

W4

SW2/7

Enabled

pins 1 & 2 closed

On

Disabled

pins 2 & 3 closed

Off

NPU CONFIGURATION

Setting

W7

W11

Asynchronous

Closed

pins 1 & 2 closed

Synchronous

Open

pins 2 & 3 closed