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386 SERIES MODELS 320/325

COMPUADD, INC.

386 SERIES MODELS 320/325

Processor

80386DX

Processor Speed

20/25MHz

Chip Set

Unidentified

Max. Onboard DRAM

16MB (on external memory card)

Cache

32KB (exact location unidentified)

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card, IDE interface, serial ports (2), parallel port

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

IDE interface LED

J15

Power LED & keylock

J4

Reset switch

J24

External battery

J7

32-bit external memory card

SL1

IDE interface

J8

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Monitor type select color

J3

Closed

 

Monitor type select monochrome

J3

Open

Cache enabled

J6

Closed

 

Cache disabled

J6

Open

IDE active high reset

J9

pins 1 & 2 closed

 

IDE active low reset

J9

pins 2 & 3 closed

IDE interface enabled

J10

Closed

 

IDE interface disabled

J10

Open

Cache enabled

J14

pins 1 & 2 closed

 

Cache disabled

J14

pins 2 & 3 closed

Serial port 1 enabled (IRQ4)

SW1/1

On

 

Serial port 1 disabled (IRQ4)

SW1/1

Off

Serial port 2 enabled (IRQ3)

SW1/2

On

 

Serial port 2 disabled (IRQ3)

SW1/2

Off

Parallel port enabled

SW1/3

On

 

Parallel port disabled

SW1/3

Off

Parallel port IRQ select IRQ7

SW1/4

On

 

Parallel port IRQ select IRQ5

SW1/4

Off

Factory configured - do not alter

SW1/5

Off

Factory configured - do not alter

SW1/6

Off

Note : On some revisions, switch SW1 may be a 4-position switch.

CACHE CONFIGURATION

Note: The location and configuration of the cache is unidentified.

NPU CONFIGURATION

Setting

J12

J13

NPU not installed

Closed

Open

NPU installed

Open

Closed

BIOS CONFIGURATION

Size

J5

27128

pins 1 & 8, 2 & 7 closed

27256

pins 3 & 6, 4 & 5 closed

USER CONFIGURABLE SETTINGS

Function

Switch

Position

Memory between 512KB & 640KB enabled

SW1/5

On

 

Memory between 512KB & 640KB disabled

SW1/5

Off

Memory between 256KB & 512KB enabled

SW1/6

On

 

Memory between 256KB & 512KB disabled

SW1/6

Off

Factory configured - do not alter

SW1/7

Off

Factory configured - do not alter

SW1/8

Off

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

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

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

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

1MB

Off

Off

Off

Off

2MB

On

Off

Off

Off

3MB

On

On

Off

Off

4MB

On

On

On

Off

4MB

Off

Off

Off

On

8MB

On

Off

Off

On

12MB

On

On

Off

On

16MB

On

On

On

On