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386DX-25/33 SYSTEM

UNIDENTIFIED

386DX-25/33 SYSTEM

Processor

80386DX

Processor Speed

25/33MHz

Chip Set

Unidentified

Video Chip Set

Trident

Maximum Onboard Memory

32MB

Maximum Video Memory

1MB

Cache

None

BIOS

Phoenix

Dimensions

378mm x 310mm

I/O Options

Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port, riser slot, modem connector

NPU Options

80387DX/3167

CONNECTIONS

Purpose

Location

Purpose

Location

Game port

CN1

IDE interface

J24

VGA port

CN2

IDE interface LED

J25

Parallel port

CN3

Floppy drive interface LED

J26

Serial port 2

CN4

Power LED

J27

Serial port 1

CN5

Floppy drive interface

J28

Chassis fan power

J4

Reset switch

J29

External battery

J10

Riser slot

SL1

Modem connector

J23

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

HDC enabled

J2

Pins 2 & 3 closed

 

HDC disabled

J2

Pins 1 & 2 closed

 

Game port enabled

J3

Pins 1 & 2 closed

 

Game port disabled

J3

Pins 2 & 3 closed

 

Monitor type select color

J5

Closed

 

Monitor type select monochrome

J5

Open

 

Serial port 2 enabled

J6

Pins 1 & 2 closed

 

Serial port 2 disabled

J6

Pins 2 & 3 closed

 

Parallel port enabled

J7

Pins 1 & 2 closed

 

Parallel port disabled

J7

Pins 2 & 3 closed

 

Serial port 2 COM select COM2

J8

Pins 1 & 2 closed

 

Serial port 2 COM select COM4

J8

Pins 2 & 3 closed

 

Parallel port LPT select LPT1

J9

Pins 1 & 2 closed

 

Parallel port LPT select LPT2

J9

Pins 2 & 3 closed

 

Serial port 1 enabled

J11

Pins 1 & 2 closed

 

Serial port 1 disabled

J11

Pins 2 & 3 closed

 

Serial port 1 COM select COM1

J12

Pins 1 & 2 closed

 

Serial port 1 COM select COM3

J12

Pins 2 & 3 closed

Monitor type select standard

J16

Pins 1 & 2 closed

 

Monitor type select non standard monochrome

J16

Pins 2 & 3 closed

 

Monitor type select non standard color

J16

Open

 

Video mode select interlaced

J19

Closed

 

Video mode select non interlaced

J19

Open

 

IDE interface enabled

J21

Pins 1 & 2 closed

 

IDE interface disabled

J21

Pins 2 & 3 closed

 

Floppy drive interface enabled

J22

Pins 1 & 2 closed

 

Floppy drive interface disabled

J22

Pins 2 & 3 closed

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

16MB

(4) 4M x 9

None

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

Note: Banks are interchangeable.

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

256KB

(2) 44256

None

None

None

512KB

(2) 44256

(2) 44256

None

None

1MB

(2) 44256

(2) 44256

(2) 44256

(2) 44256