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MODEL D3/SX (VERSION 2)

LEADING EDGE PRODUCTS, INC.

MODEL D3/SX (VERSION 2)

Processor

80386SX

Processor Speed

16MHz

Chip Set

Zymos

Max. onboard DRAM

4MB

SRAM Cache

None

BIOS

Leading Edge

Dimensions

325mm x 308mm

I/O Options

Floppy drive interface, mouse port, parallel port, serial ports (2)

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Mouse port

CN1

Parallel port

CN4

Serial port 1 (25 pin)

CN2

Floppy drive interface

CN5

Serial port 2 (9 pin)

CN3

   

USER CONFIGURABLE SETTINGS

Function

JUMPER

Position

Monitor type select color

J5

pins 1 & 2 closed

 

Monitor type select monochrome

J5

pins 2 & 3 closed

Floppy drive interface enabled

J9

pins 2 & 3 closed

 

Floppy drive interface disabled

J9

pins 1 & 2 closed

Mouse port enabled

J15

pins 1 & 2 closed

 

Mouse port disabled

J15

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

J6

J7

J8

512KB

(2) 256K x 9

None

pins 2 & 3

pins 2 & 3

pins 2 & 3

1MB

(2) 256K x 9

(2) 256K x 9

pins 2 & 3

pins 1 & 2

pins 2 & 3

2MB

(2) 1M x 9

NONE

pins 2 & 3

pins 2 & 3

pins 1 & 2

4MB

(2) 1M x 9

(2) 1M x 9

pins 2 & 3

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION

IRQ

ADDRESS

J10

J11

5

378h

pins 1 & 2 closed

pins 2 & 3 closed

7

278h

pins 2 & 3 closed

pins 1 & 2 closed

5

278h

pins 1 & 2 closed

pins 1 & 2 closed

7

378h

pins 2 & 3 closed

pins 2 & 3 closed

Disabled

Disabled

Open

Open

SERIAL PORT CONFIGURATION

Port 1 (25 pine)

Port 2 (9 pin)

J12

J13

COM1

COM2

pins 2 & 3 closed

pins 2 & 3 closed

COM1

COM4

pins 2 & 3 closed

pins 1 & 2 closed

COM1

Disabled

pins 2 & 3 closed

Open

COM3

COM2

pins 1 & 2 closed

pins 2 & 3 closed

Disabled

COM2

Open

pins 2 & 3 closed

COM3

COM4

pins 1 & 2 closed

pins 1 & 2 closed

Disabled

COM4

Open

pins 1 & 2 closed

Disabled

Disabled

Open

Open

MOUSE CONFIGURATION

IRQ

J16 - J18

J19

3

Open

Open

4

Open

Open

5

Open

Open

9

Open

Closed