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386SX-MIDGET

DEICO ELECTRONICS, INC.

386SX-MIDGET

Processor

80386SX

Processor Speed

16/20MHz

Chip Set

OPTI

Max. Onboard DRAM

8MB

Cache

None

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

Floppy drive interface, IDE interface, Parallel port, Serial port (2)

NPU Options

80387SX

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

NONE

NONE

1MB

(2) 256K x 9

(2) 256K x 9

NONE

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

NONE

2MB

(2) 1M x 9

NONE

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

NONE

5MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

(2) 1M x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NONE

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

J13

Reset switch

J19

Serial port 2

J14

Power LED & keylock

J20

Parallel port

J15

Speaker

J21

IDE interface

J16

Turbo switch

J22/pins 1 & 2

Floppy drive interface

J17

Turbo LED

J22/pins 3 & 4

IDE interface LED

J18

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Parallel port (J15) select LPT1 at 378h

W1

pins 1 & 2 closed

 

Parallel port (J15) select LPT2 at 278h

W1

pins 2 & 3 closed

 

Parallel port (J15) disabled

W1

pins 3 & 4 closed

Serial port 1 (J13) select COM1 at 3F8h

W2

pins 1 & 2 closed

 

Serial port 1 (J13) select COM3 at 3E8h

W2

pins 2 & 3 closed

 

Serial port 1 (J13) disabled

W2

pins 3 & 4 closed

Serial port 2 (J14) select COM2 at 2F8h

W3

pins 1 & 2 closed

 

Serial port 2 (J14) select COM4 at 2E8h

W3

pins 2 & 3 closed

 

Serial port 2 (J14) disabled

W3

pins 3 & 4 closed

Parallel port (J15) select IRQ7

W4

pins 1 & 2 closed

 

Parallel port (J15) select IRQ5

W4

pins 2 & 3 closed

 

Parallel port (J15) select disabled

W4

pins 3 & 4 closed

IRQ3 select serial port 2 (J14)

W5

pins 1 & 2 closed

 

IRQ3 select serial port 1 (J13)

W5

pins 2 & 3 closed

 

IRQ3 disabled

W5

pins 3 & 4 closed

IRQ4 select serial port 1 (J13)

W6

pins 2 & 3 closed

 

IRQ4 select serial port 2 (J14)

W6

pins 1 & 2 closed

 

IRQ4 disabled

W6

pins 3 & 4 closed

IRQ5 disabled

W7

pins 3 & 4 closed

 

IRQ5 select serial port 2 (J14)

W7

pins 1 & 2 closed

 

IRQ5 select serial port 1 (J13)

W7

pins 2 & 3 closed

IRQ9 disabled

W8

pins 3 & 4 closed

 

IRQ9 select serial port 2 (J14)

W8

pins 1 & 2 closed

 

IRQ9 select serial port 1 (J13)

W8

pins 2 & 3 closed

Floppy drive interface enabled

W9

pins 1 & 2 closed

 

Floppy drive interface disabled

W9

pins 2 & 3 closed

IDE interface enabled

W10

pins 1 & 2 closed

 

IDE interface disabled

W10

pins 2 & 3 closed

Monitor type select color

W11

pins 1 & 2 closed

 

Monitor type select monochrome

W11

pins 2 & 3 closed

Speaker select internal

W12

pins 1 & 2 closed

 

Speaker select external

W12

pins 2 & 3 closed

Factory configured - do not alter

W13

open

Pipeline mode enabled

W14

pins 1 & 2 closed

 

Pipeline mode disabled

W14

pins 2 & 3 closed