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MODEL 6386SX/EL20 (FM-0589-09)

AT & T

MODEL 6386SX/EL20 (FM-0589-09)

Processor

80386SX (exact location unidentified)

Processor Speed

20MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

32MB

Maximum Video Memory

None

Cache

16/32/64KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

VGA feature connector

CN1

VGA port

CN6

PS/2 mouse port

CN2

Floppy drive interface

CN7

Serial port

CN3

IDE interface

CN8

Serial port

CN4

Riser slot

SL1

Parallel port

CN5

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

16-bit video BIOS enabled

SW1/3

Off

 

8-bit video BIOS enabled

SW1/3

On

»

16-bit video buffer enabled

SW1/4

Off

 

8-bit video buffer enabled

SW1/4

On

»

1024 x 768 interlaced enabled

SW1/5

On

 

1024 x 768 non interlaced enabled

SW1/5

Off

»

On board video enabled

SW1/8

On

 

On board video disabled

SW1/8

Off

»

Password normal operation

W1

Pins 1 & 2 closed

 

Password clear

W1

Pins 2 & 3 closed

»

Factory configured - do not alter

W2

Open

»

Monitor type select color

W3

Closed

 

Monitor type select monochrome

W3

Open

»

Parallel port unidirectional

W4

Closed

 

Parallel port bidirectional

W4

Open

»

PS/2 mouse IRQ12 enabled

W5

Closed

 

PS/2 mouse IRQ12 disabled

W5

Open

»

Non volatile RAM normal operation

W7

Open

 

Non volatile RAM clear

W7

Closed

»

Speaker type select onboard

W10

Pins 1 & 2 closed

 

Speaker type select offboard

W10

Pins 2 & 3 closed

»

IDE interface LED enabled

W11

Pins 2 & 3 closed

 

IDE interface LED disabled

W11

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

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) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

None

None

None

2.5MB

(2) 1M x 9

(2) 256K x 9

None

None

3MB

(2) 1M x 9

(2) 256K x 9

(2) 256K x 9

None

3.5MB

(2) 1M x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

4MB

(2) 1M x 9

(2) 1M x 9

None

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

4.5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

None

5MB

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

(2) 256K x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

None

6.5MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

None

None

None

8.5MB

(2) 4M x 9

(2) 256K x 9

None

None

9MB

(2) 4M x 9

(2) 256K x 9

(2) 256K x 9

None

9.5MB

(2) 4M x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

10MB

(2) 4M x 9

(2) 1M x 9

None

None

10.5MB

(2) 4M x 9

(2) 1M x 9

(2) 256K x 9

None

11MB

(2) 4M x 9

(2) 1M x 9

(2) 256K x 9

(2) 256K x 9

12MB

(2) 4M x 9

(2) 1M x 9

(2) 1M x 9

None

12.5MB

(2) 4M x 9

(2) 1M x 9

(2) 1M x 9

(2) 256K x 9

14MB

(2) 4M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

16MB

(2) 4M x 9

(2) 4M x 9

None

None

16.5MB

(2) 4M x 9

(2) 4M x 9

(2) 256K x 9

None

17MB

(2) 4M x 9

(2) 4M x 9

(2) 256K x 9

(2) 256K x 9

18MB

(2) 4M x 9

(2) 4M x 9

(2) 1M x 9

None

18.5MB

(2) 4M x 9

(2) 4M x 9

(2) 1M x 9

(2) 256K x 9

20MB

(2) 4M x 9

(2) 4M x 9

(2) 1M x 9

(2) 1M x 9

32MB

(2) 4M x 9

(2) 4M x 9

(2) 4M x 9

(2) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

16KB

(2) 8K x 8

None

32KB

(2) 8K x 8

(2) 8K x 8

64KB

(2) 32K x 8

None

Note: The location of the cache is unidentified.

CACHE JUMPER CONFIGURATION

Size

W9

16KB

Pins 1 & 2 closed

32KB

Pins 1 & 2 closed

64KB

Pins 2 & 3 closed

MCLK SELECTION

Type

SW1/6

SW1/7

»

41.612MHz

On

On

 

36.242MHz

Off

On

 

37.585MHz

On

Off

 

44.744MHz

Off

Off

MONITOR SELECTION

Setting

SW1/1

SW1/2

»

PS/2 VGA

Off

Off

 

MDA

On

On

 

AT VGA

Off

On

 

CGA

On

Off