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TEK-AT4L PLUS

TEKNOR INDUSTRIAL COMPUTERS, INC.

TEK-AT4L PLUS

Device Type

Single board computer

Processor

80486SX/80486SX2/80486DX/AM486DX2/80486DX2/AM486DX4/

80486DX4/AM 5X86

Processor Speed

25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz

Chip Set

VLSI 82C486

Maximum Onboard Memory

128MB (EDO & SDRAM supported)

Cache

128/256/512/1024/2048KB

BIOS

Unidentified

Dimensions

341mm x 119mm

I/O Options ()

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

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface

J1

Power connector

J5

Floppy drive interface

J2

Serial port 1

J6

Front panel connector

J3

Parallel port

J7

PS/2 mouse interface

J3A

Chassis fan power

J10

Serial port 2

J4

 

 

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Boot from flash

SW1/pins 1 & 2

Closed

 

Boot from drive

SW1/pins 1 & 2

Open

 

Serial port select for VT100 download COM2

SW1/pins 3 & 4

Closed

 

Serial port select for VT100 download COM1

SW1/pins 3 & 4

Open

 

Display mode select VT100

SW1/pins 5 & 6

Closed

 

Display mode select standard

SW1/pins 5 & 6

Open

 

Download mode select remote

SW1/pins 7 & 8

Closed

 

Download mode select normal

SW1/pins 7 & 8

Open

Factory configured - do not alter

SW2

Unidentified

Power fail detection

W7

Pins 1 & 2 closed

 

Low battery detection

W7

Pins 2 & 3 closed

Vbatt disabled

W10

Open

 

Vbatt enabled

W10

Closed

IOCHRDY signal to IDE interface disabled

W11

Open

 

IOCHRDY signal to IDE interface enabled

W11

Closed

Watchdog timer enabled

W12

Closed

 

Watchdog timer disabled

W12

Open

Power monitoring disabled

W13

Open

 

Power monitoring enabled

W13

Closed

Flash BIOS write enabled

W14

Closed

 

Flash BIOS write disabled

W14

Open

BIOS write select EPROM

W15

Open

 

BIOS write select flash

W15

Closed

Teknor BIOS extension enabled

W16

Open

 

Teknor BIOS extension disabled

W16

Closed

PS/2 mouse enabled

W19A

Closed

 

PS/2 mouse disabled

W19A

Open

Monitor type select color

W22

Open

 

Monitor type select monochrome

W22

Closed

 

Parallel port IRQ select IRQ5

W25

Pins 1 & 2 closed

 

Parallel port IRQ select IRQ7

W25

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

1MB

(4) 256K x 9

4MB

(4) 1M x 9

16MB

(4) 4M x 9

32MB

(4) 8M x 9

SIMM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

None

2MB

(1) 512K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

3MB

(1) 512K x 36

(1) 256K x 36

4MB

(1) 1M x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

5MB

(1) 1M x 36

(1) 256K x 36

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

9MB

(1) 2M x 36

(1) 256K x 36

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

17MB

(1) 4M x 36

(1) 256K x 36

18MB

(1) 4M x 36

(1) 512K x 36

20MB

(1) 4M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CPU SPEED SELECTION

Speed

W21

25MHz

Pins 1 & 2, 3 & 4, 5 & 6 closed

33MHz

Pins 3 & 4, 5 & 6 closed

50iMHz

Pins 1 & 2, 3 & 4, 5 & 6 closed

66iMHz

Pins 3 & 4, 5 & 6 closed

75iMHz

Pins 1 & 2, 3 & 4, 5 & 6 closed

100iMHz

Pins 3 & 4, 5 & 6 closed

CPU TYPE SELECTION

Type

W17

W18

W19

W26

80486SX

Open

Pins 1 & 2 closed

Open

Open

80486SX2

Open

Pins 1 & 2 closed

Open

Open

80486DX

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

AM486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Closed

80486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

80486DX2 (WB)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

ODP486

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Open

80486DX4

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

AM486DX4

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

80486DX4 (WB)

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Open

AM 5X86

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Closed

CPU VOLTAGE SELECTION

Voltage

W27

3.3v

Open

5v

Closed

BUSCLK SIGNAL SELECTION

Speed

W20

16MHz

Pins 2 & 3 closed

25MHz

Pins 1 & 2 closed

33MHz

Open

DMA CHANNEL SELECTION

Channel

W23

W24

1

Pins 1 & 2 closed

Pins 1 & 2 closed

3

Pins 2 & 3 closed

Pins 2 & 3 closed

SERIAL PORT 2 SELECTION

Setting

W1

W2

W3

W4

W5

W6

RS-232

1 & 2

1 & 2

Open

Open

1 & 2

1 & 2

RS-485

2 & 3

2 & 3

Closed

Closed

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

EDOUT SELECTION

Setting

W8

EDOUT left to software

Open

EDOUT to pin 29 & ground to pin 17

Pins 1 & 3, 2 & 4 closed

EDOUT to pin 17 & ground to pin 29

Pins 1 & 2, 3 & 4 closed

Note: The above listed pins are located on J2.

HDOUT SELECTION

Setting

W9

HDOUT left to software

Open

HDOUT to pin 33 & ground to pin 27

Pins 1 & 3, 2 & 4 closed

HDOUT to pin 27 & ground to pin 33

Pins 1 & 2, 3 & 4 closed

Note: The above listed pins are located on J2.