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3486 SYSTEM TYPE 32

UNITRON COMPUTER, INC.

3486 SYSTEM TYPE 32

Processor

80386DX/CX486DLC/80486SX80487SX/ODP486SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/80(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Game port

CN1

Turbo LED

J19

VGA port

CN2

Turbo switch

J21

Parallel port

CN3

IDE interface LED

J22

Serial port 2

CN4

External video ports

J23 & J46

Serial port 1

CN5

Floppy drive interface

J26

IDE interface

J16

Reset switch

J58

Power LED & keylock

J17

Riser Card

SL1

Speaker

J18

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Serial port 2 enabled

J3

pins 1 & 2 closed

 

Serial port 2 disabled

J3

pins 2 & 3 closed

»

IDE interface enabled

J4

pins 1 & 2 closed

 

IDE interface disabled

J4

pins 2 & 3 closed

»

Floppy drive interface enabled

J5

pins 1 & 2 closed

 

Floppy drive interface disabled

J5

pins 2 & 3 closed

»

Parallel port select LPT1

J6

pins 1 & 2 closed

 

Parallel port select LPT2

J6

pins 2 & 3 closed

»

Serial port 1 enabled

J8

pins 1 & 2 closed

 

Serial port 1 disabled

J8

pins 2 & 3 closed

»

Game port enabled

J9

pins 1 & 2 closed

 

Game port disabled

J9

pins 2 & 3 closed

»

Hard disk drive installed

J10

pins 1 & 2 closed

 

Hard disk drive not enabled

J10

pins 2 & 3 closed

»

Parallel port enabled

J11

pins 1 & 2 closed

 

Parallel port disabled

J11

pins 2 & 3 closed

»

NPU disabled

J20

pins 2 & 3 closed

 

NPU enabled

J20

pins 1 & 2 closed

»

Floppy drive A/B LED select on J22 Floppy drive A

J29

pins 1 & 2 closed

 

Floppy drive A/B LED select on J22 Floppy drive B

J29

pins 2 & 3 closed

»

Floppy/turbo LED select on J19 Floppy (System B or KPUA)

J30

pins 1 & 2 closed

 

Floppy/turbo LED select on J19 Turbo (System M or MSO)

J30

pins 2 & 3 closed

»

Factory configured - do not alter

J31

Open

»

Factory configured - do not alter

J32

Open

»

Factory configured - do not alter

J33

Open

»

Factory configured - do not alter

J34

Open

»

Factory configured - do not alter

J43

Open

»

Parity check disabled

J44

pins 1 & 2 closed

 

Parity check enabled

J44

pins 2 & 3 closed

»

Monitor type select monochrome

J51

pins 1 & 2 closed

 

Monitor type select color

J51

pins 2 & 3 closed

»

Factory configured - do not alter

J52

Open

»

Factory configured - do not alter

J53

Open

USER CONFIGURABLE SETTINGS (CON’T)

Function

Jumper

Position

»

Factory configured - do not alter

J54

Open

»

Factory configured - do not alter

J55

Open

»

Factory configured - do not alter

J56

Open

»

Factory configured - do not alter

J57

Open

Note: Hard drive & floppy drive jumper settings must match.

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) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

NONE

(1) 8K x 8

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J35

J36

J37

J38

J39

J40

J41

J42

32KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

Open

64KB

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

Open

128KB

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

256KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

J24

J59

80386

pins 1 & 2 closed

Open

80486DLC

pins 1 & 2 closed

Open

80486

pins 2 & 3 closed

Closed

CPU TYPECONFIGURATION

Type

J15

80486SX PQFP only

Open

80486SX PQFP & 80487SX

pins 1 & 2 closed

80486SX PQFP & 80486DX/DX2/ODP486SX

pins 2 & 3 closed

VESA CPU TYPE CONFIGURATION

Type

J1

J14

80486SX

pins 2 & 3 closed

Open

80487SX

pins 1, 2 & 3 closed

pins 2 & 3 closed

ODP486SX

pins 1, 2 & 3 closed

pins 2 & 3 closed

80486DX/DX2

pins 1, 2 & 3 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION (ICS2494-244 CLOCK)

Speed

J47

J48

J49

J50

20MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

25MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

32MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

40MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

50MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

66MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

80MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION (IMS425 CLOCK)

Speed

J47

J48

J49

J50

20MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

25MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

32MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

40MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

50MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

66MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

80MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

SERIAL PORT 1 CONFIGURATION

Port 1

J7

COM1

pins 1 & 2 closed

COM3

pins 2 & 3 closed

SERIAL PORT 2 CONFIGURATION

Port 2

J2

COM2

pins 1 & 2 closed

COM4

pins 2 & 3 closed