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486UL (VER. 2)

UNIDENTIFIED

486UL (VER. 2)

Processor

80486SX/80487SX/ODP486/80486DX/80486DX2

Processor Speed

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

Chip Set

UMC

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

64/128/256KB

BIOS

AMI/Award

Dimensions

250mm x 220mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Power LED & keylock

J5

Turbo LED

J2

Reset switch

J6

Turbo switch

J3

32-bit VESA local bus slots

SL1 - SL3

Speaker

J4

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Turbo switch enabled/controlled by kbd CTRL, ALT - (low), CTRL, ALT + (high)

J3

Open

 

Turbo switch disabled

J3

Closed

Any VESA card installed

JP9

1 & 2

 

Weitek Power 9000 VESA card installed

JP9

2 & 3

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

None

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

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 RESISTOR CONFIGURATION

Size

RN6

RN7

RN8

64KB

Installed

Not installed

Not installed

128KB

Not installed

Installed

Not installed

256KB

Not installed

Not installed

Installed

CPU SPEED SELECTION

Speed

J22

JP3

JP4

JP5

25MHz

Pins 1 & 2 closed

Closed

Open

Open

33MHz

Pins 1 & 2 closed

Closed

Closed

Closed

40MHz

Pins 1 & 2 closed

Closed

Closed

Open

50iMHz

Pins 1 & 2 closed

Closed

Open

Open

50MHz

Pins 2 & 3 closed

Open

Open

Closed

66iMHz

Pins 1 & 2 closed

Closed

Closed

Closed

CPU TYPE SELECTION

Type

JP1

JP2

80486SX

Pins 2 & 3 closed

Open

80487SX

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

ODP486

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

80486DX

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

80486DX2

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

VL BUS WAIT STATE SELECTION

Setting

JP13

 

0

Open

1

Closed

VL-BUS SPEED SELECTION

CPU speed

JP12

<= 33MHz

Open

>33 MHz

Closed