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VL-BUS

UNIDENTIFIED

VL-BUS

Processor

CX486S/80486SX/80487SX/CX486M6(WB)/CX486M6(WT)/80486DX/80486DX2/P24T/P24T(WB)/P24T(WT)

Processor Speed

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

Chip Set

UNI

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J4

External battery

J8

Turbo LED

J5

Reset switch

J10

Speaker

J6

32-bit VESA local bus slots

SL1 - SL3

Power LED & keylock

J7

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Monitor type select monochrome

JP12

Open

 

Monitor type select CGA

JP12

Closed

 

Monitor type select VGA/SVGA/EGA/XGA

JP12

Any setting

CMOS memory normal operation

JP14

Pins 1 & 2 closed

 

CMOS memory clear

JP14

Pins 2 & 3 closed

Factory configured - do not alter

JP100

Pins 1 & 2 closed

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

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

None

80MB

(4) 16M x 9

(4) 4M x 9

128MB

(4) 16M x 9

(4) 16M 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/16K/32Kx 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K/32Kx 8

CACHE JUMPER CONFIGURATION

Size

JP20

JP21

JP22

JP25

32KB

Open

Open

2 & 3

Open

64KB

Open

Closed

1 & 2

Open

128KB

Closed

Closed

1 & 2, 3 & 4

Open

256KB

Closed

Closed

1 & 2, 4 & 5

Closed

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION

Speed

JP16

JP17

JP18

25MHz

Closed

Closed

Open

33MHz

Closed

Open

Closed

40MHz

Open

Closed

Open

50iMHz

Closed

Closed

Open

50MHz

Open

Open

Closed

66iMHz

Closed

Open

Closed

CPU TYPE SELECTION

Type

JP2

CX486S

Pins 5 & 6 closed

80486SX

Pins 5 & 6 closed

80487SX

Pins 1 & 2, 4 & 5, 6 & 7 closed

80486DX

Pins 2 & 3, 4 & 5, 6 & 7 closed

80486DX2

Pins 2 & 3, 4 & 5, 6 & 7 closed

P24T

Pins 1 & 2, 4 & 5, 6 & 7 closed

CPU TYPE SELECTION

Type

JP1

JP4

JP5

JP10

JP11

CX486M6 (WB)

Open

1 & 2

2 & 3

2 & 3

Open

CX486M6 (WT)

Open

2 & 3

1 & 2

1 & 2

Open

80486DX

Open

2 & 3

1 & 2

1 & 2

Open

80486DX2

Open

2 & 3

1 & 2

1 & 2

Open

P24T (WB)

Closed

2 & 3

1 & 2

1 & 2

Closed

P24T (WT)

Open

2 & 3

1 & 2

1 & 2

Open

Note: Pins designated should be in the closed position.

VL-BUS SPEED SELECTION

Setting

JP15

<= 33MHz

Pins 1 & 2 closed

>33 MHz

Pins 2 & 3 closed