...because we can't all be on the bleeding edge...





CROSS 486G-VLB

YOUNG MICRO SYSTEMS, INC.

CROSS 486G-VLB

Processor

SL80486SX/80486SX/SL80486DX/80486DX/80486DX2/80486DX4/P24D/ Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J1

Reset switch

J4

Power LED & keylock

J2

Turbo LED

J5

Speaker

J3

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Open

 

Factory configured - do not alter

JP2

pins 1 & 2 closed

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

Factory configured - do not alter

JP8

Open

Factory configured - do not alter

JP11

Closed

Factory configured - do not alter

JP12

Open

Factory configured - do not alter

JP13

Open

Factory configured - do not alter

JP14

Open

Factory configured - do not alter

JP15

Open

Factory configured - do not alter

JP16

Open

Factory configured - do not alter

JP17

Open

Factory configured - do not alter

JP18

Open

Factory configured - do not alter

JP20

pins 2 & 3 closed

Factory configured - do not alter

JP21

pins 1 & 2 closed

Factory configured - do not alter

JP22

Open

Factory configured - do not alter

JP25

Open

Factory configured - do not alter

JP28

pins 1 & 2 closed

Factory configured - do not alter

JP30

Open

Factory configured - do not alter

JP31

pins 2 & 3 closed

Factory configured - do not alter

JP38

Open

Factory configured - do not alter

JP39

Open

Factory configured - do not alter

JP40

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

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

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP32

JP33

JP34

JP35

JP36

JP37

64KB

Open

2 & 3

2 & 3

Open

Open

Open

128KB

Open

2 & 3

1 & 2

Open

Closed

Open

256KB

Open

2 & 3

2 & 3

Closed

Closed

Open

512KB

Closed

Open

1 & 2

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP9

JP10

JP19

JP29

JP106

JP107

SL80486SX

Closed

Closed

Open

2 & 3

Open

Open

80486SX

Closed

Closed

Open

2 & 3

Open

Open

SL80486DX

Closed

Closed

1 & 2

1 & 2, 3 & 4

Open

Open

80486DX

Closed

Closed

1 & 2

1 & 2, 3 & 4

Open

Open

80486DX2

Closed

Closed

1 & 2

1 & 2, 3 & 4

Open

Open

80486DX4

Open

Open

1 & 2

1 & 2, 3 & 4

Closed

Closed

P24D

Closed

Closed

1 & 2

1 & 2, 3 & 4

Open

Open

P24T

Open

Open

1 & 2

1 & 2, 3 & 4

Closed

Closed

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP5

JP6

JP7

25MHz

Open

Open

Closed

33MHz

Closed

Open

Closed

40MHz

Open

Closed

Closed

50iMHz

Open

Open

Closed

50MHz

Closed

Closed

Closed

66iMHz

Closed

Open

Closed

75iMHz

Open

Open

Closed

100iMHz

Closed

Open

Closed

CPU SPEED CONFIGURATION (80486DX4 ONLY)

Speed

JP26

2x

pins 1 & 2 closed

2.5x

pins 2 & 3 closed

3x

Open

VESA WAIT STATE CONFIGURATION

Wait states

JP23

0 wait states

Open

1 wait state

Closed

BUS SPEED CONFIGURATION

CPU speed

JP24

<= 33MHz

Open

> 33MHz

Closed

BIOS CONFIGURATION

Setting

JP4

JP27

CMOS memory normal operation

pins 2 & 3 closed

pins 1 & 2 closed

CMOS memory clear

pins 1 & 2 closed

pins 2 & 3 closed