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VS486F (REV. 2.0)

YOUNG MICRO SYSTEMS, INC.

VS486F (REV. 2.0)

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Symphony

Video Chip Set

None

Maximum Onboard Memory

32MB

Maximum Video Memory

None

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Turbo LED

J4

Power LED & keylock

J2

Turbo switch

J5

Reset switch

J3

 

 

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) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

Note: The location of the banks and TAG are unidentified.

CACHE JUMPER CONFIGURATION

Size

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

64KB

Off

On

Off

On

Off

On

256KB

On

Off

On

Off

On

Off

CPU SPEED SELECTION

Speed

SW1/1

SW1/2

25MHz

Off

On

33MHz

Off

On

50iMHz

Off

On

50MHz

On

Off

66iMHz

Off

On

CPU TYPE SELECTION

Type

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

80486SX

Off

On

Off

On

On

Off

Off

Off

80486DX

Off

On

On

On

Off

On

On

On

80486DX2

Off

On

On

On

Off

On

Off

Off