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VEGA 486F-2VL

YOUNG MICRO SYTEMS, INC.

VEGA 486F-2VL

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

16/20/25/33/50(internal)/50/66(internal)MHz

Chip Set

Symphony

Max. Onboard DRAM

64MB

Cache

64/256/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Turbo LED

J4

Power LED & keylock

J2

Turbo switch

J5

Reset

J3

32-bit VESA local bus slots

S1 & S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

VESA I/O wait states select zero

JP5

Open

 

VESA I/O wait states select one

JP5

Open

Factory configured - do not alter

JP6

Closed

VESA timing select T3 speed 16 - 33MHz)

JP7

Closed

 

VESA timing select T3 (speed 50MHz)

JP7

Open

I/O wait states select zero

JP10

Closed

 

I/O wait states select one

JP10

Open

Phase select X2 1

JP11

pins 2 & 3 closed

 

Phase select X1 1

JP11

pins 1 & 2 closed

Phase select X2 1

JP12

pins 2 & 3 closed

 

Phase select X1 1

JP12

pins 1 & 2 closed

Phase select X2 1

JP18

pins 2 & 3 closed

 

Phase select X1 1

JP18

pins 1 & 2 closed

Phase select X2 1

JP19

pins 2 & 3 closed

 

Phase select X1 1

JP19

pins 1 & 2 closed

Factory configured - do not alter

JP13

Closed

Factory configured - do not alter

JP14

Closed

Note: 1 Phase X1 is only used when an 80486DX2-50 CPU is installed.

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

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 256K x 9

(4) 4M 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

64KB

(8) 8K x 8

256KB

(8) 32K x 8

1MB

(8) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP20

JP21

JP27

JP28

JP29

64KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

256KB

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP15

JP16

JP17

80486SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

ODP486SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

80487SX

Open

Closed

Open

80486DX

Closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

Closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP3

JP4

JP8

JP9

16/20/25MHz

Open

Open

Open

Open

33MHz

pins 1 & 2 closed

Open

Open

Open

50MHz

pins 2 & 3 closed

Closed

Closed

Closed