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80486SX/DX/DX2 (SYMPHONY)

PEACOCK AG

80486SX/DX/DX2 (SYMPHONY)

Processor

80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Symphony

Max. Onboard DRAM

32MB

Cache

64/128/256/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, serial ports (2)

NPU Options

4167 (not present on all boards)

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface

CN1

Turbo LED

JP5

Floppy drive interface

CN2

Speaker

JP7

Parallel port

CN3

Power LED & keylock

JP9

Serial port 2

CN4

Reset switch

JP11

Serial port 1

CN5

IDE interface LED

JP12

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

I/O bus speed select CPUCLK=CCLK2

JP2

pins 1 & 2 closed

 

I/O bus speed select CPUCLK=PCLK

JP2

pins 2 & 3 closed

»

Cache support enabled

JP6

Open

 

Cache support disabled

JP6

Closed

»

Monitor type select color

JP10

Closed

 

Monitor type select monochrome

JP10

Open

»

On board I/O enabled

JP18

pins 2 & 3 closed

 

On board I/O disabled

JP18

pins 1 & 2 closed

»

Parallel port IRQ sleect IRQ7

JP19

pins 2 & 3 closed

 

Parallel port IRQ sleect IRQ5

JP19

pins 1 & 2 closed

»

Cache controller timing select 1

JP30

pins 1 & 2 closed

 

Cache controller timing select 2

JP30

pins 2 & 3 closed

»

CPU oscillator matches CPU speed

JP36

Closed

 

CPU oscillator matches 2x CPU speed

JP36

Open

»

CPU algorithm select 3-2-2-2

JP37

Closed

 

CPU algorithm select 2-1-1-1

JP37

Open

»

Cache wait state select 0 wait states

JP38

Open

 

Cache wait state select 1 wait state

JP38

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

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) 256K x 9

(4) 4M x 9

17MB

(4) 4M x 9

(4) 256K x 9

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

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

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

CACHE JUMPER CONFIGURATION

Size

JP20

JP21

JP22

JP23

JP24

JP25

64KB

2 & 3

2 & 3

2 & 3

Open

2 & 3

2 & 3

128KB

1 & 2

Open

1 & 2

Closed

1 & 2

1 & 2

256KB

2 & 3

1 & 2

2 & 3

Open

2 & 3

2 & 3

1MB

2 & 3

1 & 2

2 & 3

Open

2 & 3

2 & 3

Note: Pins designated should be in the closed positon.

CACHE JUMPER CONFIGURATION (CON’T)

Size

JP26

JP27

JP31

JP32

JP33

JP34

JP35

64KB

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

Closed

128KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

Closed

256KB

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

Closed

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Closed

Note: Pins designated should be in the closed positon.

CPU TYPE CONFIGURATION

Type

JP1

JP3

JP4

80486SX

pins 2 & 3 closed

Open

Open

80486DX

pins 1 & 2 closed

Closed

Closed

80486DX2

pins 1 & 2 closed

Closed

Closed