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G486PE

JOINDATA SYSTEMS, INC.

G486PE

Processor

80486SX/80486DX/80486DX2

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Reset switch

J9

Power LED & keylock

J5

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

I/O bus speed select normal

JP1

Open

 

I/O bus speed select slow

JP1

Closed

Monitor type select monochrome

JP5

Open

 

Monitor type select color

JP5

Closed

Burst mode enabled

JP7

Closed

 

Burst mode disabled

JP7

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U52)

TAG (U52)

Dirty Bit(U66)

64KB

4) 8K x 8

4) 8K x 8

(1) 8K x 8

N/A

(1) 16K x 1

128KB

(4) 32K x 8

NONE

(1) 8K x 8

N/A

(1) 16K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

(1) 16K x 1

512KB

(4) 128K x 8

NONE

(1) 32K x 8

N/A

(1) 64K x 1

Note:You may use a (1) 64K x 1 at U66 for all Cache SRAM sizes .

CACHE JUMPER CONFIGURATION

Size

JP6

JP11

JP12

JP13

JP14

JP15

JP16

64KB

2 & 3

Open

Open

Open

Open

Open

Open

128KB

1 & 2

Open

Open

Closed

Open

Closed

Open

256KB

2 & 3

Open

Closed

Closed

Closed

Closed

Open

512KB

1 & 2

Closed

Closed

Closed

Closed

Closed

Closed

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

OSC1

JP2

JP3

JP8

JP9

JP10

80486DX2- 50 MHz

50MHz

Closed

Closed

1 & 2, 3 & 4

2 & 3

1 & 2

80486DX2- 50 MHz

25MHz

Closed

Closed

1 & 2, 3 & 4

1 & 2

1 & 2

80486DX- 50 MHz

50MHz

Closed

Closed

1 & 2, 3 & 4

1 & 2

1 & 2

80486DX- 33 MHz

66MHz

Closed

Open

1 & 2, 3 & 4

2 & 3

1 & 2

80486DX- 33 MHz

33MHz

Closed

Open

1 & 2, 3 & 4

1 & 2

1 & 2

80486DX- 25 MHz

50MHz

Open

Open

1 & 2, 3 & 4

2 & 3

1 & 2

80486DX- 25 MHz

25MHz

Open

Open

1 & 2, 3 & 4

1 & 2

1 & 2

80486SX- 25 MHz

50MHz

Open

Open

2 & 3

2 & 3

Open

80486SX- 25 MHz

25MHz

Open

Open

2 & 3

1 & 2

Open

80486SX- 20 MHz

40MHz

Open

Open

2 & 3

2 & 3

Open

80486SX- 20 MHz

20MHz

Open

Open

2 & 3

1 & 2

Open

Note:Pins designated should be in the closed position.