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





80486VESA

FREE COMPUTER TECHNOLOGY, INC.

80486VESA

Processor

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

Processor Speed

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

Chip Set

SIS

Max. Onboard DRAM

32MB

SRAM Cache

64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slot (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Speaker

JP17

Reset switch

JP14

Power LED & keylock

JP18

Turbo switch

JP15

32-bit VESA card (2)

S1 & S2

Turbo LED

JP16

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP2

Open

 

Monitor type select monochrome

JP2

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

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

CPU SPEED CONFIGURATION

Speed

JP6

JP7

JP11

J19

JP20

20MHz

Closed

Closed

pins 1 & 2

Open

Open

25MHz

Open

Closed

pins 1 & 2

Open

Open

33MHz

Closed

Open

pins 1 & 2

Open

Open

40MHz

Closed

Closed

pins 2 & 3

Closed

Closed

50i MHz

Open

Closed

pins 1 & 2

Open

Open

50MHz

Open

Closed

pins 2 & 3

Closed

Closed

66i MHz

Closed

Open

pins 1 & 2

Open

Open

Note:Pins designated should be in the closed postion.

CPU TYPE CONFIGURATION

CPU Type

JP9

JP10

JP22

JP23

80486SX PQFP

pins 1 & 2, 3 & 4

pins 1 & 2

Closed

Open

80486DX PQFP

pins 1 & 2, 3 & 4

pins 1 & 2

Closed

Open

80486SX PGA

pins 2 & 3

Open

Open

Closed

80487SX PGA

pins 1 & 2 and 3 & 4

pins 2 & 3

Open

Closed

80486DX PGA

pins 1 & 2 and 3 & 4

pins 1 & 2

Open

Closed

ODP486SX PGA

pins 1 & 2 and 3 & 4

pins 2 & 3

Open

Closed

80486DX2 PGA

pins 1 & 2 and 3 & 4

pins 1 & 2

Open

Closed

Note:Pins designated should be in the closed postion.

SRAM CONFIGURATION

Size

Cache

Location

TAG

JP12

JP13

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

Open

Open

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

Closed

pins 1 & 2

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

Closed

pins 2 & 3

Note:Pins designated should be in the closed position.