FIRST INTERNATIONAL COMPUTER, INC.

486-VAL

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

VIA

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port,

serial ports (2), VGA feature connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

IDE interface

CN10

Serial port 1

CN3

IDE interace LED

J4

Serial port 2

CN4

Turbo LED

J7

Parallel port

CN5

Turbo switch

J8

VGA port

CN6

Reset switch

J9

Video feature connector

CN7

Speaker

J10

Floppy drive interface

CN9

Power LED & keylock

J11

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Real time clock normal operation

J1

Open

 

Real time clock clear

J1

Closed

»

Flash BIOS write protect enabled

J2

Open

 

Flash BIOS write protect disabled

J2

Closed

»

Monitor type select color

J13

Closed

 

Monitor type select monochrome, VGA or EGA

J13

Open

»

I/O channel ready enabled

J30

Closed

 

I/O channel ready disabled

J30

Open

»

Factory configured - do not alter

JF1

pins 2 & 3 closed

»

Factory configured - do not alter

JF2

pins 2 & 3 closed

»

Factory configured - do not alter

JF3

pins 2 & 3 closed

»

Keyboard IRQ set for AMI 8042 KF

JI1

pins 1 & 2 closed

 

Keyboard IRQ set for another version

JI1

pins 2 & 3 closed

»

PS/2 mouse IRQ set for AMI 8042 KF

JI2

pins 1 & 2 closed

 

PS/2 mouse IRQ set for another version

JI2

pins 2 & 3 closed

»

Local type tri-state

JV2

pins 1 & 2 closed

 

Local type level

JV2

pins 2 & 3 closed

»

Local access for DAC enabled

JV3

pins 1 & 2 closed

 

A10 busline for DAC enabled

JV3

pins 2 & 3 closed

»

Local bus select 86C805 enabled

JV4

pins 1 & 2 closed

 

Local bus select 86C805 disabled

JV4

pins 2 & 3 closed

»

Factory configured - do not alter

JV8

N/A

»

Video interrupt select IRQ5

JV9

pins 1 & 2 closed

 

Video interrupt select IRQ9

JV9

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

DRAM CONFIGURATION (CONTINUED)

Size

Bank 0

Bank 1

Bank 2

Bank 3

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG/M9

TAG/M14

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

(4) 32K x 8

NONE

(1) 8K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

NONE

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

64KB

pins 1 & 2 closed

pins 1 & 2 closed

128KB

pins 2 & 3 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE/SPEED CONFIGURATION

Type/Speed

JC1

JC2

JC3

JC4

JK1

JK2

80486SX/20

pins 2 & 3

pins 2 & 3

pins 2 & 3

Open

pins 1 & 2

pins 1 & 2

80486SX/25

pins 2 & 3

pins 2 & 3

pins 2 & 3

Open

pins 1 & 2

pins 1 & 2

80486SX/33

pins 2 & 3

pins 2 & 3

pins 2 & 3

Open

pins 2 & 3

pins 2 & 3

80487SX/20

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

80487SX/25

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

80486DX/20

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

80486DX/25

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

80486DX/33

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

80486DX/50

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

80486DX2/50i

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

80486DX2/66i

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

Note:Pins designated should be in the closed position.

MONITOR TYPE SELECT

Type

JV5

JV6

JV7

640 x 480/60Hz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

640 x 480/70Hz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

800 x 600/60Hz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

800 x 600/70Hz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

800 x 600/56Hz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

1024 x 768/43Hz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

1024 x 768/60Hz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

1024 x 768/70Hz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

VRAM CONFIGURATION

Size

Bank 0

Bank 1

JV1

512KB

(4) 44256

None

pins 1 & 2 closed

1MB

(4) 44256

(4) 44256

pins 2 & 3 closed