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486-PIO-3 (REV. A1)

FIRST INTERNATIONAL COMPUTER, INC.

486-PIO-3 (REV. A1)

Processor

80486SX/UMCU5SD/CX486DX/80486DX/UMCU5S/UMCU5SLV/ CX486DX2/TI486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/

80486DX4ODP/CX486DX4/TI486DX4/AM486DX4/(SL)AM486DX4/ 80486DX4/AMK5/P24D/P24S/P24T/CX5X86

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/133(internal)MHz

Chip Set

VIA

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512/1024KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), IR connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

BAT

Serial port 1

CN1

Chassis fan power

C1

Serial port 2

CN2

Green PC connector

C3

Parallel port

CN3

Outlet connector

C4

Floppy drive interface

CN4

Turbo/green PC LED

C5

IDE interface 2

CN5

IDE interface LED

C6

IDE interface 1

CN6

Reset switch

C7

IR connector

IR

Power LED & keylock

C8

32-bit PCI slots

PC1 - PC3

Speaker

C9

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Flash BIOS type select Intel 28F00BX-T1

J1

Pins 1 & 2 closed

 

Flash BIOS type select SST 29EE010

J1

Pins 2 & 3 closed

KB_LOCK mode select KB_LOCK

J2

Pins 2 & 3 closed

 

KB_LOCK mode select IOCHCK

J2

Pins 1 & 2 closed

Turbo LED used as turbo LED

J3

Open

 

Turbo LED used as green PC LED

J3

Closed

Password normal operation

JCP

Open

 

Password clear

JCP

Closed

Parallel port bidirectional

JI1

Open

 

Parallel port unidirectional

JI1

Closed

 

Jumper information unavailable

JP1

Unidentified

 

Jumper information unavailable

JP2

Unidentified

 

Monitor type select monochrome/EGA/VGA

VIDEO

Closed

 

Monitor type select CGA

VIDEO

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(1) 256K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

None

5MB

(1) 1M x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

17MB

(1) 4M x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

32MB

(1) 8M x 36

None

33MB

(1) 8M x 36

(1) 256K x 36

36MB

(1) 8M x 36

(1) 1M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 8K/32K x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

256KB (B)

(4) 64K x 8

None

(1) 32K x 8

512KB (A)

(4) 128K x 8

None

(1) 32K x 8

512KB (B)

(4) 64K x 8

(4) 64K x 8

(1) 32K/64K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 64K/128K x 8

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

JS3

JS4

JS5

JS6

128KB

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

256KB (A)

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

256KB (B)

2 & 3

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

512KB (A)

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

512KB (B)

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

1MB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION

Speed

JK1

JK2

JK3

JK4

25MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

33MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

40MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50iMHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

66iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

75iMHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

80iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

100iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

133iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

JC1

JC2

JC3

JC4

JC5

80486SX

2 & 3

2 & 3

Open

Open

Open

UMC U5SD

1 & 2

1 & 2

Open

Open

Open

CX486DX

1 & 2

1 & 2

Open

Open

Open

80486DX

1 & 2

1 & 2

Open

2 & 3

Open

U5S

2 & 3

2 & 3

Open

Open

Open

U5SLV

2 & 3

2 & 3

Open

Open

Open

CX486DX2

1 & 2

1 & 2

Open

Open

Open

TI486DX2

1 & 2

1 & 2

Open

Open

Open

AM486DX2

1 & 2

1 & 2

Closed

Open

Open

(SL)AM486DX2

1 & 2

1 & 2

Open

2 & 3

Open

80486DX2

1 & 2

1 & 2

Open

2 & 3

Open

CX486DX4

1 & 2

1 & 2

Open

1 & 2

Open

TI486DX4

1 & 2

1 & 2

Open

Open

Open

AM486DX4

1 & 2

1 & 2

Open

Open

Open

(SL)AM486DX4

1 & 2

1 & 2

Open

1 & 2

Open

80486DX4ODP

1 & 2

1 & 2

Open

1 & 2

Open

80486DX4 (2x)

1 & 2

1 & 2

Open

2 & 3

Open

80486DX4 (3x)

1 & 2

1 & 2

Open

1 & 2

Open

AM X5

1 & 2

1 & 2

Open

2 & 3

Open

P24D

1 & 2

1 & 2

Open

1 & 2

Open

P24S

1 & 2

1 & 2

Open

2 & 3

Open

P24T

1 & 2

1 & 2

Open

1 & 2

Closed

CX5X86

1 & 2

1 & 2

Open

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

RNA

RNC

RNI

80486SX

Not installed

Not installed

Pins 1 - 8 closed

UMC U5SD

Installed

Not installed

Not installed

CX486DX

Not installed

Installed

Not installed

80486DX

Not installed

Not installed

Pins 1 - 8 closed

U5S

Installed

Not installed

Not installed

U5SLV

Installed

Not installed

Not installed

CX486DX2

Not installed

Installed

Not installed

TI486DX2

Not installed

Installed

Not installed

AM486DX2

Installed

Not installed

Not installed

(SL)AM486DX2

Not installed

Not installed

Pins 1 - 8 closed

80486DX2

Not installed

Not installed

Pins 1 - 8 closed

CX486DX4

Not installed

Not installed

Pins 1 - 8 closed

TI486DX4

Not installed

Installed

Not installed

AM486DX4

Installed

Not installed

Not installed

(SL)AM486DX4

Not installed

Not installed

Pins 1 - 8 closed

80486DX4ODP

Not installed

Not installed

Pins 1 - 8 closed

80486DX4 (2x)

Not installed

Not installed

Pins 1 - 8 closed

80486DX4 (3x)

Not installed

Not installed

Pins 1 - 8 closed

AM X5

Not installed

Not installed

Pins 1 - 8 closed

P24D

Not installed

Not installed

Pins 1 - 8 closed

P24S

Not installed

Not installed

Pins 1 - 8 closed

P24T

Not installed

Not installed

Pins 1 - 8 closed

CX5X86

Not installed

Not installed

Pins 1 - 8 closed

CPU VOLTAGE SELECTION

Voltage

C2

JPW1

JPW2

3.3v

Open

Pins 1 & 2 closed

Open

3.45v

Open

Pins 2 & 3 closed

Open

3.6v

Open

Open

Pins 1 & 2 closed

4v

Open

Open

Pins 2 & 3 closed

5v

Pins 1 & 2, 3 & 4 closed

N/A

N/A

PCI BUS SPEED SELECTION

CPU Clock

JCK

JT1

<= 33MHz (PCI clock = CPU clock)

Pins 1 & 2 closed

Pins 1 & 2 closed

 

>33 MHz (PCI clock = CPU clock/2)

Pins 2 & 3 closed

Pins 2 & 3 closed

DMA CHANNEL SELECTION

Channel

JW3

JW4

1

Pins 1 & 2 closed

Pins 1 & 2 closed

 

3

Pins 2 & 3 closed

Pins 2 & 3 closed

SERIAL PORT 2 SELECTION

Setting

JW1

JW2

Used as Serial port 2

Pins 1 & 2 closed

Pins 1 & 2 closed

Used as IR connector

Pins 2 & 3 closed

Pins 2 & 3 closed