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PCI486 AL2

COMPUTREND SYSTEMS, INC.

PCI486 AL2

Processor

UMC486SX/80486SX/SL80486SX/UMC486DX/AM486DX/80486DX/ SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/P24T

Processor Speed

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

Chip Set

ALI

Max. Onboard DRAM

64MB

Cache

128/256/512KB

BIOS

AMI

Dimensions

270mm x 220mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Turbo LED

JFP pins 12 & 13

Serial port 2

CN2

Turbo switch

JFP pins 15 - 17

Parallel port

CN3

Reset switch

JFP pins 19 & 20

Floppy drive interface

CN4

IDE interface LED

JFPA

IDE interface 2

CN5

Chassis fan power

JFAN

IDE interface 1

CN6

Green PC connector (monitor)

JG1

External battery

JB1

Green PC LED

JG2

Power LED & keylock

JFP pins 1 - 5

Green PC connector

JG3

Speaker

JFP pins 7 - 10

32-bit PCI slots

PC1 - PC3

Note: The location of JFAN is unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

Battery type select internal

JB1

Pins 2 & 3 closed

 

Battery type select external

JB1

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

None

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

16MB

(1) 4M x 36

None

None

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

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

128KB

(4) 32K x 8

None

(1) 8K/16K/32 x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 16K/32K x 8

256KB (B)

(4) 64K x 8

None

(1) 16K/32K x 8

512KB

(4) 128K x 8

None

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JS1

JS2

JS3

128KB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

256KB (A)

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

256KB (B)

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

512KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JC1

JC2

JC3

JC4

UMC486SX

2 & 3

2 & 3

Open

1 & 2

80486SX

Open

2 & 3

Open

Open

SL80486SX

Open

2 & 3

Open

2 & 3

UMC486DX

2 & 3

1 & 2, 3 & 4

Open

1 & 2

AM486DX

2 & 3

1 & 2, 3 & 4

Open

Open

80486DX

2 & 3

1 & 2, 3 & 4

Open

Open

SL80486DX

2 & 3

1 & 2, 3 & 4

Open

2 & 3

CX486DX2

2 & 3

1 & 2, 3 & 4

4 & 5

4 & 5

AM486DX2 (V8B)

2 & 3

1 & 2, 3 & 4

1 & 2 5 & 6

2 & 3

AM486DX2 (V8T)

2 & 3

1 & 2, 3 & 4

Open

Open

AM486DX2

2 & 3

1 & 2, 3 & 4

Open

Open

80486DX2

2 & 3

1 & 2, 3 & 4

Open

Open

SL80486DX2

2 & 3

1 & 2, 3 & 4

Open

2 & 3

SL80486DX2 (OD)

1 & 2

1 & 2, 3 & 4

Open

2 & 3

AM486DX4 (V8B)

2 & 3

1 & 2, 3 & 4

1 & 2 5 & 6

2 & 3

AM486DX4 (V8T)

2 & 3

1 & 2, 3 & 4

Open

Open

80486DX4

2 & 3

1 & 2, 3 & 4

Open

2 & 3

P24D

2 & 3

1 & 2, 3 & 4

1 & 2

2 & 3

P24T

2 & 3

1 & 2, 3 & 4

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

JC5

JC6

JC7

JC8

JC9

UMC486SX

1 & 2

1 & 2

1 & 2

Closed

Open

80486SX

1 & 2

Open

1 & 2

Open

Open

SL80486SX

2 & 3

2 & 3

1 & 2

Closed

Open

UMC486DX

1 & 2

1 & 2

1 & 2

Closed

Open

AM486DX

1 & 2

Open

1 & 2

Open

Open

80486DX

1 & 2

Open

1 & 2

Open

Open

SL80486DX

2 & 3

2 & 3

1 & 2

Closed

Open

CX486DX2

4 & 5

4 & 5

1 & 2

Closed

Open

AM486DX2 (V8B)

2 & 3

2 & 3

2 & 3, 4 & 5

Closed

Open

AM486DX2 (V8T)

1 & 2

Open

1 & 2

Open

Open

AM486DX2

1 & 2

Open

1 & 2

Open

Open

80486DX2

1 & 2

Open

1 & 2

Open

Open

SL80486DX2

2 & 3

2 & 3

1 & 2

Closed

Open

SL80486DX2 (OD)

2 & 3

2 & 3

1 & 2

Closed

Open

AM486DX4 (V8B)

2 & 3

2 & 3

2 & 3, 4 & 5

Closed

Open

AM486DX4 (V8T)

1 & 2

Open

1 & 2

Open

Open

80486DX4

2 & 3

2 & 3

1 & 2

Closed

Open

P24D

2 & 3

2 & 3

2 & 3, 4 & 5

Closed

Open

P24T

2 & 3

2 & 3

2 & 3, 4 & 5

Closed

Open

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JK1

JK2

JK3

25MHz

Open

Pins 2 & 3 closed

Open

33MHz

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

Open

40MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Closed

50iMHz

Open

Pins 2 & 3 closed

Open

66iMHz

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

Open

75iMHz

Open

Pins 2 & 3 closed

Open

80iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Closed

100iMHz

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

Open

CPU VOLTAGE CONFIGURATION

Voltage

J4

JP8

 

3.45v

Pins 4 & 10, 5 & 11, 6 & 12 closed

Open

 

4v

Pins 4 & 10, 5 & 11, 6 & 12 closed

Closed

Ľ

5v

Pins 1 & 7, 2 & 8, 3 & 9 closed

Open

DMA CONFIGURATION

DMA

JP17

JP18

JP23

JP24

DMA 1

Closed

Closed

Open

Open

DMA 3

Open

Open

Closed

Closed