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ATC-1020

A-TREND TECHNOLOGY CORPORATION

ATC-1020

Processor

CX M1/AM K5/Pentium

Processor Speed

75/90/100/120/133/150/166/180/200MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

Award

Dimensions

280mm x 220mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, IR connector, USB connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

CN1

Reset switch

J1 pins 1 & 2

Parallel port

CN2

Green PC connector

J1 pins 4 & 5

Serial port 1

CN3

Turbo LED

J1 pins 7 & 8

Serial port 2

CN4

IDE interface LED

J1 pins 10 & 11

IDE interface 1

CN5

Speaker

J1 pins 12 - 15

IDE interface 2

CN6

Power LED & keylock

J1 pins 17 - 21

PS/2 mouse port

CN7

32-bit PCI slots

PC1 – PC4

Chassis fan power

FAN

Cache slot

SL1

IR connector

IR

USB connector

USB

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

JP8

Open

 

CMOS memory clear

JP8

Closed

»

Flash BIOS write protect enabled

JP19

Pins 2 & 3 closed

 

Flash BIOS write protect disabled

JP19

Pins 1 & 2 closed

DIMM CONFIGURATION

Size

Bank 2

8MB

(1) 1M x 64

16MB

(1) 2M x 64

32MB

(1) 4M x 64

64MB

(1) 8M x 64

Note: Do not install DIMM and SIMM at the same time.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

80MB

(2) 8M x 36

(2) 2M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

None

Note: Board accepts EDO memory. Banks are interchangeable.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

256KB

None

256KB module installed

(1) 16K/32K x 8

256KB

(2) 32K x 32

Not installed

(1) 16K/32K x 8

512KB

(2) 64K x 32

Not installed

(1) 16K/32K x 8

Note: The location of the TAG is unidentified.

CACHE TAG CONFIGURATION

Setting

JP17

Enabled

Closed

Disabled

Open

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP5

JP6

JP7

JP9

JP10

120MHz

50MHz

2x

Open

Open

Open

1 & 2

2 & 3

133MHz

55MHz

50MHz

Closed

Closed

N/A

1 & 2

2 & 3

150MHz

60MHz

2x

Open

Closed

Closed

1 & 2

2 & 3

166MHz

66MHz

2x

Closed

Open

Closed

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AMD)

CPU speed

Clock speed

Multiplier

JP5

JP6

JP7

JP9

JP10

75MHz

50MHz

1.5x

Open

Open

Open

1 & 2

1 & 2

90MHz

60MHz

1.5x

Open

Closed

Closed

1 & 2

1 & 2

100MHz

66MHz

1.5x

Closed

Open

Closed

1 & 2

1 & 2

120MHz

60MHz

1.5x

Open

Closed

Closed

1 & 2

1 & 2

133MHz

66MHz

1.5x

Closed

Open

Closed

1 & 2

1 & 2

166MHz

66MHz

2x

Closed

Open

Closed

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP5

JP6

JP7

JP9

JP10

75MHz

50MHz

1.5x

Open

Open

Open

1 & 2

1 & 2

90MHz

60MHz

1.5x

Open

Closed

Closed

1 & 2

1 & 2

100MHz

66MHz

1.5x

Closed

Open

Closed

1 & 2

1 & 2

120MHz

60MHz

2x

Open

Closed

Closed

1 & 2

2 & 3

133MHz

66MHz

2x

Closed

Open

Closed

1 & 2

2 & 3

150MHz

60MHz

2.5x

Open

Closed

Closed

2 & 3

2 & 3

166MHz

66MHz

2.5x

Closed

Open

Closed

2 & 3

2 & 3

180MHz

60MHz

3x

Open

Closed

Closed

2 & 3

1 & 2

200MHz

66MHz

3x

Closed

Open

Closed

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP11

JP14

CX6X86

Pins 1 & 2 closed

Pins 1 & 2 closed

CX6X86L

Pins 2 & 3 closed

Pins 7 & 8 closed

AM K5

Pins 1 & 2 closed

Pins 1 & 2 closed

P54C STD

Pins 1 & 2 closed

Pins 3 & 4 closed

P54C VRE

Pins 1 & 2 closed

Pins 1 & 2 closed

P55C

Pins 2 & 3 closed

Pins 1 & 2 closed

CPU VOLTAGE SELECTION (P55C ONLY)

Voltage

JP14

2.7v

Pins 9 & 10 closed

2.8v

Pins 7 & 8 closed

2.9v

Pins 5 & 6 closed

3.3v

Pins 3 & 4 closed

3.5v

Pins 1 & 2 closed