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ATLANTIS PENTIUM II

AMERICAN MEGATRENDS, INC.

ATLANTIS PENTIUM II

Device Type

Mainboard

Processor

Pentium II

Processor Speed

233/266/300/333MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

384MB (EDO & SDRAM supported)

Maximum Video Memory

None

Cache

256/512KB (located on Pentium II CPU)

BIOS

AMI

Dimensions

305mm x 244mm

I/O Options

32-bit PCI slots (5), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

CPU fan power

C4

ATX power connector

ATX

Parallel port

CN1

Power LED & keylock

C1/pins 1 - 5

Serial port

CN2

Turbo switch

C1/pins 6 & 7

Serial port

CN3

Green PC connector

C1/pins 8 & 9

PS/2 mouse port

CN4

Green PC LED

C1/pins 10 & 11

IDE interface 2

CN5

Speaker

C1/pins 12 - 15

IDE interface 1

CN6

IDE interface LED

C1/pins 16 & 17

Floppy drive interface

CN7

Soft off power supply

C1/pins 18 & 19

IR connector

IR1

Reset switch

C1/pins 20 & 21

32-bit PCI slots

PC1 - PC5

Chassis fan power

C2

USB connector 1

USB1

Chassis door connector

C3

USB connector 2

USB2

Note: The location of the USB connectors is unidentified.

USER CONFIGURABLE SETTINGS

Function

Label

Position

CMOS memory normal operation

CPW

Open

 

CMOS memory clear

CPW

Closed

DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(1) 1M x 64

None

None

16MB

(1) 2M x 64

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

24MB

(1) 2M x 64

(1) 1M x 64

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

None

32MB

(1) 2M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

None

40MB

(1) 4M x 64

(1) 1M x 64

None

40MB

(1) 2M x 64

(1) 2M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 1M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

56MB

(1) 4M x 64

(1) 2M x 64

(1) 1M x 64

64MB

(1) 8M x 64

None

None

64MB

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

64MB

(1) 4M x 64

(1) 4M x 64

None

72MB

(1) 8M x 64

(1) 1M x 64

None

72MB

(1) 4M x 64

(1) 4M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 1M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

None

80MB

(1) 4M x 64

(1) 4M x 64

(1) 2M x 64

88MB

(1) 8M x 64

(1) 2M x 64

(1) 1M x 64

96MB

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

104MB

(1) 8M x 64

(1) 4M x 64

(1) 1M x 64

112MB

(1) 8M x 64

(1) 4M x 64

(1) 2M x 64

128MB

(1) 16M x 64

None

None

128MB

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

136MB

(1) 16M x 64

(1) 1M x 64

None

136MB

(1) 8M x 64

(1) 8M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

None

144MB

(1) 8M x 64

(1) 8M x 64

(1) 2M x 64

152MB

(1) 16M x 64

(1) 2M x 64

(1) 1M x 64

160MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

None

160MB

(1) 8M x 64

(1) 8M x 64

(1) 4M x 64

168MB

(1) 16M x 64

(1) 4M x 64

(1) 1M x 64

176MB

(1) 16M x 64

(1) 4M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

200MB

(1) 16M x 64

(1) 8M x 64

(1) 1M x 64

208MB

(1) 16M x 64

(1) 8M x 64

(1) 2M x 64

224MB

(1) 16M x 64

(1) 8M x 64

(1) 4M x 64

256MB

(1) 16M x 64

(1) 8M x 64

(1) 8M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

Note: Board accepts EDO & SDRAM memory.

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

FREQ1

FREQ2

FREQ3

FREQ4

233MHz

66MHz

3.5x

Open

Open

Closed

Closed

266MHz

66MHz

4x

Closed

Closed

Open

Closed

300MHz

66MHz

4.5x

Open

Closed

Open

Closed

333MHz

66MHz

5x

Closed

Open

Open

Closed

FLASH BIOS SELECTION

Type

EP1

EP2

MXIC MX28F2000P

Pins 1 & 2 closed

Pins 2 & 3 closed

ATMEL AT29C020

Pins 2 & 3 closed

Pins 2 & 3 closed

SST 29EE010

Pins 2 & 3 closed

Open

SST 29EE020

Pins 2 & 3 closed

Pins 2 & 3 closed

Intel 28F001

Pins 1 & 2 closed

Pins 1 & 2 closed

AMD 29F002T

Pins 2 & 3 closed

Pins 2 & 3 closed