AMERICAN MEGATRENDS, INC.

APOLLO

Processor

Pentium

Processor Speed

75/90/100/120/133MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

AMI

Dimensions

259mm x 216mm

I/O Options

32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse interface

CN1

External battery

J6

Serial port 2

CN2

Chassis fan power

J11

Serial port 1

CN3

Reset switch

J12

Parallel port

CN4

Speaker

J13

Floppy drive interface

CN5

Power LED & keylock

J14

IDE interface 1

CN6

IDE interface LED

JP1

IDE interface 2

CN7

32-bit PCI slots

PC1 - PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Cache type select write back

J1

Open

 

Cache type select write through

J1

Pins 1 & 2 closed

»

Monitor type select monochrome/EGA/VGA

J2

Open

 

Monitor type select CGA

J2

Closed

»

Pipeline mode enabled

J3

Closed

 

Pipeline mode disabled

J3

Open

»

Flash BIOS voltage select 5v

J4

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

J4

Pins 1 & 2 closed

 

CPU bus speed select PCLK/3

J5

Pins 1 & 2 closed

 

CPU bus speed select PCLK/4

J5

Pins 2 & 3 closed

 

PCI/CPU bus speed ratio select 1/2

J8

Closed

 

PCI/CPU bus speed ratio select 3/2

J8

Open

»

CMOS memory normal operation

JCP

Open

 

CMOS memory clear

JCP

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

10MB

(2) 1M x 36

(2) 256K x 36

16MB

(2) 2M x 36

None

18MB

(2) 2M x 36

(2) 256K x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 2M x 36

(2) 2M x 36

34MB

(2) 4M x 36

(2) 256K x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 4M x 36

(2) 4M x 36

64MB

(2) 8M x 36

None

66MB

(2) 8M x 36

(2) 256K x 36

72MB

(2) 8M x 36

(2) 1M x 36

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

Note: Board accepts EDO memory. The location of the Banks 0 & 1 are unidentified. Board also accepts x 32 SIMMs.

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB (A) mixed voltage

(8) 32K x 8

(1) 8K x 8

256KB (B) 3.3v

(8) 32K x 8

(1) 8K x 8

512KB mixed voltage

(8) 64K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

J9

J10

JC1

JPW1

JPW2

JPW3

JPW4

256KB (A)

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

256KB (B)

1 & 2

2 & 3

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

512KB

2 & 3

1 & 2

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

75MHz

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

90MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

100MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

120MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

133MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

CPU VOLTAGE SELECTION

Voltage

JVR

3.3v

Pins 1 & 2 closed

3.45v

Pins 3 & 4 closed

3.6v

Pins 5 & 6 closed