HwMuseum | Index

AMPTRON INTERNATIONAL, INC.

PM-7900

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

260mm x 220mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

External battery

J7

Serial port 2

CN2

Power LED & keylock

J8

Parallel port

CN3

Speaker

J9

Floppy drive interface

CN4

Green PC connector

JP6

IDE interface 2

CN5

32-bit PCI slots

PC1 - PC3

IDE interface 1

CN6

Cache slot

SL1

IDE interface LED

J5

VRM connector

VRM

Reset switch

J6

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Battery type select internal

J7

Pins 2 & 3 closed

 

Battery type select external

J7

Closed

 

CMOS memory clear

J7

Pins 3 & 4 closed

 

Flash BIOS voltage select 12v

JP4

Closed

 

Flash BIOS voltage select 5v

JP4

Open

 

Green PC mode enabled

JP6

Pins 1 & 2 closed

 

Green PC mode disabled

JP6

Open

DIMM/DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(2) 1M x 36

None

None

8MB

None

None

(1) 1M x 64

16MB

(2) 2M x 36

None

None

16MB

(2) 1M x 36

(2) 1M x 36

None

16MB

None

None

(1) 2M x 64

16MB

None

(2) 1M x 36

(1) 1M x 64

24MB

(2) 1M x 36

(2) 2M x 36

None

24MB

None

(2) 2M x 36

(1) 1M x 64

24MB

None

(2) 1M x 36

(1) 2M x 64

32MB

(2) 4M x 36

None

None

32MB

(2) 2M x 36

(2) 2M x 36

None

32MB

None

None

(1) 4M x 64

32MB

None

(2) 2M x 36

(1) 2M x 64

40MB

(2) 1M x 36

(2) 4M x 36

None

40MB

None

(2) 4M x 36

(1) 1M x 64

40MB

None

(2) 1M x 36

(1) 4M x 64

48MB

(2) 4M x 36

(2) 2M x 36

None

48MB

None

(2) 4M x 36

(1) 2M x 64

48MB

None

(2) 2M x 36

(1) 4M x 64

64MB

(2) 8M x 36

None

None

64MB

(2) 4M x 36

(2) 4M x 36

None

DIMM/DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

64MB

None

None

(1) 8M x 64

64MB

None

(2) 4M x 36

(1) 4M x 64

72MB

(2) 8M x 36

(2) 1M x 36

None

72MB

None

(2) 8M x 36

(1) 1M x 64

72MB

None

(2) 1M x 36

(1) 8M x 64

80MB

(2) 2M x 36

(2) 8M x 36

None

80MB

None

(2) 8M x 36

(1) 2M x 64

80MB

None

(2) 2M x 36

(1) 8M x 64

96MB

(2) 8M x 36

(2) 4M x 36

None

96MB

None

(2) 8M x 36

(1) 4M x 64

96MB

None

(2) 4M x 36

(1) 8M x 64

128MB

(2) 8M x 36

(2) 8M x 36

None

128MB

None

(2) 8M x 36

(1) 8M x 64

Note: Board accepts EDO memory.

DIMM VOLTAGE CONFIGURATION

Voltage

JP7

JP8

JP9

3.3v

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

5v

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CACHE CONFIGURATION

Size

SL1

TAG

256KB

256KB module installed

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

512KB

512KB module installed

(1) 16K/32K x 8

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP5

JP10

JP11

JP12

JP13

100MHz

50MHz

2x

2 & 3

Closed

Closed

Closed

Open

120MHz

60MHz

2x

1 & 2

Open

Closed

Closed

Open

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AMD)

CPU speed

Clock speed

Multiplier

JP5

JP10

JP11

JP12

JP13

100MHz

66MHz

1.5x

1 & 2

Closed

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP5

JP10

JP11

JP12

JP13

75MHz

50MHz

1.5x

2 & 3

Closed

Closed

Open

Open

90MHz

60MHz

1.5x

1 & 2

Open

Closed

Open

Open

100MHz

66MHz

1.5x

1 & 2

Closed

Open

Open

Open

120MHz

60MHz

2x

1 & 2

Open

Closed

Closed

Open

133MHz

66MHz

2x

1 & 2

Closed

Open

Closed

Open

150MHz

60MHz

2.5x

1 & 2

Open

Closed

Closed

Closed

166MHz

66MHz

2.5x

1 & 2

Closed

Open

Closed

Closed

180MHz

60MHz

3x

1 & 2

Open

Closed

Open

Closed

200MHz

66MHz

3x

1 & 2

Closed

Open

Open

Closed

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP14

 

3.3v

Pins 2 & 3 closed

»

3.5v

Pins 1 & 2 closed