GEMLIGHT COMPUTER, LTD.

GMB-P56IPS (VER. 1.06)

Processor

CX M1/AM K5/Pentium

Processor Speed

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

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB (EDO supported)

Maximum Video Memory

None

Cache

256/512KB

BIOS

AMI/Award

Dimensions

270mm x 220mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J1

IR connector

J12

Green PC connector

J2

Parallel port

J13

Green PC LED

J3

Serial port 2

J14

Speaker

J4

Serial port 1

J15

IDE interface LED

J5

USB connector 1 (optional)

J16

Power LED & keylock

J6

USB connector 2 (optional)

J17

IDE interface 1

J9

PS/2 mouse interface

J18

IDE interface 2

J10

Cache slot

SL1

Floppy drive interface

J11

32-bit PCI slots

PC1 - PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Flash BIOS voltage select 12v

JP4

Pins 1 & 2 closed

 

Flash BIOS voltage select 5v

JP4

Pins 2 & 3 closed

»

CMOS memory normal operation

JP5

Open

 

CMOS memory clear

JP5

Closed

DIMM/DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

None

None

(1) 1M x 64

8MB

(2) 1M x 32

None

None

16MB

(2) 1M x 32

(2) 1M x 32

None

16MB

(2) 2M x 32

None

None

16MB

None

None

(1) 2M x 64

24MB

(2) 2M x 32

(2) 1M x 32

None

24MB

None

(2) 1M x 32

(1) 2M x 64

32MB

None

(2) 4M x 32

None

32MB

None

None

(1) 4M x 64

32MB

(2) 2M x 32

(2) 2M x 32

None

32MB

None

(2) 2M x 32

(1) 2M x 64

40MB

(2) 4M x 32

(2) 1M x 32

None

40MB

None

(2) 1M x 32

(1) 4M x 64

40MB

None

(1) 4M x 64

(1) 1M x 64

48MB

(2) 2M x 32

(2) 4M x 32

None

48MB

None

(2) 2M x 32

(1) 4M x 64

48MB

None

(2) 4M x 32

(1) 2M x 64

64MB

(2) 8M x 32

None

None

64MB

None

None

(1) 8M x 64

64MB

None

(2) 4M x 32

(1) 4M x 64

72MB

(2) 8M x 32

(2) 1M x 32

None

72MB

None

(2) 1M x 32

(1) 8M x 64

72MB

None

(2) 8M x 32

(1) 1M x 64

DIMM/DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

80MB

(2) 8M x 32

(2) 2M x 32

None

80MB

None

(2) 8M x 32

(1) 2M x 64

80MB

None

(2) 2M x 32

(1) 8M x 64

96MB

(2) 8M x 32

(2) 4M x 32

None

96MB

None

(2) 8M x 32

(1) 4M x 64

96MB

None

(2) 4M x 32

(1) 8M x 64

128MB

(2) 4M x 32

(2) 4M x 32

None

Note: Board accepts EDO memory.

DRAM VOLTAGE CONFIGURATION

Voltage

S7

S8

3.3v

Pins 2 & 3 closed

Pins 2 & 3 closed

5v

Pins 1 & 2 closed

Pins 1 & 2 closed

CACHE CONFIGURATION

Size

Bank 0

SL1

TAG

256KB

(2) 32K x 32

Not installed

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

512KB

(2) 32K x 32

256KB module installed

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

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP6

JP7

S1

S2

S3

120MHz

50MHz

2x

1 & 2

2 & 3

Closed

Closed

Open

133MHz

55MHz

2x

1 & 2

2 & 3

Open

Closed

Open

150MHz

60MHz

2x

1 & 2

2 & 3

Closed

Open

Open

166MHz

66MHz

2x

1 & 2

2 & 3

Open

Open

Open

200MHz

66MHz

3x

2 & 3

1 & 2

Open

Open

Closed

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (AMD)

CPU speed

Clock speed

Multiplier

JP6

JP7

S1

S2

S3

75MHz

50MHz

1.5x

1 & 2

1 & 2

Closed

Closed

Open

90MHz

60MHz

1.5x

1 & 2

1 & 2

Closed

Open

Open

100MHz

66MHz

1.5x

1 & 2

1 & 2

Open

Open

Open

120MHz

60MHz

1.5x

1 & 2

1 & 2

Closed

Open

Open

150MHz

66MHz

1.5x

1 & 2

1 & 2

Open

Open

Open

166MHz

66MHz

2.5x

2 & 3

2 & 3

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP6

JP7

S1

S2

S3

75MHz

50MHz

1.5x

1 & 2

1 & 2

Closed

Closed

Open

90MHz

60MHz

1.5x

1 & 2

1 & 2

Closed

Open

Open

100MHz

66MHz

1.5x

1 & 2

1 & 2

Open

Open

Open

120MHz

60MHz

2x

1 & 2

2 & 3

Closed

Open

Open

133MHz

66MHz

2x

1 & 2

2 & 3

Open

Open

Open

150MHz

60MHz

2.5x

2 & 3

2 & 3

Closed

Open

Open

166MHz

66MHz

2.5x

2 & 3

2 & 3

Open

Open

Open

200MHz

66MHz

3x

2 & 3

1 & 2

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

V core

JP1

S4

S5

S6

3.4v (single)

N/A

Closed

Closed

Closed

Closed

3.4v (dual)

2.8v

Closed

Open

Open

Open

3.5v (single)

N/A

Open

Closed

Closed

Closed