MB-8500TVX Motherboard Settings and Configuration

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

AMI

Dimensions

220mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Power LED & keylock

J13 pins 5 - 9

Serial port 2

CN2

Turbo LED

J13 pins 10 & 11

Parallel port

CN3

Reset switch

J13 pins 12 & 13

Floppy drive interface

CN4

Green PC connector

J13 pins 17 & 18

IDE interface 2

CN5

IDE interface LED

J13 pins 20 & 21

IDE interface 1

CN6

+5v ground

J13 pins 25 & 26

USB connector

J3

IR connector

J14

PS/2 mouse interface

J5

Chassis fan power

JP13

Speaker

J13 pins 1 - 4

32-bit PCI slots

PC1 - PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

Flash BIOS voltage select 12v

JP3

Pins 2 & 3 closed

Flash BIOS voltage select 5v

JP3

Pins 1 & 2 closed

»

CMOS memory normal operation

JP4

Open

CMOS memory clear

JP4

Closed

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

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.

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB

(2) 32K x 32

(1) 8K/32K x 8

512KB

(2) 64K x 32

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP7

256KB

Open

512KB

Closed

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

JP5

JP8

JP9

120MHz

50MHz

2x

1 & 2, 3 & 4

Open

See note

133MHz

55MHz

2x

Open

Open

See note

150MHz

60MHz

2x

1 & 2

Open

See note

166MHz

66MHz

2x

3 & 4

Open

See note

Note: Pins designated should be in the closed position. If Rev. 2.2 is used, set JP9 to open. If Rev. 2.3 is used, set JP9 to closed.

CPU SPEED SELECTION (AMD)

CPU speed

Clock speed

Multiplier

JP5

JP8

JP9

75MHz

50MHz

1.5x

1 & 2, 3 & 4

Open

Open

90MHz

60MHz

1.5x

1 & 2

Open

Open

100MHz

66MHz

1.5x

3 & 4

Open

Open

120MHz

60MHz

1.5x

1 & 2

Open

Open

133MHz

66MHz

1.5x

3 & 4

Open

Open

150MHz

60MHz

2x

1 & 2

Open

Closed

166MHz

66MHz

2x

3 & 4

Open

Closed

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP5

JP8

JP9

75MHz

50MHz

1.5x

1 & 2, 3 & 4

Open

Open

90MHz

60MHz

1.5x

1 & 2

Open

Open

100MHz

66MHz

1.5x

3 & 4

Open

Open

120MHz

60MHz

2x

1 & 2

Open

Closed

133MHz

66MHz

2x

3 & 4

Open

Closed

150MHz

60MHz

2.5x

1 & 2

Closed

Closed

166MHz

66MHz

2.5x

3 & 4

Closed

Closed

180MHz

60MHz

3x

1 & 2

Closed

Open

200MHz

66MHz

3x

3 & 4

Closed

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP6

JP11

CX M1

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

AM K5 (PrxxxAB/AC/AF)

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

P54C/CQS/CT

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

AM K5 (PrxxxAH/AJ/AK)

Pins 2 & 3 closed

Open

P55C/CT

Pins 2 & 3 closed

Open

CPU VOLTAGE SELECTION (SINGLE)

Voltage

JP12

3.4v

Closed

3.5v

Open

CPU VOLTAGE SELECTION (DUAL)

Voltage

V core

JP12

JP14

3.4v

2.6v

Closed

Closed

3.4v

2.9v

Open

Closed

3.5v

2.6v

Closed

Open

3.5v

2.9v

Open

Open