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PR5 PCI (REV. 1.0)

ABIT COMPUTER CORPORATION

PR5 PCI (REV. 1.0)

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

Award

Dimensions

330mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Reset switch

J6 pins 1 & 2

Serial port 2

CN2

Green PC connector

J6 pins 6 & 7

Parallel port

CN3

Turbo LED

J6 pins 8 & 9

Floppy drive interface

CN4

Speaker

J6 pins 11 - 14

IDE interface 2

CN5

Power LED & keylock

J6 pins 16 - 20

IDE interface 1

CN6

IR connector

JP2

USB connector

CN7

Chassis fan power

JP9

PS/2 mouse port

J4

32-bit PCI slots

PC1 - PC3

IDE interface LED

J5

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

DS8

Off

»

CMOS memory normal operation

JP3

Pins 1 & 2 closed

 

CMOS memory clear

JP3

Pins 2 & 3 closed

»

Flash BIOS voltage select 12v

JP8

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP8

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 32

None

16MB

(2) 2M x 32

None

16MB

(2) 1M x 32

(2) 1M x 32

24MB

(2) 2M x 32

(2) 1M x 32

32MB

(2) 4M x 32

None

32MB

(2) 2M x 32

(2) 2M x 32

40MB

(2) 4M x 32

(2) 1M x 32

48MB

(2) 4M x 32

(2) 2M x 32

64MB

(2) 8M x 32

None

64MB

(2) 4M x 32

(2) 4M x 32

72MB

(2) 8M x 32

(2) 1M x 32

80MB

(2) 8M x 32

(2) 2M x 32

96MB

(2) 8M x 32

(2) 4M x 32

128MB

(2) 8M x 32

(2) 8M x 32

Note: Board accepts EDO memory. Banks are interchangeable. If using this configuration, DIMM sockets must be empty.

DIMM CONFIGURATION

Size

Bank 2

Bank 3

8MB

(1) 1M x 64

None

16MB

(1) 2M x 64

None

16MB

(1) 1M x 64

(1) 1M x 64

24MB

(1) 2M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

DIMM CONFIGURATION (CON’T)

Size

Bank 2

Bank 3

32MB

(1) 2M x 64

(1) 2M x 64

40MB

(1) 4M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

64MB

(1) 4M x 64

(1) 4M x 64

72MB

(1) 8M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

Note: Banks are interchangeable. If using this configuration, SIMM sockets must be empty.

CACHE CONFIGURATION

Size

Bank 0

SL1

TAG

256KB

(2) 32K x 32

Not installed

(1) 32K x 8

512KB

(2) 32K x 32

256KB module installed

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

256KB

Open

512KB

Closed

CPU SPEED SELECTION (CYRIX)

CPU speed

Clock speed

Multiplier

DS/1

DS/2

DS/3

DS/4

DS/5

DS/6

DS/7

120MHz

50MHz

2x

Off

On

On

On

Off

Off

Off

133MHz

55MHz

2x

Off

On

Off

Off

On

Off

Off

150MHz

60MHz

2x

Off

On

Off

On

On

Off

Off

166MHz

66MHz

2x

Off

On

On

Off

On

Off

Off

CPU SPEED SELECTION (AMD)

CPU speed

Clock speed

Multiplier

DS/1

DS/2

DS/3

DS/4

DS/5

DS/6

DS/7

75MHz

50MHz

1.5x

Off

Off

On

On

Off

Off

Off

90MHz

60MHz

1.5x

Off

Off

Off

On

On

Off

Off

100MHz

66MHz

1.5x

Off

Off

On

Off

On

Off

Off

100MHz

55MHz

1.5x

Off

Off

Off

Off

On

Off

Off

120MHz

60MHz

1.5x

Off

Off

Off

On

On

Off

Off

133MHz

66MHz

1.5x

Off

Off

On

Off

On

Off

Off

150MHz

60MHz

2x

Off

On

Off

On

On

Off

Off

166MHz

66MHz

2x

Off

On

On

Off

On

Off

Off

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

DS/1

DS/2

DS/3

DS/4

DS/5

DS/6

DS/7

75MHz

50MHz

1.5x

Off

Off

On

On

Off

Off

Off

90MHz

60MHz

1.5x

Off

Off

Off

On

On

Off

Off

100MHz

66MHz

1.5x

Off

Off

On

Off

On

Off

Off

120MHz

60MHz

2x

Off

On

Off

On

On

Off

Off

133MHz

66MHz

2x

Off

On

On

Off

On

Off

Off

150MHz

60MHz

2.5x

On

On

Off

On

On

Off

Off

166MHz

66MHz

2.5x

On

On

On

Off

On

Off

Off

200MHz

66MHz

3x

On

Off

On

Off

On

Off

Off

CPU VOLTAGE SELECTION

Voltage

VC/1

VC/2

VC/3

VC/4

VC/5

VC/6

VC/7

VC/8

 

2.5v

Off

Off

Off

Off

On

Off

Off

On

 

2.7v

Off

Off

Off

On

Off

Off

Off

On

 

2.83v

Off

Off

On

Off

Off

Off

Off

On

»

3.38v

Off

On

Off

Off

Off

Off

Off

On

 

3.52v

On

Off

Off

Off

Off

Off

Off

On