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PN5

ABIT COMPUTER CORPORATION

PN5

Processor

CX M1/Pentium

Processor Speed

75/90/100/120/133/150/166/180/200MHz

Chip Set

Unidentified

Maximum Onboard Memory

128MB

Cache

256/512KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (4), 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

Function

Label

Function

Label

Serial port 1

CN1

Speaker

J7 pins 7 - 10

Serial port 2

CN2

Reset switch

J7 pins 11 - 12

Parallel port

CN3

Green PC connector

J7 pins 14 - 15

Floppy drive interface

CN4

Turbo LED

J7 pins 16 & 17

IDE interface 2

CN5

Green PC LED

J8

IDE interface 1

CN6

IR connector

JP2

PS/2 mouse port

J3

USB connector

JP28

IDE interface LED

J6

32-bit PCI slots

PC1 - PC3

Power LED & keylock

J7 pins 1 - 5

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

»

DRAM refresh rate select 66MHz

DS1

Closed

 

DRAM refresh rate select 60MHz

DS1

Open

»

Factory configured - do not alter

JP1

N/A

DRAM

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

None

4MB

(2) 512K x 36

None

4MB

(2) 256K x 36

(2) 256K x 36

6MB

(2) 512K x 36

(2) 256K x 36

6MB

(2) 256K x 36

(2) 512K x 36

8MB

(2) 1M x 36

None

8MB

(2) 512K x 36

(2) 512K x 36

10MB

(2) 1M x 36

(2) 256K x 36

10MB

(2) 256K x 36

(2) 1M x 36

12MB

(2) 1M x 36

(2) 512K x 36

12MB

(2) 512K x 36

(2) 1M x 36

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

18MB

(2) 2M x 36

(2) 256K x 36

18MB

(2) 256K x 36

(2) 2M x 36

20MB

(2) 2M x 36

(2) 512K x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 2M x 36

(2) 1M x 36

24MB

(2) 1M x 36

(2) 2M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

34MB

(2) 4M x 36

(2) 256K x 36

34MB

(2) 256K x 36

(2) 4M x 36

36MB

(2) 4M x 36

(2) 512K x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 4M x 36

(2) 1M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 4M x 36

(2) 2M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

66MB

(2) 8M x 36

(2) 256K x 36

66MB

(2) 256K x 36

(2) 8M x 36

68MB

(2) 8M x 36

(2) 512K x 36

68MB

(2) 512K x 36

(2) 8M x 36

DRAM (CON’T)

Size

Bank 0

Bank 1

72MB

(2) 8M x 36

(2) 1M x 36

72MB

(2) 1M x 36

(2) 8M x 36

80MB

(2) 8M x 36

(2) 2M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 8M x 36

(2) 4M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

CACHE SIZE

Size

Bank 0

SL1

TAG

256KB

(2) 32K x 32

Not installed

(1) 32K x 8

512KB

(2) 32K x 32

Installed

(1) 32K x 8

Note: Bank 0 is factory installed and is not configurable.

CACHE JUMPER

Size

JP5

JP6

JP20

256KB

Open

Open

Open

512KB

Closed

Closed

Closed

CPU SPEED (PENTIUM)

Setting

DS2

DS3

DS4

DS5

DS6

75MHz

Open

Closed

Closed

Open

Open

90MHz

Closed

Closed

Open

Open

Open

100MHz

Closed

Open

Closed

Open

Open

120MHz

Closed

Closed

Open

Closed

Open

133MHz

Closed

Open

Closed

Closed

Open

150MHz

Closed

Closed

Open

Closed

Closed

166MHz

Closed

Open

Closed

Closed

Closed

180MHz

Closed

Closed

Open

Open

Closed

200MHz

Closed

Open

Closed

Open

Closed

CPU SPEED (CYRIX)

Setting

DS2

DS3

DS4

DS5

DS6

120MHz

Open

Closed

Closed

Closed

Open

133MHz

Closed

Open

Open

Closed

Open

150MHz

Closed

Closed

Open

Closed

Open

166MHz

Open

Open

Closed

Closed

Open

CPU VOLTAGE

Setting

JP23

 

3.3v

Pins 2 & 5 closed

»

3.45v

Pins 3 & 6 closed

 

3.6v

Pins 1 & 4 closed

Note: The location of pin 1 is unidentified.