IBM CORPORATION

PC 300 (TYPE 6267, 6277, 6287) CELERON

Device Type

Mainboard

Processor

Celeron

Processor Speed

300//366/400/433MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

256MB (SDRAM supported)

Maximum Video Memory

Unidentified

Audio Chip Set

Unidentified

Cache

128KB (located on Celeron CPU)

BIOS

Unidentified

Dimensions

305mm x 244mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial port, VGA port, USB connectors (2), ATX power connector, wake on LAN connector, wake on modem connector

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power connector

ATX

Parallel port

CN4

Wake on modem connector

C1

Serial port

CN5

Wake on LAN connector

C2

VGA port

CN6

LED

C3

IDE interface 1

CN7

Soft off power supply

C4

IDE interface 2

CN8

USB connector 1

CN1

Floppy drive interface

CN9

USB connector 2

CN2

32-bit PCI slots

PC1 - PC3

PS/2 mouse port

CN3


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

J1

Pins 1 & 2 closed

 

CMOS memory clear

J1

Pins 2 & 3 closed

»

Flash BIOS normal operation

SW1/5

Off

 

Flash BIOS recovery mode

SW1/5

On

»

Floppy drive write protect disabled

SW1/6

Off

 

Floppy drive write protect enabled

SW1/6

On


DIMM CONFIGURATION

Size

Bank 0

Bank 1

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

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) 16M x 64

None

128MB

(1) 8M x 64

(1) 8M x 64

136MB

(1) 16M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

Note: Board accepts SDRAM memory.


CACHE CONFIGURATION

Note: 128KB cache is located on the Celeron CPU.


VIDEO MEMORY CONFIGURATION

Note: The size of the video memory is unidentified.


CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

300MHz

66MHz

4.5x

Off

On

Off

On

333MHz

66MHz

5x

On

Off

Off

On

366MHz

66MHz

5.5x

Off

Off

Off

On

400MHz

66MHz

6x

On

On

On

Off

433MHz

66MHz

6.5x

Off

On

On

Off