IBM CORPORATION

PC300 (TYPE 6263, 6265, 6275, 6285)

Device Type

Mainboard

Processor

Pentium II/Celeron/Pentium III

Processor Speed

233/266/300/333/350/400/450MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

384MB (SDRAM supported)

Maximum Video Memory

Unidentified

Audio Chip Set

Unidentified

Cache

256/512KB (located on the CPU)

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options (CPU)

parallel port, PS/2 mouse port, serial ports (2), USB connectors (2), AGP slot

I/O Options (riser card)

32-bit PCI slots (2), wake on LAN connector, wake on modem connector, floppy drive interface, IDE interfaces (2), audio in - CD-ROM

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

USB connector 1

CN5

PS/2 mouse port

CN2

USB connector 2

CN6

Serial port 1

CN3

Parallel port

CN7

Serial port 2

CN4

Video memory module

V1


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

J9

Pins 1 & 2 closed

 

CMOS memory clear

J9

Pins 2 & 3 closed

»

BIOS normal operation

SW1/5

Off

 

BIOS recovery mode

SW1/5

On

»

Factory configured - do not alter

SW1/6

Off

»

PAP disabled

SW1/7

Off

 

PAP enabled

SW1/7

On

»

Floppy drive write protect disabled

SW1/8

Off

 

Floppy drive write protect enabled

SW1/8

On


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(1) 1M x 64

None

None

16MB

(1) 2M x 64

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

24MB

(1) 2M x 64

(1) 1M x 64

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

None

32MB

(1) 2M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

None

40MB

(1) 4M x 64

(1) 1M x 64

None

40MB

(1) 2M x 64

(1) 2M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 1M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

56MB

(1) 4M x 64

(1) 2M x 64

(1) 1M x 64

64MB

(1) 8M x 64

None

None

64MB

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 4M x 64

(1) 4M x 64

None

72MB

(1) 8M x 64

(1) 1M x 64

None

72MB

(1) 4M x 64

(1) 4M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 1M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

None

80MB

(1) 4M x 64

(1) 4M x 64

(1) 2M x 64

88MB

(1) 8M x 64

(1) 2M x 64

(1) 1M x 64

96MB

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

104MB

(1) 8M x 64

(1) 4M x 64

(1) 1M x 64


DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

112MB

(1) 8M x 64

(1) 4M x 64

(1) 2M x 64

128MB

(1) 16M x 64

None

None

128MB

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

136MB

(1) 16M x 64

(1) 1M x 64

None

136MB

(1) 8M x 64

(1) 8M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

None

144MB

(1) 8M x 64

(1) 8M x 64

(1) 2M x 64

152MB

(1) 16M x 64

(1) 2M x 64

(1) 1M x 64

160MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

None

160MB

(1) 8M x 64

(1) 8M x 64

(1) 4M x 64

168MB

(1) 16M x 64

(1) 4M x 64

(1) 1M x 64

176MB

(1) 16M x 64

(1) 4M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

200MB

(1) 16M x 64

(1) 8M x 64

(1) 1M x 64

208MB

(1) 16M x 64

(1) 8M x 64

(1) 2M x 64

224MB

(1) 16M x 64

(1) 8M x 64

(1) 4M x 64

256MB

(1) 16M x 64

(1) 8M x 64

(1) 8M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

Note: Board accepts SDRAM memory.


CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU. 128KB cache is located on the Celeron 300A & 333 CPU. 512KB cache is located on the Pentium III CPU.


VIDEO MEMORY CONFIGURATION

Note: The size of the video memory is unidentified.


CPU SPEED SELECTION (CELERON)

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

433MHz

66MHz

6.5x

Off

On

On

Off


CPU SPEED SELECTION (PENTIUM II)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

233MHz

66MHz

3.5x

Off

Off

On

On

266MHz

66MHz

4x

On

On

Off

On

300MHz

66MHz

4.5x

Off

On

Off

On

333MHz

66MHz

5x

On

Off

Off

On

350MHz

100MHz

3.5x

Off

Off

On

On

400MHz

100MHz

4x

On

On

Off

On

450MHz

100MHz

4.5x

Off

On

Off

On


CPU SPEED SELECTION (PENTIUM III)

Note: No switch settings are required for the Pentium III CPU.

CONNECTIONS

Purpose

Location

Purpose

Location

Front panel connector

C1

Audio in - CD-ROM

C8

Alert on LAN connector

C2

IDE interface 1

CN1

Chassis fan power

C3

IDE interface 2

CN2

Asset ID connector

C4

Floppy drive interface

CN3

Wake on LAN connector

C5

Power connector

P1

Wake on modem connector

C6

32-bit PCI slots

PC1 - PC3

SCSI interface LED

C7

Riser slot

SL1

Note: CN1 & P1 are located on the bottom side of the card.