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PC300 (TYPE 6272, 6282)

IBM CORPORATION

PC300 (TYPE 6272, 6282)

Device Type

Mainboard

Processor

Pentium

Processor Speed

75/90/100/120/133/150/166/200/233MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

128MB (EDO & SDRAM supported)

Maximum Video Memory

Unidentified

Cache

256/512KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Ethernet 10BaseT connector, AUI connector, floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot, cache slot, USB connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

5v power

C1

Serial port 2

CN8

5v auxiliary power

C2

AUI connector

CN9

LAN LED

C4

Floppy drive interface

CN10

Chassis fan power

C5

IDE interface 1

CN11

3.3v power

C6

IDE interface 2

CN12

VGA port

CN1

VGA feature connector

CN13

Parallel port

CN2

Power switch connector

J7

USB connector 2

CN3

Power LED/IDE interface LED

J8

USB connector 1

CN4

Wake on modem connector

J27

PS/2 mouse port

CN5

Wake on LAN connector

J28

Serial port 1

CN6

Riser slot

SL1

Ethernet 10BaseT connector

CN7

Cache slot

SL2

USER CONFIGURABLE SETTINGS

Function

Label

Position

CMOS memory normal operation

J6

Pins 1 & 2 closed

 

CMOS memory clear

J6

Pins 2 & 3 closed

Factory configured - do not alter

SW1/5

Off

Floppy drive normal operation

SW1/6

Off

Floppy drive read only

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) 8M x 64

(1) 8M x 64

Note: Board accepts EDO & SDRAM memory.

CACHE CONFIGURATION

Size

SL2

256KB

256KB module installed

512KB

512KB module installed

VIDEO MEMORY CONFIGURATION

Note: The size location of the video memory is unidentified.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

75MHz

50MHz

1.5x

Off

Off

On

On

90MHz

60MHz

1.5x

Off

Off

On

Off

100MHz

66MHz

1.5x

Off

Off

Off

On

120MHz

60MHz

2x

On

Off

On

Off

133MHz

66MHz

2x

On

Off

Off

On

150MHz

60MHz

2.5x

On

On

On

Off

166MHz

66MHz

2.5x

On

On

Off

On

200MHz

66MHz

3x

Off

On

Off

On

233MHz

66MHz

3.5x

Off

Off

Off

On