IBM CORPORATION

PC 330/350 SERIES (TYPE 65X6)

Processor

Pentium

Processor Speed

75/90/100MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

128MB

Maximum Video Memory

2MB

Cache

256/512KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VESA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

IDE interface

CN8

Parallel port

CN2

Floppy drive interface

CN9

Serial port

CN3

Voltage regulator

J1

Serial port

CN4

Front panel connector

J1D1

PS/2 mouse port

CN5

Front panel connector

J2A2

VESA feature connector

CN6

Riser slot

SL1

IDE interface

CN7

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Flash BIOS normal operation

J5J1

Pins 1 & 3 closed

 

Flash BIOS clear

J5J1

Pins 1 & 2 closed

»

Password normal operation

SW1/3

Off

 

Password clear

SW1/3

On

»

CMOS memory normal operation

SW1/4

Off

 

CMOS memory clear

SW1/4

On

»

Factory configured - do not alter

SW1/5

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

80MB

(2) 8M x 36

(2) 2M x 36

128MB

(2) 8M x 36

(2) 8M x 36

Note: Board also accepts x 32 SIMMs. The location of banks 0 & 1 are unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

Note: The location of banks 0 & 1 are unidentified.

CACHE SWITCH CONFIGURATION

Size

SW1/1

SW1/2

None

On

N/A

256KB

Off

Off

512KB

Off

On

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

1MB

None

2MB

1MB

1MB

Note: Bank 0 is factory installed and is not configurable. The size of the video memory chips are unidentified.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

SW1/6

SW1/7

SW1/8

75MHz

50MHz

1.5x

Off

Off

Off

90MHz

60MHz

1.5x

Off

On

Off

100MHz

66MHz

1.5x

Off

Off

On

CPU TYPE SELECTION

Type

J9C1

»

VR

Pins 1 & 3 closed

 

VRE

Pins 5 & 7 closed

ISA BUS CLOCK SPEED SELECTION

CPU speed

ISA clock speed

J5J1

»

75MHz (1/6 clock speed)

8.33MHz

Pins 5 & 7 open

 

75MHz (1/8 clock speed)

6.25MHz

Pins 5 & 7 closed

 

90MHz (1/6 clock speed)

10MHz

Pins 5 & 7 open

»

90MHz (1/8 clock speed)

7.5MHz

Pins 5 & 7 closed

 

100MHz (1/6 clock speed)

11MHz

Pins 5 & 7 open

 

100MHz (1/8 clock speed)

8.25MHz

Pins 5 & 7 closed