PC 330/350 SERIES (TYPE 65X6) Motherboard Settings and Configuration

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

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PC 330/350 SERIES (TYPE 65X6) Motherboard Settings and Configuration

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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