S1563D (REV. 1.0)

TYAN COMPUTER CORPORATION

S1563D (REV. 1.0)

Processor

Pentium

Processor Speed

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

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

512MB (EDO supported)

Maximum Video Memory

None

Cache

512KB

BIOS

AMI/Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connectors (2), USB connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

Power LED & keylock

J22

Serial port 1

CN2

Speaker

J23

Parallel port

CN3

IDE interface LED

J24

Floppy drive interface

CN4

Turbo LED

J25

IDE interface 1

CN5

Turbo switch

J26

IDE interface 2

CN6

Reset switch

J27

PS/2 mouse interface

CN7

32-bit PCI slots

PC1 - PC4

IR connector 1

IR1

USB connector 1

USB1

IR connector 2

IR2

USB connector 2

USB2

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

J16

Open

»

Factory configured - do not alter

J28

Open

»

Factory configured - do not alter

J29

Open

»

Factory configured - do not alter

J30

Open

»

Factory configured - do not alter

J31

Open

»

Factory configured - do not alter

J32

Open

»

Factory configured - do not alter

J33

Open

»

Factory configured - do not alter

J34

Open

»

Factory configured - do not alter

J35

Open

»

Factory configured - do not alter

J36

Open

»

Factory configured - do not alter

J45

Open

»

CMOS memory normal operation

J46

Open

CMOS memory clear

J46

Closed

»

Factory configured - do not alter

J48

Pins 1 & 2 closed

»

Factory configured - do not alter

J55

Open

»

Factory configured - do not alter

J56

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(2) 1M x 32

None

None

None

8MB

(2) 512K x 32

(2) 256K x 32

(2) 256K x 32

None

8MB

(2) 512K x 32

(2) 512K x 32

None

None

8MB

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

10MB

(2) 1M x 32

(2) 256K x 32

None

None

10MB

(2) 512K x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

10MB

(2) 256K x 32

(2) 512K x 32

(2) 512K x 32

None

10MB

(2) 256K x 32

(2) 1M x 32

None

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

12MB

(2) 1M x 32

(2) 256K x 32

(2) 256K x 32

None

12MB

(2) 1M x 32

(2) 512K x 32

None

None

12MB

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

None

12MB

(2) 512K x 32

(2) 1M x 32

None

None

14MB

(2) 1M x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

14MB

(2) 256K x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

16MB

(2) 2M x 32

None

None

None

16MB

(2) 1M x 32

(2) 512K x 32

(2) 512K x 32

None

16MB

(2) 1M x 32

(2) 1M x 32

None

None

16MB

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

18MB

(2) 2M x 32

(2) 256K x 32

None

None

18MB

(2) 256K x 32

(2) 1M x 32

(2) 1M x 32

None

18MB

(2) 256K x 32

(2) 2M x 32

None

None

20MB

(2) 2M x 32

(2) 256K x 32

(2) 256K x 32

None

20MB

(2) 2M x 32

(2) 512K x 32

None

None

20MB

(2) 1M x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

20MB

(2) 512K x 32

(2) 1M x 32

(2) 1M x 32

None

20MB

(2) 512K x 32

(2) 2M x 32

None

None

22MB

(2) 2M x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

24MB

(2) 2M x 32

(2) 512K x 32

(2) 512K x 32

None

24MB

(2) 2M x 32

(2) 1M x 32

None

None

24MB

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

None

24MB

(2) 1M x 32

(2) 2M x 32

None

None

26MB

(2) 256K x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

28MB

(2) 2M x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

28MB

(2) 512K x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

32MB

(2) 4M x 32

None

None

None

32MB

(2) 2M x 32

(2) 1M x 32

(2) 1M x 32

None

32MB

(2) 2M x 32

(2) 2M x 32

None

None

32MB

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

34MB

(2) 4M x 32

(2) 256K x 32

None

None

34MB

(2) 256K x 32

(2) 2M x 32

(2) 2M x 32

None

34MB

(2) 256K x 32

(2) 4M x 32

None

None

36MB

(2) 4M x 32

(2) 256K x 32

(2) 256K x 32

None

36MB

(2) 4M x 32

(2) 512K x 32

None

None

36MB

(2) 512K x 32

(2) 2M x 32

(2) 2M x 32

None

36MB

(2) 512K x 32

(2) 4M x 32

None

None

38MB

(2) 4M x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

40MB

(2) 4M x 32

(2) 512K x 32

(2) 512K x 32

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

40MB

(2) 4M x 32

(2) 1M x 32

None

None

40MB

(2) 2M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

40MB

(2) 1M x 32

(2) 2M x 32

(2) 2M x 32

None

40MB

(2) 1M x 32

(2) 4M x 32

None

None

44MB

(2) 4M x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

48MB

(2) 4M x 32

(2) 1M x 32

(2) 1M x 32

None

48MB

(2) 4M x 32

(2) 2M x 32

None

None

48MB

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

None

48MB

(2) 2M x 32

(2) 4M x 32

None

None

50MB

(2) 256K x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

52MB

(2) 512K x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

56MB

(2) 4M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

56MB

(2) 1M x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

64MB

(2) 8M x 32

None

None

None

64MB

(2) 4M x 32

(2) 2M x 32

(2) 2M x 32

None

64MB

(2) 4M x 32

(2) 4M x 32

None

None

64MB

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

66MB

(2) 8M x 32

(2) 256K x 32

None

None

66MB

(2) 256K x 32

(2) 4M x 32

(2) 4M x 32

None

66MB

(2) 256K x 32

(2) 8M x 32

None

None

68MB

(2) 8M x 32

(2) 256K x 32

(2) 256K x 32

None

68MB

(2) 8M x 32

(2) 512K x 32

None

None

68MB

(2) 512K x 32

(2) 4M x 32

(2) 4M x 32

None

68MB

(2) 512K x 32

(2) 8M x 32

None

None

70MB

(2) 8M x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

72MB

(2) 8M x 32

(2) 512K x 32

(2) 512K x 32

None

72MB

(2) 8M x 32

(2) 1M x 32

None

None

72MB

(2) 1M x 32

(2) 4M x 32

(2) 4M x 32

None

72MB

(2) 1M x 32

(2) 8M x 32

None

None

76MB

(2) 8M x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

80MB

(2) 8M x 32

(2) 1M x 32

(2) 1M x 32

None

80MB

(2) 8M x 32

(2) 2M x 32

None

None

80MB

(2) 4M x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

80MB

(2) 2M x 32

(2) 4M x 32

(2) 4M x 32

None

80MB

(2) 2M x 32

(2) 8M x 32

None

None

88MB

(2) 8M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

96MB

(2) 8M x 32

(2) 2M x 32

(2) 2M x 32

None

96MB

(2) 8M x 32

(2) 4M x 32

None

None

96MB

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

None

96MB

(2) 4M x 32

(2) 8M x 32

None

None

98MB

(2) 256K x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

100MB

(2) 512K x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

104MB

(2) 1M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

112MB

(2) 8M x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

112MB

(2) 2M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

128MB

(2) 16M x 32

None

None

None

128MB

(2) 8M x 32

(2) 4M x 32

(2) 4M x 32

None

128MB

(2) 8M x 32

(2) 8M x 32

None

None

128MB

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

130MB

(2) 16M x 32

(2) 256K x 32

None

None

130MB

(2) 256K x 32

(2) 8M x 32

(2) 8M x 32

None

130MB

(2) 256K x 32

(2) 16M x 32

None

None

132MB

(2) 16M x 32

(2) 256K x 32

(2) 256K x 32

None

132MB

(2) 16M x 32

(2) 512K x 32

None

None

132MB

(2) 512K x 32

(2) 8M x 32

(2) 8M x 32

None

132MB

(2) 512K x 32

(2) 16M x 32

None

None

134MB

(2) 16M x 32

(2) 256K x 32

(2) 256K x 32

(2) 256K x 32

136MB

(2) 16M x 32

(2) 512K x 32

(2) 512K x 32

None

136MB

(2) 16M x 32

(2) 1M x 32

None

None

136MB

(2) 1M x 32

(2) 8M x 32

(2) 8M x 32

None

136MB

(2) 1M x 32

(2) 16M x 32

None

None

140MB

(2) 16M x 32

(2) 512K x 32

(2) 512K x 32

(2) 512K x 32

144MB

(2) 16M x 32

(2) 1M x 32

(2) 1M x 32

None

144MB

(2) 16M x 32

(2) 2M x 32

None

None

144MB

(2) 2M x 32

(2) 8M x 32

(2) 8M x 32

None

144MB

(2) 2M x 32

(2) 16M x 32

None

None

152MB

(2) 16M x 32

(2) 1M x 32

(2) 1M x 32

(2) 1M x 32

160MB

(2) 16M x 32

(2) 2M x 32

(2) 2M x 32

None

160MB

(2) 16M x 32

(2) 4M x 32

None

None

160MB

(2) 8M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

160MB

(2) 4M x 32

(2) 8M x 32

(2) 8M x 32

None

160MB

(2) 4M x 32

(2) 16M x 32

None

None

176MB

(2) 16M x 32

(2) 2M x 32

(2) 2M x 32

(2) 2M x 32

192MB

(2) 16M x 32

(2) 4M x 32

(2) 4M x 32

None

192MB

(2) 16M x 32

(2) 8M x 32

None

None

192MB

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

None

192MB

(2) 8M x 32

(2) 16M x 32

None

None

194MB

(2) 256K x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

196MB

(2) 512K x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

200MB

(2) 1M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

208MB

(2) 2M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

224MB

(2) 16M x 32

(2) 4M x 32

(2) 4M x 32

(2) 4M x 32

224MB

(2) 4M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

256MB

(2) 16M x 32

(2) 8M x 32

(2) 8M x 32

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

256MB

(2) 16M x 32

(2) 16M x 32

None

None

256MB

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

258MB

(2) 256K x 32

(2) 16M x 32

(2) 16M x 32

None

260MB

(2) 512K x 32

(2) 16M x 32

(2) 16M x 32

None

264MB

(2) 1M x 32

(2) 16M x 32

(2) 16M x 32

None

272MB

(2) 2M x 32

(2) 16M x 32

(2) 16M x 32

None

288MB

(2) 4M x 32

(2) 16M x 32

(2) 16M x 32

None

320MB

(2) 16M x 32

(2) 8M x 32

(2) 8M x 32

(2) 8M x 32

320MB

(2) 8M x 32

(2) 16M x 32

(2) 16M x 32

None

384MB

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

None

386MB

(2) 256K x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

388MB

(2) 512K x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

392MB

(2) 1M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

400MB

(2) 2M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

416MB

(2) 4M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

448MB

(2) 8M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

512MB

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

(2) 16M x 32

Note: Board accepts EDO memory. Board also accepts x 36 SIMMs.

DRAM VOLTAGE CONFIGURATION

Voltage

J1

J2

J8

J9

J10

J11

J12

3.3v

Open

Open

Closed

Closed

Closed

Open

Open

»
5v

Closed

Closed

Open

Open

Open

Closed

Closed

CACHE CONFIGURATION

Size

Bank 0

512KB

(4) 32K x 32

Note: Bank 0 is factory installed and is not configurable.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

J13

J19

J20

75MHz

50MHz

1.5x

1 & 2, 3 & 4

Open

Open

90MHz

60MHz

1.5x

3 & 4

Open

Open

100MHz

66MHz

1.5x

1 & 2

Open

Open

120MHz

60MHz

2x

3 & 4

Closed

Open

133MHz

66MHz

2x

1 & 2

Closed

Open

150MHz

60MHz

2.5x

3 & 4

Closed

Closed

166MHz

66MHz

2.5x

1 & 2

Closed

Closed

200MHz

66MHz

3x

1 & 2

Open

Closed

CPU TYPE SELECTION

Type

J50

Single CPU installed

Pins 1 & 2 closed

Dual CPUs installed

Pins 2 & 3 closed

CPU VOLTAGE SELECTION (P54C)

Voltage

J37

J38

J39

J40

J41

3.3v

Closed

Open

Open

Closed

Closed

3.5v

Open

Open

Closed

Closed

Closed

3.6v

Open

Closed

Open

Closed

Closed

CPU VOLTAGE SELECTION (P54C, CON’T)

Voltage

J42

J43

J44

J52

J53

J54

3.3v

Open

Open

Open

Closed

Open

Open

3.5v

Open

Open

Open

Closed

Open

Open

3.6v

Open

Open

Open

Closed

Open

Open

CPU VOLTAGE SELECTION (P55C)

Voltage

J40

J41

J42

J43

J44

J52

J53

J54

2.65v

Open

Open

Open

Closed

Open

Open

Closed

Closed

2.85v

Open

Open

Open

Open

Closed

Open

Closed

Closed

3v

Open

Open

Closed

Open

Open

Open

Closed

Closed

SERIAL PORT SELECTION

Setting

J14

J15

»
Serial port set as COM1 & COM2

Pins 1 & 2 closed

Pins 1 & 2 closed

IR connector

Pins 2 & 3 closed

Pins 2 & 3 closed

Processor	Pentium
Processor Speed	75/90/100/120/133/150/166/200MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	512MB (EDO supported)
Maximum Video Memory	None
Cache	512KB
BIOS	AMI/Award
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connectors (2), USB connectors (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	CN1	Power LED & keylock	J22
Serial port 1	CN2	Speaker	J23
Parallel port	CN3	IDE interface LED	J24
Floppy drive interface	CN4	Turbo LED	J25
IDE interface 1	CN5	Turbo switch	J26
IDE interface 2	CN6	Reset switch	J27
PS/2 mouse interface	CN7	32-bit PCI slots	PC1 - PC4
IR connector 1	IR1	USB connector 1	USB1
IR connector 2	IR2	USB connector 2	USB2

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	J16	Open
»	Factory configured - do not alter	J28	Open
»	Factory configured - do not alter	J29	Open
»	Factory configured - do not alter	J30	Open
»	Factory configured - do not alter	J31	Open
»	Factory configured - do not alter	J32	Open
»	Factory configured - do not alter	J33	Open
»	Factory configured - do not alter	J34	Open
»	Factory configured - do not alter	J35	Open
»	Factory configured - do not alter	J36	Open
»	Factory configured - do not alter	J45	Open
»	CMOS memory normal operation	J46	Open
	CMOS memory clear	J46	Closed
»	Factory configured - do not alter	J48	Pins 1 & 2 closed
»	Factory configured - do not alter	J55	Open
»	Factory configured - do not alter	J56	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(2) 1M x 32	None	None	None
8MB	(2) 512K x 32	(2) 256K x 32	(2) 256K x 32	None
8MB	(2) 512K x 32	(2) 512K x 32	None	None
8MB	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32
10MB	(2) 1M x 32	(2) 256K x 32	None	None
10MB	(2) 512K x 32	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32
10MB	(2) 256K x 32	(2) 512K x 32	(2) 512K x 32	None
10MB	(2) 256K x 32	(2) 1M x 32	None	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
12MB	(2) 1M x 32	(2) 256K x 32	(2) 256K x 32	None
12MB	(2) 1M x 32	(2) 512K x 32	None	None
12MB	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32	None
12MB	(2) 512K x 32	(2) 1M x 32	None	None
14MB	(2) 1M x 32	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32
14MB	(2) 256K x 32	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32
16MB	(2) 2M x 32	None	None	None
16MB	(2) 1M x 32	(2) 512K x 32	(2) 512K x 32	None
16MB	(2) 1M x 32	(2) 1M x 32	None	None
16MB	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32
18MB	(2) 2M x 32	(2) 256K x 32	None	None
18MB	(2) 256K x 32	(2) 1M x 32	(2) 1M x 32	None
18MB	(2) 256K x 32	(2) 2M x 32	None	None
20MB	(2) 2M x 32	(2) 256K x 32	(2) 256K x 32	None
20MB	(2) 2M x 32	(2) 512K x 32	None	None
20MB	(2) 1M x 32	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32
20MB	(2) 512K x 32	(2) 1M x 32	(2) 1M x 32	None
20MB	(2) 512K x 32	(2) 2M x 32	None	None
22MB	(2) 2M x 32	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32
24MB	(2) 2M x 32	(2) 512K x 32	(2) 512K x 32	None
24MB	(2) 2M x 32	(2) 1M x 32	None	None
24MB	(2) 1M x 32	(2) 1M x 32	(2) 1M x 32	None
24MB	(2) 1M x 32	(2) 2M x 32	None	None
26MB	(2) 256K x 32	(2) 1M x 32	(2) 1M x 32	(2) 1M x 32
28MB	(2) 2M x 32	(2) 512K x 32	(2) 512K x 32	(2) 512K x 32
28MB	(2) 512K x 32	(2) 1M x 32	(2) 1M x 32	(2) 1M x 32
32MB	(2) 4M x 32	None	None	None
32MB	(2) 2M x 32	(2) 1M x 32	(2) 1M x 32	None
32MB	(2) 2M x 32	(2) 2M x 32	None	None
32MB	(2) 1M x 32	(2) 1M x 32	(2) 1M x 32	(2) 1M x 32
34MB	(2) 4M x 32	(2) 256K x 32	None	None
34MB	(2) 256K x 32	(2) 2M x 32	(2) 2M x 32	None
34MB	(2) 256K x 32	(2) 4M x 32	None	None
36MB	(2) 4M x 32	(2) 256K x 32	(2) 256K x 32	None
36MB	(2) 4M x 32	(2) 512K x 32	None	None
36MB	(2) 512K x 32	(2) 2M x 32	(2) 2M x 32	None
36MB	(2) 512K x 32	(2) 4M x 32	None	None
38MB	(2) 4M x 32	(2) 256K x 32	(2) 256K x 32	(2) 256K x 32
40MB	(2) 4M x 32	(2) 512K x 32	(2) 512K x 32	None

DRAM VOLTAGE CONFIGURATION
Voltage		J1	J2	J8	J9	J10	J11	J12
	3.3v	Open	Open	Closed	Closed	Closed	Open	Open
»	5v	Closed	Closed	Open	Open	Open	Closed	Closed

CACHE CONFIGURATION
Size	Bank 0
512KB	(4) 32K x 32
Note: Bank 0 is factory installed and is not configurable.

CPU SPEED SELECTION
CPU speed	Clock speed	Multiplier	J13	J19	J20
75MHz	50MHz	1.5x	1 & 2, 3 & 4	Open	Open
90MHz	60MHz	1.5x	3 & 4	Open	Open
100MHz	66MHz	1.5x	1 & 2	Open	Open
120MHz	60MHz	2x	3 & 4	Closed	Open
133MHz	66MHz	2x	1 & 2	Closed	Open
150MHz	60MHz	2.5x	3 & 4	Closed	Closed
166MHz	66MHz	2.5x	1 & 2	Closed	Closed
200MHz	66MHz	3x	1 & 2	Open	Closed

CPU TYPE SELECTION
Type	J50
Single CPU installed	Pins 1 & 2 closed
Dual CPUs installed	Pins 2 & 3 closed

CPU VOLTAGE SELECTION (P54C)
Voltage	J37	J38	J39	J40	J41
3.3v	Closed	Open	Open	Closed	Closed
3.5v	Open	Open	Closed	Closed	Closed
3.6v	Open	Closed	Open	Closed	Closed

CPU VOLTAGE SELECTION (P54C, CON’T)
Voltage	J42	J43	J44	J52	J53	J54
3.3v	Open	Open	Open	Closed	Open	Open
3.5v	Open	Open	Open	Closed	Open	Open
3.6v	Open	Open	Open	Closed	Open	Open

CPU VOLTAGE SELECTION (P55C)
Voltage	J40	J41	J42	J43	J44	J52	J53	J54
2.65v	Open	Open	Open	Closed	Open	Open	Closed	Closed
2.85v	Open	Open	Open	Open	Closed	Open	Closed	Closed
3v	Open	Open	Closed	Open	Open	Open	Closed	Closed

SERIAL PORT SELECTION
Setting		J14	J15
»	Serial port set as COM1 & COM2	Pins 1 & 2 closed	Pins 1 & 2 closed
	IR connector	Pins 2 & 3 closed	Pins 2 & 3 closed