S1563S (REV. 1.0) Motherboard Settings and Configuration

TYAN COMPUTER CORPORATION

S1563S (REV. 1.0)

Processor
CX M1/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 (CYRIX)
CPU speed
Clock speed
Multiplier
J13
J19
J20
120MHz
50MHz
2x
1 & 2, 3 & 4
Closed
Open
150MHz
60MHz
2x
3 & 4
Closed
Open
166MHz
66MHz
2x
1 & 2
Closed
Open

CPU SPEED SELECTION (INTEL)
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 VOLTAGE SELECTION (CYRIX & 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 (CYRIX & 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

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S1563S (REV. 1.0) Motherboard Settings and Configuration

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Processor	CX M1/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 (CYRIX)
CPU speed	Clock speed	Multiplier	J13	J19	J20
120MHz	50MHz	2x	1 & 2, 3 & 4	Closed	Open
150MHz	60MHz	2x	3 & 4	Closed	Open
166MHz	66MHz	2x	1 & 2	Closed	Open

CPU SPEED SELECTION (INTEL)
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 VOLTAGE SELECTION (CYRIX & 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 (CYRIX & 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