5V A0/A2/A5 Motherboard Settings and Configuration

SOYO COMPUTER CO., LTD.

5V A0/A2/A5

Processor
CX M1/AM K5/Pentium
Processor Speed
75/90/100/120/133/150/166/180/200MHz
Chip Set
Intel
Video Chip Set
None
Maximum Onboard Memory
128MB (EDO supported)
Maximum Video Memory
None
Cache
256/512KB
BIOS
Award
Dimensions
330mm x 218mm
I/O Options
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 2
CN1
Power LED & keylock
J17
Serial port 1
CN2
Speaker
J18
Floppy drive interface
CN3
Reset switch
J19
Parallel port
CN4
Green PC connector
J23
IDE interface 2
CN5
IDE interface LED
J24
IDE interface 1
CN6
32-bit PCI slots
PC1 - PC4
PS/2 mouse port
CN7
Cache slot
SL1

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured - do not alter
JP1
Unidentified
»
CMOS memory normal operation
JP5
Open

CMOS memory clear
JP5
Closed
»
Factory configured - do not alter
JP22
Unidentified
»
Factory configured - do not alter
JP35
Unidentified
»
PS/2 mouse disabled
JPS2
Open

PS/2 mouse enabled
JPS2
Closed

DRAM/DIMM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
4MB
(2) 512K x 36
None
None
8MB
(2) 1M x 36
None
None
8MB
(2) 512K x 36
(2) 512K x 36
None
12MB
(2) 1M x 36
(2) 512K x 36
None
12MB
None
(2) 512K x 36
(1) 1M x 64
16MB
(2) 2M x 36
None
None
16MB
(2) 1M x 36
(2) 1M x 36
None
16MB
None
(2) 1M x 36
(1) 1M x 64
20MB
(2) 2M x 36
(2) 512K x 36
None
20MB
None
(2) 512K x 36
(1) 2M x 64
24MB
None
(2) 1M x 36
(1) 2M x 64
24MB
None
(2) 2M x 36
(1) 1M x 64
24MB
(2) 1M x 36
(2) 2M x 36
None
32MB
None
(2) 2M x 36
(1) 2M x 64
32MB
(2) 4M x 36
None
None
32MB
(2) 2M x 36
(2) 2M x 36
None
36MB
None
(2) 512K x 36
(1) 4M x 64
36MB
(2) 4M x 36
(2) 512K x 36
None
40MB
None
(2) 1M x 36
(1) 4M x 64
40MB
None
(2) 4M x 36
(1) 1M x 64
40MB
(2) 1M x 36
(2) 4M x 36
None
48MB
None
(2) 4M x 36
(1) 2M x 64

DRAM/DIMM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
48MB
None
(2) 2M x 36
(1) 4M x 64
48MB
(2) 4M x 36
(2) 2M x 36
None
64MB
None
(2) 4M x 36
(1) 4M x 64
64MB
(2) 8M x 36
None
None
64MB
(2) 4M x 36
(2) 4M x 36
None
68MB
None
(2) 512K x 36
(1) 8M x 64
68MB
(2) 8M x 36
(2) 512K x 36
None
72MB
None
(2) 1M x 36
(1) 8M x 64
72MB
None
(2) 8M x 36
(1) 1M x 64
72MB
(2) 1M x 36
(2) 8M x 36
None
80MB
None
(2) 8M x 36
(1) 2M x 64
80MB
None
(2) 2M x 36
(1) 8M x 64
80MB
(2) 8M x 36
(2) 2M x 36
None
96MB
None
(2) 8M x 36
(1) 4M x 64
96MB
None
(2) 4M x 36
(1) 8M x 64
96MB
(2) 4M x 36
(2) 8M x 36
None
128MB
None
(2) 8M x 36
(1) 8M x 64
128MB
(2) 8M x 36
(2) 8M x 36
None
Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. Banks are interchangeable.

DIMM VOLTAGE CONFIGURATION
Voltage
JP37
JP38
»
3.3v
Pins 2 & 3 closed
Pins 2 & 3 closed

5v
Pins 1 & 2 closed
Pins 1 & 2 closed

CACHE CONFIGURATION
Size
Bank 0
SL1
TAG
256KB
None
256KB module installed
(1) 16K x 8
256KB
(2) 32K x 32
None installed
(1) 16K x 8
512KB
(2) 32K x 32
256KB module installed
(1) 16K x 8

CACHE JUMPER CONFIGURATION
Size
JP20
256KB
Open
512KB
Closed
Note: JP20 may be labeled as JP7 on some versions.

CPU SPEED SELECTION (CYRIX)
CPU speed
Clock speed
Multiplier
JP10
JP11
JP13
JP14
120MHz
50MHz
2x
Closed
Closed
Closed
Open
133MHz
55MHz
2x
Open
Open
Closed
Open
150MHz
60MHz
2x
Open
Closed
Closed
Open
166MHz
66MHz
2x
Closed
Open
Closed
Open

CPU SPEED SELECTION (AMD)
CPU speed
Clock speed
Multiplier
JP10
JP11
JP13
JP14
75MHz
50MHz
1.5x
Closed
Closed
Open
Open
90MHz
55MHz
1.5x
Open
Open
Open
Open
100MHz
55MHz
1.5x
Open
Open
Open
Open
90MHz
60MHz
1.5x
Open
Closed
Open
Open
100MHz
66MHz
1.5x
Closed
Open
Open
Open
120MHz
60MHz
1.5x
Open
Closed
Open
Open
133MHz
66MHz
1.5x
Closed
Open
Open
Open
150MHz
60MHz
2x
Open
Closed
Closed
Open
166MHz
66MHz
2x
Closed
Open
Closed
Open

CPU SPEED SELECTION (INTEL)
CPU speed
Clock speed
Multiplier
JP10
JP11
JP13
JP14
75MHz
50MHz
1.5x
Closed
Closed
Open
Open
90MHz
60MHz
1.5x
Open
Closed
Open
Open
100MHz
50MHz
2x
Closed
Closed
Closed
Open
100MHz
66MHz
1.5x
Closed
Open
Open
Open
120MHz
60MHz
2x
Open
Closed
Closed
Open
133MHz
66MHz
2x
Closed
Open
Closed
Open
150MHz
60MHz
2.5x
Open
Closed
Closed
Closed
166MHz
66MHz
2.5x
Closed
Open
Closed
Closed
180MHz
60MHz
3x
Open
Closed
Open
Closed
200MHz
66MHz
3x
Closed
Open
Open
Closed

CPU VOLTAGE SELECTION
Voltage
JP30
JP31
»
3.3v (Standard or VR)
Closed
Open

3.45v - 3.6v (VRE)
Open
Closed

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Processor	CX M1/AM K5/Pentium
Processor Speed	75/90/100/120/133/150/166/180/200MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	128MB (EDO supported)
Maximum Video Memory	None
Cache	256/512KB
BIOS	Award
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	CN1	Power LED & keylock	J17
Serial port 1	CN2	Speaker	J18
Floppy drive interface	CN3	Reset switch	J19
Parallel port	CN4	Green PC connector	J23
IDE interface 2	CN5	IDE interface LED	J24
IDE interface 1	CN6	32-bit PCI slots	PC1 - PC4
PS/2 mouse port	CN7	Cache slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter	JP1	Unidentified
»	CMOS memory normal operation	JP5	Open
	CMOS memory clear	JP5	Closed
»	Factory configured - do not alter	JP22	Unidentified
»	Factory configured - do not alter	JP35	Unidentified
»	PS/2 mouse disabled	JPS2	Open
	PS/2 mouse enabled	JPS2	Closed

DRAM/DIMM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
4MB	(2) 512K x 36	None	None
8MB	(2) 1M x 36	None	None
8MB	(2) 512K x 36	(2) 512K x 36	None
12MB	(2) 1M x 36	(2) 512K x 36	None
12MB	None	(2) 512K x 36	(1) 1M x 64
16MB	(2) 2M x 36	None	None
16MB	(2) 1M x 36	(2) 1M x 36	None
16MB	None	(2) 1M x 36	(1) 1M x 64
20MB	(2) 2M x 36	(2) 512K x 36	None
20MB	None	(2) 512K x 36	(1) 2M x 64
24MB	None	(2) 1M x 36	(1) 2M x 64
24MB	None	(2) 2M x 36	(1) 1M x 64
24MB	(2) 1M x 36	(2) 2M x 36	None
32MB	None	(2) 2M x 36	(1) 2M x 64
32MB	(2) 4M x 36	None	None
32MB	(2) 2M x 36	(2) 2M x 36	None
36MB	None	(2) 512K x 36	(1) 4M x 64
36MB	(2) 4M x 36	(2) 512K x 36	None
40MB	None	(2) 1M x 36	(1) 4M x 64
40MB	None	(2) 4M x 36	(1) 1M x 64
40MB	(2) 1M x 36	(2) 4M x 36	None
48MB	None	(2) 4M x 36	(1) 2M x 64

DRAM/DIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2
48MB	None	(2) 2M x 36	(1) 4M x 64
48MB	(2) 4M x 36	(2) 2M x 36	None
64MB	None	(2) 4M x 36	(1) 4M x 64
64MB	(2) 8M x 36	None	None
64MB	(2) 4M x 36	(2) 4M x 36	None
68MB	None	(2) 512K x 36	(1) 8M x 64
68MB	(2) 8M x 36	(2) 512K x 36	None
72MB	None	(2) 1M x 36	(1) 8M x 64
72MB	None	(2) 8M x 36	(1) 1M x 64
72MB	(2) 1M x 36	(2) 8M x 36	None
80MB	None	(2) 8M x 36	(1) 2M x 64
80MB	None	(2) 2M x 36	(1) 8M x 64
80MB	(2) 8M x 36	(2) 2M x 36	None
96MB	None	(2) 8M x 36	(1) 4M x 64
96MB	None	(2) 4M x 36	(1) 8M x 64
96MB	(2) 4M x 36	(2) 8M x 36	None
128MB	None	(2) 8M x 36	(1) 8M x 64
128MB	(2) 8M x 36	(2) 8M x 36	None
Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. Banks are interchangeable.

DIMM VOLTAGE CONFIGURATION
Voltage		JP37	JP38
»	3.3v	Pins 2 & 3 closed	Pins 2 & 3 closed
	5v	Pins 1 & 2 closed	Pins 1 & 2 closed

CACHE CONFIGURATION
Size	Bank 0	SL1	TAG
256KB	None	256KB module installed	(1) 16K x 8
256KB	(2) 32K x 32	None installed	(1) 16K x 8
512KB	(2) 32K x 32	256KB module installed	(1) 16K x 8

CACHE JUMPER CONFIGURATION
Size	JP20
256KB	Open
512KB	Closed
Note: JP20 may be labeled as JP7 on some versions.

CPU SPEED SELECTION (CYRIX)
CPU speed	Clock speed	Multiplier	JP10	JP11	JP13	JP14
120MHz	50MHz	2x	Closed	Closed	Closed	Open
133MHz	55MHz	2x	Open	Open	Closed	Open
150MHz	60MHz	2x	Open	Closed	Closed	Open
166MHz	66MHz	2x	Closed	Open	Closed	Open

CPU SPEED SELECTION (AMD)
CPU speed	Clock speed	Multiplier	JP10	JP11	JP13	JP14
75MHz	50MHz	1.5x	Closed	Closed	Open	Open
90MHz	55MHz	1.5x	Open	Open	Open	Open
100MHz	55MHz	1.5x	Open	Open	Open	Open
90MHz	60MHz	1.5x	Open	Closed	Open	Open
100MHz	66MHz	1.5x	Closed	Open	Open	Open
120MHz	60MHz	1.5x	Open	Closed	Open	Open
133MHz	66MHz	1.5x	Closed	Open	Open	Open
150MHz	60MHz	2x	Open	Closed	Closed	Open
166MHz	66MHz	2x	Closed	Open	Closed	Open

CPU SPEED SELECTION (INTEL)
CPU speed	Clock speed	Multiplier	JP10	JP11	JP13	JP14
75MHz	50MHz	1.5x	Closed	Closed	Open	Open
90MHz	60MHz	1.5x	Open	Closed	Open	Open
100MHz	50MHz	2x	Closed	Closed	Closed	Open
100MHz	66MHz	1.5x	Closed	Open	Open	Open
120MHz	60MHz	2x	Open	Closed	Closed	Open
133MHz	66MHz	2x	Closed	Open	Closed	Open
150MHz	60MHz	2.5x	Open	Closed	Closed	Closed
166MHz	66MHz	2.5x	Closed	Open	Closed	Closed
180MHz	60MHz	3x	Open	Closed	Open	Closed
200MHz	66MHz	3x	Closed	Open	Open	Closed

CPU VOLTAGE SELECTION
Voltage		JP30	JP31
»	3.3v (Standard or VR)	Closed	Open
	3.45v - 3.6v (VRE)	Open	Closed