486VESA (VER. 2.2) Motherboard Settings and Configuration

SOYO COMPUTER CO., LTD.

486VESA (VER. 2.2)

Processor
CX486M6/CX486M7/80486SX/80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
Unidentified
Max. Onboard DRAM
128MB
Cache
64/128/256KB
BIOS
Award
Dimensions
254mm x 220mm
I/O Options
32-bit VESA local bus slots (3), green PC connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Power LED & keylock
J17
Turbo LED
J22
Speaker
J18
Green PC connector
JP4
Reset switch
J19
Green PC connector
JP6
External battery
J20
Green PC connector
JP7
Turbo switch
J21
32-bit VESA local bus slots
SL1 - SL3

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Monitor type select monochrome
JP3
Open

Monitor type select color
JP3
Closed
»
CMOS memory normal operation
JP5
pins 1 & 2 closed

CMOS memory clear
JP5
pins 2 & 3 closed
»
Factory configured - do not alter
JP17
pins 1 & 2 closed
»
Factory configured - do not alter
JP27
pins 1 & 2 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
1MB
(1) 256K x 36
NONE
NONE
NONE
2MB
(1) 256K x 36
(1) 256K x 36
NONE
NONE
2MB
(1) 512K x 36
NONE
NONE
NONE
4MB
(1) 256K x 36
(1) 256K x 36
(1) 512K x 36
NONE
4MB
(1) 512K x 36
(1) 512K x 36
NONE
NONE
4MB
(1) 1M x 36
NONE
NONE
NONE
5MB
(1) 256K x 36
(1) 1M x 36
NONE
NONE
6MB
(1) 256K x 36
(1) 256K x 36
(1) 1M x 36
NONE
6MB
(1) 512K x 36
(1) 1M x 36
NONE
NONE
8MB
(1) 256K x 36
(1) 256K x 36
(1) 512K x 36
(1) 1M x 36
8MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
NONE
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
8MB
(1) 2M x 36
NONE
NONE
NONE
10MB
(1) 256K x 36
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
12MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
12MB
(1) 1M x 36
(1) 2M x 36
NONE
NONE
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 2M x 36
(1) 2M x 36
NONE
NONE
16MB
(1) 1M x 36
(1) 1M x 36
(1) 2M x 36
NONE
16MB
(1) 4M x 36
NONE
NONE
NONE
17MB
(1) 256K x 36
(1) 4M x 36
NONE
NONE
18MB
(1) 256K x 36
(1) 256K x 36
(1) 4M x 36
NONE
18MB
(1) 512K x 36
(1) 4M x 36
NONE
NONE
20MB
(1) 512K x 36
(1) 512K x 36
(1) 4M x 36
NONE
20MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
NONE
20MB
(1) 1M x 36
(1) 4M x 36
NONE
NONE
24MB
(1) 512K x 36
(1) 512K x 36
(1) 1M x 36
(1) 4M x 36
24MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
NONE
24MB
(1) 1M x 36
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
24MB
(1) 2M x 36
(1) 4M x 36
NONE
NONE
24MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
NONE
28MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 2M x 36
(1) 2M x 36
(1) 4M x 36
NONE

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
32MB
(1) 8M x 36
NONE
NONE
NONE
36MB
(1) 512K x 36
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
36MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
NONE
36MB
(1) 1M x 36
(1) 8M x 36
NONE
NONE
40MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
40MB
(1) 1M x 36
(1) 1M x 36
(1) 8M x 36
NONE
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
48MB
(1) 2M x 36
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
48MB
(1) 2M x 36
(1) 2M x 36
(1) 8M x 36
NONE
48MB
(1) 4M x 36
(1) 8M x 36
NONE
NONE
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
64MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
NONE
64MB
(1) 16M x 36
NONE
NONE
NONE
64MB
(1) 8M x 36
(1) 8M x 36
NONE
NONE
65MB
(1) 256K x 36
(1) 16M x 36
NONE
NONE
68MB
(1) 1M x 36
(1) 16M x 36
NONE
NONE
68MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
NONE
72MB
(1) 1M x 36
(1) 1M x 36
(1) 16M x 36
NONE
72MB
(1) 1M x 36
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
80MB
(1) 4M x 36
(1) 16M x 36
NONE
NONE
80MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
NONE
80MB
(1) 2M x 36
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
96MB
(1) 4M x 36
(1) 4M x 36
(1) 16M x 36
NONE
96MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
NONE
128MB
(1) 16M x 36
(1) 16M x 36
NONE
NONE
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
64KB
(4) 8K x 8
(4) 8K x 8
(1) 8K x 8
128KB
(4) 32K x 8
NONE
(1) 8K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 16K x 8 or (1) 32K x 8
256KB
(4) 64K x 8
NONE
(1) 16K x 8 or (1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP9
JP10
JP13
64KB
pins 2 & 3 closed
Open
pins 1 & 2 closed
128KB
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
256KB
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
256KB
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type
JP1
JP2
JP11
JP12
JP14
JP15
JP16
CX486M6
1 & 2
2 & 3
2 & 3
1 & 2
2 & 3
Open
Open
CX486M7
1 & 2
2 & 3
2 & 3
1 & 2
1 & 2, 3 & 4
3 & 4
Open
80486SX
2 & 3
1 & 2
3 & 4
2 & 3
2 & 3
Open
Open
80486DX
2 & 3
1 & 2
3 & 4
2 & 3
1 & 2, 3 & 4
3 & 4
Open
80486DX2
2 & 3
1 & 2
3 & 4
2 & 3
1 & 2, 3 & 4
3 & 4
Open
80486DX4
2 & 3
1 & 2
3 & 4
2 & 3
1 & 2, 3 & 4
3 & 4
Open
P24D
2 & 3
1 & 2
1 & 2, 3 & 4
2 & 3
1 & 2, 3 & 4
3 & 4
Closed
P24T
2 & 3
1 & 2
3 & 4
2 & 3
1 & 2, 3 & 4
2 & 3
Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP18
JP19
JP20
JP21
JP22
JP23
JP32
CX486M6
2 & 3
2 & 3
Open
Open
2 & 3
2 & 3
2 & 3
CX486M7
2 & 3
2 & 3
Open
Open
2 & 3
2 & 3
2 & 3
80486SX
2 & 3
4 & 5
Open
1 & 2
Open
Open
2 & 3
80486DX
2 & 3
4 & 5
Open
1 & 2
Open
Open
2 & 3
80486DX2
2 & 3
4 & 5
Open
1 & 2
Open
Open
2 & 3
80486DX4
2 & 3
4 & 5
Open
1 & 2
Open
Open
2 & 3
P24D
1 & 2
4 & 5
Closed
2 & 3
1 & 2
Open
2 & 3
P24T
1 & 2
1 & 2
Open
Open
1 & 2
1 & 2
2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
JP29
JP30
JP31
JP34
25MHz
Closed
Open
Closed
Closed
33MHz
Open
Closed
Closed
Closed
40MHz
Closed
Open
Open
Closed
50iMHz
Closed
Open
Closed
Closed
50MHz
Open
Closed
Open
Closed
66iMHz
Open
Closed
Closed
Closed
75iMHz
Closed
Open
Closed
Open
100iMHz
Open
Closed
Closed
Open

CPU VOLTAGE CONFIGURATION
Voltage
JP24
3.3v
pins 2 & 3, 5 & 6 closed
5.0v
pins 1 & 2, 4 & 5 closed

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486VESA (VER. 2.2) Motherboard Settings and Configuration

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Processor	CX486M6/CX486M7/80486SX/80486DX/80486DX2/80486DX4/P24D/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	Unidentified
Max. Onboard DRAM	128MB
Cache	64/128/256KB
BIOS	Award
Dimensions	254mm x 220mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J17	Turbo LED	J22
Speaker	J18	Green PC connector	JP4
Reset switch	J19	Green PC connector	JP6
External battery	J20	Green PC connector	JP7
Turbo switch	J21	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select monochrome	JP3	Open
	Monitor type select color	JP3	Closed
»	CMOS memory normal operation	JP5	pins 1 & 2 closed
	CMOS memory clear	JP5	pins 2 & 3 closed
»	Factory configured - do not alter	JP17	pins 1 & 2 closed
»	Factory configured - do not alter	JP27	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(1) 256K x 36	NONE	NONE	NONE
2MB	(1) 256K x 36	(1) 256K x 36	NONE	NONE
2MB	(1) 512K x 36	NONE	NONE	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 512K x 36	NONE
4MB	(1) 512K x 36	(1) 512K x 36	NONE	NONE
4MB	(1) 1M x 36	NONE	NONE	NONE
5MB	(1) 256K x 36	(1) 1M x 36	NONE	NONE
6MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	NONE
6MB	(1) 512K x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 256K x 36	(1) 256K x 36	(1) 512K x 36	(1) 1M x 36
8MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
10MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
12MB	(1) 1M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 2M x 36	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
17MB	(1) 256K x 36	(1) 4M x 36	NONE	NONE
18MB	(1) 256K x 36	(1) 256K x 36	(1) 4M x 36	NONE
18MB	(1) 512K x 36	(1) 4M x 36	NONE	NONE
20MB	(1) 512K x 36	(1) 512K x 36	(1) 4M x 36	NONE
20MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
24MB	(1) 512K x 36	(1) 512K x 36	(1) 1M x 36	(1) 4M x 36
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	NONE
24MB	(1) 1M x 36	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36
24MB	(1) 2M x 36	(1) 4M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
28MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
32MB	(1) 2M x 36	(1) 2M x 36	(1) 4M x 36	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
36MB	(1) 512K x 36	(1) 512K x 36	(1) 4M x 36	(1) 4M x 36
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	NONE
36MB	(1) 1M x 36	(1) 8M x 36	NONE	NONE
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
40MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	NONE
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
48MB	(1) 2M x 36	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36
48MB	(1) 2M x 36	(1) 2M x 36	(1) 8M x 36	NONE
48MB	(1) 4M x 36	(1) 8M x 36	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	NONE
64MB	(1) 16M x 36	NONE	NONE	NONE
64MB	(1) 8M x 36	(1) 8M x 36	NONE	NONE
65MB	(1) 256K x 36	(1) 16M x 36	NONE	NONE
68MB	(1) 1M x 36	(1) 16M x 36	NONE	NONE
68MB	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36	NONE
72MB	(1) 1M x 36	(1) 1M x 36	(1) 16M x 36	NONE
72MB	(1) 1M x 36	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36
80MB	(1) 4M x 36	(1) 16M x 36	NONE	NONE
80MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	NONE
80MB	(1) 2M x 36	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36
96MB	(1) 4M x 36	(1) 4M x 36	(1) 16M x 36	NONE
96MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	NONE
128MB	(1) 16M x 36	(1) 16M x 36	NONE	NONE
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 16K x 8 or (1) 32K x 8
256KB	(4) 64K x 8	NONE	(1) 16K x 8 or (1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP9	JP10	JP13
64KB	pins 2 & 3 closed	Open	pins 1 & 2 closed
128KB	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
256KB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
256KB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed

CPU TYPE CONFIGURATION
Type	JP1	JP2	JP11	JP12	JP14	JP15	JP16
CX486M6	1 & 2	2 & 3	2 & 3	1 & 2	2 & 3	Open	Open
CX486M7	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2, 3 & 4	3 & 4	Open
80486SX	2 & 3	1 & 2	3 & 4	2 & 3	2 & 3	Open	Open
80486DX	2 & 3	1 & 2	3 & 4	2 & 3	1 & 2, 3 & 4	3 & 4	Open
80486DX2	2 & 3	1 & 2	3 & 4	2 & 3	1 & 2, 3 & 4	3 & 4	Open
80486DX4	2 & 3	1 & 2	3 & 4	2 & 3	1 & 2, 3 & 4	3 & 4	Open
P24D	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	1 & 2, 3 & 4	3 & 4	Closed
P24T	2 & 3	1 & 2	3 & 4	2 & 3	1 & 2, 3 & 4	2 & 3	Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP18	JP19	JP20	JP21	JP22	JP23	JP32
CX486M6	2 & 3	2 & 3	Open	Open	2 & 3	2 & 3	2 & 3
CX486M7	2 & 3	2 & 3	Open	Open	2 & 3	2 & 3	2 & 3
80486SX	2 & 3	4 & 5	Open	1 & 2	Open	Open	2 & 3
80486DX	2 & 3	4 & 5	Open	1 & 2	Open	Open	2 & 3
80486DX2	2 & 3	4 & 5	Open	1 & 2	Open	Open	2 & 3
80486DX4	2 & 3	4 & 5	Open	1 & 2	Open	Open	2 & 3
P24D	1 & 2	4 & 5	Closed	2 & 3	1 & 2	Open	2 & 3
P24T	1 & 2	1 & 2	Open	Open	1 & 2	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JP29	JP30	JP31	JP34
25MHz	Closed	Open	Closed	Closed
33MHz	Open	Closed	Closed	Closed
40MHz	Closed	Open	Open	Closed
50iMHz	Closed	Open	Closed	Closed
50MHz	Open	Closed	Open	Closed
66iMHz	Open	Closed	Closed	Closed
75iMHz	Closed	Open	Closed	Open
100iMHz	Open	Closed	Closed	Open

CPU VOLTAGE CONFIGURATION
Voltage	JP24
3.3v	pins 2 & 3, 5 & 6 closed
5.0v	pins 1 & 2, 4 & 5 closed