GA-486VS Motherboard Settings and Configuration

GIGA-BYTE TECHNOLOGY CO., LTD.

GA-486VS

Processor
80486SX/80487SX/CX486S/CX486S2/80486DX/80486DX4/ODP486SX/ 80486DX2/Pentium Overdrive
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
SIS
Max. Onboard DRAM
128MB
Cache
64/128/256/512KB
BIOS
Award
Dimensions
230mm x 218mm
I/O Options
32-bit VESA local bus slots (3)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J1
External power control port
JP33
Turbo switch
J3
Green LED connector
JP34
Turbo LED
J4
32-bit VESA Local bus slot
S1
Speaker
J5
32-bit VESA Local bus slot
S2
Reset switch
J6
32-bit VESA Local bus slot
S3
Power LED & keylock
J7

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
JP2
N/A
»
Factory configured - do not alter
JP8
N/A
»
Factory configured - do not alter
JP9
N/A
»
Non AMD CPU selection
JP11
Closed

AMD CPU selection
JP11
Open
»
CMOS memory normal operation
JP16
pins 1 & 2 closed

CMOS memory clear
JP16
pins 2 & 3 closed
»
Monitor type select CGA
JP17
Open

Monitor type select all others
JP17
Closed
»
Factory configured - do not alter
JP20
pins 2 & 3 closed
»
DX4 CPU x 3 installed
JP24
Open

DX4 CPU x 2 installed
JP24
Closed
»
Green PC normal operation
JP26
Open

Green PC Green mode
JP26
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
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) 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) 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) 2M x 36
(1) 2M x 36
(1) 2M x 36
NONE

DRAM CONFIGURATION (CONT.)
Size
Bank 0
Bank 1
Bank 2
Bank 3
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
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) 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) 16M x 36
NONE
NONE
NONE
64MB
(1) 4M x 36
(1) 4M x 36
(1) 8M x 36
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
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/(1) 32K x 8
256KB
(4) 64K x 8
NONE
(1) 16K x 8/(1) 32K x 8
512KB
(4) 128K x 8
NONE
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP1
JP2
JP3
JP4
64KB
Open
Open
Open
N/A
128KB
Closed
Open
Open
pins 1 & 2 closed
256KB
Closed
Closed
Open
pins 2 & 3 closed
256KB
Closed
Closed
Open
pins 1 & 2 closed
512KB
Closed
Closed
Closed
pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JP8
JP18
80486SX
pins 2 & 3 closed
Closed
80487SX
N/A
Closed
CX486S
N/A
Open
CX486S2
N/A
Open
80486DX
pins 1 & 2 closed
Closed
ODP486SX
pins 1 & 2 closed
Closed
80486DX2
pins 1 & 2 closed
Closed
80486DX4
N/A
Closed
Pentium Overdrive
N/A
Closed

CPU SPEED CONFIGURATION
Speed
JP5
JP6
JP7
JP29
25MHz
Open
Open
Closed
Open
33MHz
Closed
Closed
Closed
Open
40MHz
Open
Closed
Closed
Closed
50iMHz
Open
Open
Closed
Open
50MHz
Closed
Open
Open
Closed
66iMHz
Closed
Closed
Closed
Open
75i (40 x 2) MHz
Open
Closed
Closed
Closed
75i (25 x 3) MHz
Open
Open
Closed
Open
100i (50 x 2) MHz
Closed
Open
Open
Closed
100i (33 x 3) MHz
Closed
Closed
Closed
Open

CPU VOLTAGE SELECTION
Function
JP36
JP37
5 Voltage
Closed
Closed
3.3 Voltage (DX4)
Open
Open

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Processor	80486SX/80487SX/CX486S/CX486S2/80486DX/80486DX4/ODP486SX/ 80486DX2/Pentium Overdrive
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	SIS
Max. Onboard DRAM	128MB
Cache	64/128/256/512KB
BIOS	Award
Dimensions	230mm x 218mm
I/O Options	32-bit VESA local bus slots (3)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	External power control port	JP33
Turbo switch	J3	Green LED connector	JP34
Turbo LED	J4	32-bit VESA Local bus slot	S1
Speaker	J5	32-bit VESA Local bus slot	S2
Reset switch	J6	32-bit VESA Local bus slot	S3
Power LED & keylock	J7

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP2	N/A
»	Factory configured - do not alter	JP8	N/A
»	Factory configured - do not alter	JP9	N/A
»	Non AMD CPU selection	JP11	Closed
	AMD CPU selection	JP11	Open
»	CMOS memory normal operation	JP16	pins 1 & 2 closed
	CMOS memory clear	JP16	pins 2 & 3 closed
»	Monitor type select CGA	JP17	Open
	Monitor type select all others	JP17	Closed
»	Factory configured - do not alter	JP20	pins 2 & 3 closed
»	DX4 CPU x 3 installed	JP24	Open
	DX4 CPU x 2 installed	JP24	Closed
»	Green PC normal operation	JP26	Open
	Green PC Green mode	JP26	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
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) 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) 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) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE

DRAM CONFIGURATION (CONT.)
Size	Bank 0	Bank 1	Bank 2	Bank 3
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
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) 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) 16M x 36	NONE	NONE	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 8M x 36	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
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/(1) 32K x 8
256KB	(4) 64K x 8	NONE	(1) 16K x 8/(1) 32K x 8
512KB	(4) 128K x 8	NONE	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP1	JP2	JP3	JP4
64KB	Open	Open	Open	N/A
128KB	Closed	Open	Open	pins 1 & 2 closed
256KB	Closed	Closed	Open	pins 2 & 3 closed
256KB	Closed	Closed	Open	pins 1 & 2 closed
512KB	Closed	Closed	Closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JP8	JP18
80486SX	pins 2 & 3 closed	Closed
80487SX	N/A	Closed
CX486S	N/A	Open
CX486S2	N/A	Open
80486DX	pins 1 & 2 closed	Closed
ODP486SX	pins 1 & 2 closed	Closed
80486DX2	pins 1 & 2 closed	Closed
80486DX4	N/A	Closed
Pentium Overdrive	N/A	Closed

CPU SPEED CONFIGURATION
Speed	JP5	JP6	JP7	JP29
25MHz	Open	Open	Closed	Open
33MHz	Closed	Closed	Closed	Open
40MHz	Open	Closed	Closed	Closed
50iMHz	Open	Open	Closed	Open
50MHz	Closed	Open	Open	Closed
66iMHz	Closed	Closed	Closed	Open
75i (40 x 2) MHz	Open	Closed	Closed	Closed
75i (25 x 3) MHz	Open	Open	Closed	Open
100i (50 x 2) MHz	Closed	Open	Open	Closed
100i (33 x 3) MHz	Closed	Closed	Closed	Open

CPU VOLTAGE SELECTION
Function	JP36	JP37
5 Voltage	Closed	Closed
3.3 Voltage (DX4)	Open	Open