VL/I-486SV2G (REV. 1.0) Motherboard Settings and Configuration

Processor	CX486S/80486SX/SL80486SX/486 Overdrive/SL486 Overdrive/ 80487SX/CX486DX/80486DX/SL80486DX/80486DX2/SL80486DX2/CX486DX2/80486DX4/P24T
Processor Speed	20/25/33/40/50(internal)/50/66(internal)/75(internal)/ 100(internal)MHz
Chip Set	SIS
Video Chip Set	None
Maximum Onboard Memory	64MB
Maximum Video Memory	None
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (2), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Green PC connector	JP2
Speaker	J2	Green PC connector	JP3
Reset switch	J3	Green PC connector	JP4
Turbo LED	J4	Green PC connector	JP28
Turbo switch	J5	32-bit VESA local bus slots	SL1 & SL2
External battery	J6

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Battery type select internal	JP1	Pins 1 & 2 closed
	Battery type select external	JP1	Pins 2 & 3 closed
»	IRQ12 enabled	JP7	Pins 1 & 2 closed
	IRQ12 disabled	JP7	Pins 2 & 3 closed
»	Factory configured - do not alter	JP8	Unidentified
	Monitor type select monochrome/VGA	JP9	Pins 1 & 2 closed
	Monitor type select CGA	JP9	Pins 2 & 3 closed
	Green PC enabled (JP28)	JP10	Pins 2 & 3 closed
	Green PC disabled (RC control)	JP10	Pins 1 & 2 closed
»	VESA clock delay enabled	JP24	Pins 1 & 2 closed
	VESA clock delay disabled	JP24	Pins 2 & 3 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) 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	None	(1) 1M x 36	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
10MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
10MB	(1) 256K x 36	(1) 256K x 36	(1) 2M x 36	None
10MB	(1) 512K x 36	None	(1) 1M x 36	(1) 1M x 36
10MB	(1) 512K x 36	None	(1) 2M x 36	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
12MB	(1) 2M x 36	None	(1) 1M x 36	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 2M x 36	None
16MB	(1) 2M x 36	None	(1) 2M x 36	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
16MB	(1) 2M x 36	None	(1) 1M x 36	(1) 1M x 36
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	None	(1) 4M x 36	None
20MB	(1) 1M x 36	(1) 4M x 36	None	None
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	None
24MB	(1) 2M x 36	None	(1) 4M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 8M x 36	None	None	None
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	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
40MB	(1) 2M x 36	None	(1) 4M x 36	(1) 4M x 36
40MB	(1) 2M x 36	None	(1) 8M x 36	None
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	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) 8M x 36	None	(1) 8M x 36	None
Note: The location of banks 0, 1, 2, & 3 are unidentified.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	None	(1) 8K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	None	(1) 32K x 8
512KB (A)	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
512KB (B)	(4) 128K x 8	None	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 128K x 8

CACHE JUMPER CONFIGURATION
Size	JP13	JP14	JP25
128KB	Open	Pins 2 & 3 closed	Pins 1 & 2 closed
256KB (A)	Open	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB (B)	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
512KB (A)	Pins 4 & 5 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
512KB (B)	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
1MB	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed

CPU SPEED SELECTION
Speed	JP21	JP22	JP23
20MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
25MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
33MHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
40MHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
50iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
50MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
66iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
75iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
100iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

CPU TYPE SELECTION
Type	JP16	JP17	JP18	JP19	JP20
CX468S	2 & 3, 4 & 5	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
80486SX	Open	Open	Open	2 & 3	2 & 3
SL80486SX	3 & 4, 5 & 6	Open	4 & 5	2 & 3	2 & 3
486 Overdrive	Open	Open	Open	1 & 2	2 & 3
SL486 Overdrive	5 & 6	Open	4 & 5	1 & 2	2 & 3
80487SX	Open	Open	Open	1 & 2	2 & 3
CX486DX	2 & 3, 4 & 5	1 & 2	1 & 2, 3 & 4	1 & 2	2 & 3
80486DX	Open	Open	Open	1 & 2	2 & 3
SL80486DX	3 & 4, 5 & 6	Open	4 & 5	1 & 2	2 & 3
80486DX2	Open	Open	Open	1 & 2	2 & 3
SL80486DX2	3 & 4, 5 & 6	Open	4 & 5	1 & 2	2 & 3
CX486DX2	2 & 3, 4 & 5	1 & 2	1 & 2, 3 & 4	1 & 2, 4 & 5	2 & 3
80486DX4 (2x)	3 & 4, 5 & 6	5 & 6	4 & 5	1 & 2	2 & 3
80486DX4 (2.5x)	3 & 4, 5 & 6	4 & 5	4 & 5	1 & 2	2 & 3
80486DX4 (3x)	3 & 4, 5 & 6	Open	4 & 5	1 & 2	2 & 3
P24T	5 & 6	Open	4 & 5	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	JP11
Cyrix	Pins 1 & 2 closed
Intel	Pins 2 & 3 closed

CPU HARDWARE TRAP SELECTION
Type	JP5	JP6
CX468S	Pins 2 & 3 closed	Pins 1 & 2 closed
80486SX	Pins 1 & 2 closed	Pins 2 & 3 closed
SL80486SX	Pins 1 & 2 closed	Pins 2 & 3 closed
CX486DX	Pins 2 & 3 closed	Pins 1 & 2 closed
80486DX	Pins 1 & 2 closed	Pins 2 & 3 closed
SL80486DX	Pins 1 & 2 closed	Pins 2 & 3 closed
80486DX2	Pins 1 & 2 closed	Pins 2 & 3 closed
SL80486DX2	Pins 1 & 2 closed	Pins 2 & 3 closed
CX486DX2	Pins 2 & 3 closed	Pins 1 & 2 closed
80486DX4	Pins 1 & 2 closed	Pins 2 & 3 closed
P24T	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU VOLTAGE SELECTION
Voltage	JP12	JP15
3v	Pins 2 & 3 closed	Pins 2 & 3 closed
5v	Pins 1 & 2 closed	Pins 1 & 2 closed

VL BUS WAIT STATE SELECTION
Setting	JP26
0	Pins 1 & 2 closed
1	Pins 2 & 3 closed

VL BUS SPEED SELECTION
Speed	JP27
<= 33MHz	Pins 1 & 2 closed
>33 MHz	Pins 2 & 3 closed