VLB S14 (SIS486) Motherboard Settings and Configuration

COMPUTREND SYSTEMS, INC.

VLB S14 (SIS486)

Processor
80486SX/SL80486SX/CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/ AM486DX2/80486DX2/SL80486DX2
Processor Speed
25/33/40/50(internal)/50/66(internal)MHz
Chip Set
SIS
Max. Onboard DRAM
128MB
Cache
128/256KB
BIOS
AMI/Phoenix
Dimensions
260mm x 221mm
I/O Options
Floppy drive interface, game interface, green PC connector, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Game interface
CN1
Power LED & keylock
JFP pins 1 - 5
PS/2 mouse port
CN2
Speaker
JFP pins 7 - 10
Serial port 1
CN3
Turbo LED
JFP pins 12 & 13
Serial port 2
CN4
Turbo switch
JFP pins 15 - 17
Parallel port
CN5
Reset switch
JFP pins 19 & 20
VGA port
CN6
IDE interface LED
JFPA
Floppy drive interface
CN7
Green PC connector (monitor)
JG1
VGA feature connector
CN8
Green PC LED
JG2
IDE interface
CN9
Green PC connector
JG3
External battery
JB
Riser slot
SL1

USER CONFIGURABLE SETTINGS
Function
Jumper
Position

Battery type select internal
JB
Pins 2 & 3 closed

Battery type select external
JB
Closed

Serial port 1 select COM1
JCOM1
Pins 1 & 2 closed

Serial port 1 select COM3
JCOM1
Pins 2 & 3 closed

Serial port 2 select COM2
JCOM2
Pins 1 & 2 closed

Serial port 2 select COM4
JCOM2
Pins 2 & 3 closed

Floppy drive interface enabled
JFDD
Pins 1 & 2 closed

Floppy drive interface disabled
JFDD
Pins 2 & 3 closed

Game port enabled
JGAME
Pins 1 & 2 closed

Game port disabled
JGAME
Pins 2 & 3 closed

IDE interface enabled
JHDD
Pins 1 & 2 closed

IDE interface disabled
JHDD
Pins 2 & 3 closed

Parallel port select LPT1
JPP1
Pins 1 & 2 closed

Parallel port select LPT2
JPP1
Pins 2 & 3 closed

Parallel port select IRQ7
JPP2
Pins 1 & 2 closed

Parallel port select IRQ5
JPP2
Pins 2 & 3 closed

On board VGA enabled
JVGA
Pins 1 & 2 closed

On board VGA disabled
JVGA
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) 512K x 36
None
None
None
2MB
(1) 256K x 36
(1) 256K x 36
None
None
4MB
(1) 1M x 36
None
None
None
4MB
(1) 512K x 36
(1) 256K x 36
(1) 256K x 36
None
4MB
(1) 512K x 36
(1) 512K x 36
None
None
4MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
5MB
(1) 1M x 36
(1) 256K x 36
None
None
5MB
(1) 256K x 36
(1) 512K x 36
(1) 512K x 36
None
5MB
(1) 256K x 36
(1) 1M x 36
None
None

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
6MB
(1) 1M x 36
(1) 512K x 36
None
None
8MB
(1) 2M x 36
None
None
None
8MB
(1) 1M x 36
(1) 512K x 36
(1) 512K x 36
None
8MB
(1) 1M x 36
(1) 1M x 36
None
None
9MB
(1) 2M x 36
(1) 256K x 36
None
None
9MB
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
None
9MB
(1) 256K x 36
(1) 2M x 36
None
None
10MB
(1) 256K x 36
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
12MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
None
12MB
(1) 2M x 36
(1) 1M x 36
None
None
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) 4M x 36
None
None
None
16MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
None
16MB
(1) 2M 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
17MB
(1) 4M x 36
(1) 256K x 36
None
None
18MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
None
20MB
(1) 4M x 36
(1) 512K x 36
(1) 512K x 36
None
20MB
(1) 4M x 36
(1) 1M x 36
None
None
20MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
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
32MB
(1) 8M x 36
None
None
None
32MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
None
32MB
(1) 4M x 36
(1) 4M x 36
None
None
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
35MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
36MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
None
36MB
(1) 8M x 36
(1) 1M x 36
None
None
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) 8M x 36
(1) 1M x 36
(1) 1M x 36
None
40MB
(1) 8M x 36
(1) 2M x 36
None
None
40MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
40MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
None
40MB
(1) 2M x 36
(1) 8M x 36
None
None
44MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
48MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
None
48MB
(1) 8M x 36
(1) 4M x 36
None
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
49MB
(1) 256K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
50MB
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
52MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
56MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
56MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
64MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
None
64MB
(1) 8M 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
72MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
None
80MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
80MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
None
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
None
98MB
(1) 512K x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
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
128KB
(4) 32K x 8
None
(1) 8K/16K/32K x 8
256KB (A)
(4) 32K x 8
(4) 32K x 8
(1) 16K/32K x 8
256KB (B)
(4) 64K x 8
None
(1) 16K/32K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
128KB
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
256KB (A)
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
256KB (B)
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JC2
JC3
JC4
JC5
Cyrix
2 & 3, 5 & 6
2 & 3, 5 & 6
2 & 3, 5 & 6
2 & 3, 5 & 6
AMD
6 & 7
6 & 7
6 & 7
6 & 7
Intel
6 & 7
6 & 7
6 & 7
6 & 7
Intel SL-series
1 & 2, 6 & 7
1 & 2, 6 & 7
1 & 2, 6 & 7
1 & 2, 6 & 7
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JC6
JC7
Cyrix
Pins 1 & 2 closed
Pins 2 & 3 closed
AMD
Pins 2 & 3 closed
Pins 1 & 2 closed
Intel
Pins 2 & 3 closed
Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JC1
SX
Pins 2 & 3, 5 & 6, 7 & 8 closed
DX
Pins 4 & 7, 2 & 5, 6 & 9 closed
DX2
Pins 1 & 4, 2 & 5, 6 & 9 closed

CPU SPEED CONFIGURATION
Speed
JK1
JK2
JK3
JK4
25MHz
Pins 2 & 3 closed
Closed
Closed
Closed
33MHz
Pins 1 & 2 closed
Closed
Open
Closed
40MHz
Pins 1 & 2 closed
Closed
Closed
Open
50iMHz
Pins 2 & 3 closed
Closed
Closed
Closed
50MHz
Pins 1 & 2 closed
Open
Closed
Closed
66iMHz
Pins 1 & 2 closed
Closed
Open
Closed

CPU VOLTAGE CONFIGURATION
Voltage
JP24
3.3v
Pins 7 & 8, 9 & 10 closed
5v
Pins 1 & 2, 3 & 4 closed

VIDEO MEMORY CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
512KB
(1) 256K x 16
None
None
1MB
(1) 256K x 16
(1) 256K x 16
None
2MB
(1) 256K x 16
(1) 256K x 16
(2) 256K x 16

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VLB S14 (SIS486) Motherboard Settings and Configuration

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Processor	80486SX/SL80486SX/CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/ AM486DX2/80486DX2/SL80486DX2
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	SIS
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	AMI/Phoenix
Dimensions	260mm x 221mm
I/O Options	Floppy drive interface, game interface, green PC connector, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Game interface	CN1	Power LED & keylock	JFP pins 1 - 5
PS/2 mouse port	CN2	Speaker	JFP pins 7 - 10
Serial port 1	CN3	Turbo LED	JFP pins 12 & 13
Serial port 2	CN4	Turbo switch	JFP pins 15 - 17
Parallel port	CN5	Reset switch	JFP pins 19 & 20
VGA port	CN6	IDE interface LED	JFPA
Floppy drive interface	CN7	Green PC connector (monitor)	JG1
VGA feature connector	CN8	Green PC LED	JG2
IDE interface	CN9	Green PC connector	JG3
External battery	JB	Riser slot	SL1

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	Battery type select internal	JB	Pins 2 & 3 closed
	Battery type select external	JB	Closed
	Serial port 1 select COM1	JCOM1	Pins 1 & 2 closed
	Serial port 1 select COM3	JCOM1	Pins 2 & 3 closed
	Serial port 2 select COM2	JCOM2	Pins 1 & 2 closed
	Serial port 2 select COM4	JCOM2	Pins 2 & 3 closed
	Floppy drive interface enabled	JFDD	Pins 1 & 2 closed
	Floppy drive interface disabled	JFDD	Pins 2 & 3 closed
	Game port enabled	JGAME	Pins 1 & 2 closed
	Game port disabled	JGAME	Pins 2 & 3 closed
	IDE interface enabled	JHDD	Pins 1 & 2 closed
	IDE interface disabled	JHDD	Pins 2 & 3 closed
	Parallel port select LPT1	JPP1	Pins 1 & 2 closed
	Parallel port select LPT2	JPP1	Pins 2 & 3 closed
	Parallel port select IRQ7	JPP2	Pins 1 & 2 closed
	Parallel port select IRQ5	JPP2	Pins 2 & 3 closed
	On board VGA enabled	JVGA	Pins 1 & 2 closed
	On board VGA disabled	JVGA	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) 512K x 36	None	None	None
2MB	(1) 256K x 36	(1) 256K x 36	None	None
4MB	(1) 1M x 36	None	None	None
4MB	(1) 512K x 36	(1) 256K x 36	(1) 256K x 36	None
4MB	(1) 512K x 36	(1) 512K x 36	None	None
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
5MB	(1) 1M x 36	(1) 256K x 36	None	None
5MB	(1) 256K x 36	(1) 512K x 36	(1) 512K x 36	None
5MB	(1) 256K x 36	(1) 1M x 36	None	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
6MB	(1) 1M x 36	(1) 512K x 36	None	None
8MB	(1) 2M x 36	None	None	None
8MB	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
9MB	(1) 2M x 36	(1) 256K x 36	None	None
9MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	None
9MB	(1) 256K x 36	(1) 2M x 36	None	None
10MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	None
12MB	(1) 2M x 36	(1) 1M x 36	None	None
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) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 2M 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
17MB	(1) 4M x 36	(1) 256K x 36	None	None
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	None
20MB	(1) 4M x 36	(1) 512K x 36	(1) 512K x 36	None
20MB	(1) 4M x 36	(1) 1M x 36	None	None
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
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
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
35MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 8M x 36	(1) 512K x 36	(1) 512K x 36	None
36MB	(1) 8M x 36	(1) 1M x 36	None	None
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) 8M x 36	(1) 1M x 36	(1) 1M x 36	None
40MB	(1) 8M x 36	(1) 2M x 36	None	None
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
40MB	(1) 2M x 36	(1) 4M x 36	(1) 4M x 36	None
40MB	(1) 2M x 36	(1) 8M x 36	None	None
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	None
48MB	(1) 8M x 36	(1) 4M x 36	None	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
49MB	(1) 256K x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	None	(1) 8K/16K/32K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 16K/32K x 8
256KB (B)	(4) 64K x 8	None	(1) 16K/32K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3
128KB	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB (A)	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
256KB (B)	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JC2	JC3	JC4	JC5
Cyrix	2 & 3, 5 & 6	2 & 3, 5 & 6	2 & 3, 5 & 6	2 & 3, 5 & 6
AMD	6 & 7	6 & 7	6 & 7	6 & 7
Intel	6 & 7	6 & 7	6 & 7	6 & 7
Intel SL-series	1 & 2, 6 & 7	1 & 2, 6 & 7	1 & 2, 6 & 7	1 & 2, 6 & 7
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JC6	JC7
Cyrix	Pins 1 & 2 closed	Pins 2 & 3 closed
AMD	Pins 2 & 3 closed	Pins 1 & 2 closed
Intel	Pins 2 & 3 closed	Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JC1
SX	Pins 2 & 3, 5 & 6, 7 & 8 closed
DX	Pins 4 & 7, 2 & 5, 6 & 9 closed
DX2	Pins 1 & 4, 2 & 5, 6 & 9 closed

CPU SPEED CONFIGURATION
Speed	JK1	JK2	JK3	JK4
25MHz	Pins 2 & 3 closed	Closed	Closed	Closed
33MHz	Pins 1 & 2 closed	Closed	Open	Closed
40MHz	Pins 1 & 2 closed	Closed	Closed	Open
50iMHz	Pins 2 & 3 closed	Closed	Closed	Closed
50MHz	Pins 1 & 2 closed	Open	Closed	Closed
66iMHz	Pins 1 & 2 closed	Closed	Open	Closed

CPU VOLTAGE CONFIGURATION
Voltage	JP24
3.3v	Pins 7 & 8, 9 & 10 closed
5v	Pins 1 & 2, 3 & 4 closed

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
512KB	(1) 256K x 16	None	None
1MB	(1) 256K x 16	(1) 256K x 16	None
2MB	(1) 256K x 16	(1) 256K x 16	(2) 256K x 16