VL-BUS Motherboard Settings and Configuration

UNIDENTIFIED

VL-BUS

Processor
CX486S/80486SX/80487SX/CX486M6(WB)/CX486M6(WT)/80486DX/80486DX2/P24T/P24T(WB)/P24T(WT)
Processor Speed
25/33/40/50(internal)/50/66(internal)MHz
Chip Set
UNI
Video Chip Set
None
Maximum Onboard Memory
128MB
Maximum Video Memory
None
Cache
32/64/128/256KB
BIOS
AMI
Dimensions
254mm x 218mm
I/O Options
32-bit VESA local bus slots (3)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Turbo switch
J4
External battery
J8
Turbo LED
J5
Reset switch
J10
Speaker
J6
32-bit VESA local bus slots
SL1 - SL3
Power LED & keylock
J7

USER CONFIGURABLE SETTINGS
Function
Label
Position

Monitor type select monochrome
JP12
Open

Monitor type select CGA
JP12
Closed

Monitor type select VGA/SVGA/EGA/XGA
JP12
Any setting
»
CMOS memory normal operation
JP14
Pins 1 & 2 closed

CMOS memory clear
JP14
Pins 2 & 3 closed
»
Factory configured - do not alter
JP100
Pins 1 & 2 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
1MB
(4) 256K x 9
None
2MB
(4) 256K x 9
(4) 256K x 9
4MB
(4) 1M x 9
None
5MB
(4) 256K x 9
(4) 1M x 9
8MB
(4) 1M x 9
(4) 1M x 9
16MB
(4) 4M x 9
None
20MB
(4) 1M x 9
(4) 4M x 9
20MB
(4) 4M x 9
(4) 1M x 9
32MB
(4) 4M x 9
(4) 4M x 9
64MB
(4) 16M x 9
None
80MB
(4) 16M x 9
(4) 4M x 9
128MB
(4) 16M x 9
(4) 16M x 9

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

CACHE JUMPER CONFIGURATION
Size
JP20
JP21
JP22
JP25
32KB
Open
Open
2 & 3
Open
64KB
Open
Closed
1 & 2
Open
128KB
Closed
Closed
1 & 2, 3 & 4
Open
256KB
Closed
Closed
1 & 2, 4 & 5
Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed
JP16
JP17
JP18
25MHz
Closed
Closed
Open
33MHz
Closed
Open
Closed
40MHz
Open
Closed
Open
50iMHz
Closed
Closed
Open
50MHz
Open
Open
Closed
66iMHz
Closed
Open
Closed

CPU TYPE SELECTION
Type
JP2
CX486S
Pins 5 & 6 closed
80486SX
Pins 5 & 6 closed
80487SX
Pins 1 & 2, 4 & 5, 6 & 7 closed
80486DX
Pins 2 & 3, 4 & 5, 6 & 7 closed
80486DX2
Pins 2 & 3, 4 & 5, 6 & 7 closed
P24T
Pins 1 & 2, 4 & 5, 6 & 7 closed

CPU TYPE SELECTION
Type
JP1
JP4
JP5
JP10
JP11
CX486M6 (WB)
Open
1 & 2
2 & 3
2 & 3
Open
CX486M6 (WT)
Open
2 & 3
1 & 2
1 & 2
Open
80486DX
Open
2 & 3
1 & 2
1 & 2
Open
80486DX2
Open
2 & 3
1 & 2
1 & 2
Open
P24T (WB)
Closed
2 & 3
1 & 2
1 & 2
Closed
P24T (WT)
Open
2 & 3
1 & 2
1 & 2
Open
Note: Pins designated should be in the closed position.

VL-BUS SPEED SELECTION
Setting
JP15
<= 33MHz
Pins 1 & 2 closed
>33 MHz
Pins 2 & 3 closed

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VL-BUS Motherboard Settings and Configuration

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Processor	CX486S/80486SX/80487SX/CX486M6(WB)/CX486M6(WT)/80486DX/80486DX2/P24T/P24T(WB)/P24T(WT)
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	UNI
Video Chip Set	None
Maximum Onboard Memory	128MB
Maximum Video Memory	None
Cache	32/64/128/256KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (3)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Turbo switch	J4	External battery	J8
Turbo LED	J5	Reset switch	J10
Speaker	J6	32-bit VESA local bus slots	SL1 - SL3
Power LED & keylock	J7

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Monitor type select monochrome	JP12	Open
	Monitor type select CGA	JP12	Closed
	Monitor type select VGA/SVGA/EGA/XGA	JP12	Any setting
»	CMOS memory normal operation	JP14	Pins 1 & 2 closed
	CMOS memory clear	JP14	Pins 2 & 3 closed
»	Factory configured - do not alter	JP100	Pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	None
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	None
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	None
20MB	(4) 1M x 9	(4) 4M x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	None
80MB	(4) 16M x 9	(4) 4M x 9
128MB	(4) 16M x 9	(4) 16M x 9

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

CACHE JUMPER CONFIGURATION
Size	JP20	JP21	JP22	JP25
32KB	Open	Open	2 & 3	Open
64KB	Open	Closed	1 & 2	Open
128KB	Closed	Closed	1 & 2, 3 & 4	Open
256KB	Closed	Closed	1 & 2, 4 & 5	Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed	JP16	JP17	JP18
25MHz	Closed	Closed	Open
33MHz	Closed	Open	Closed
40MHz	Open	Closed	Open
50iMHz	Closed	Closed	Open
50MHz	Open	Open	Closed
66iMHz	Closed	Open	Closed

CPU TYPE SELECTION
Type	JP2
CX486S	Pins 5 & 6 closed
80486SX	Pins 5 & 6 closed
80487SX	Pins 1 & 2, 4 & 5, 6 & 7 closed
80486DX	Pins 2 & 3, 4 & 5, 6 & 7 closed
80486DX2	Pins 2 & 3, 4 & 5, 6 & 7 closed
P24T	Pins 1 & 2, 4 & 5, 6 & 7 closed

CPU TYPE SELECTION
Type	JP1	JP4	JP5	JP10	JP11
CX486M6 (WB)	Open	1 & 2	2 & 3	2 & 3	Open
CX486M6 (WT)	Open	2 & 3	1 & 2	1 & 2	Open
80486DX	Open	2 & 3	1 & 2	1 & 2	Open
80486DX2	Open	2 & 3	1 & 2	1 & 2	Open
P24T (WB)	Closed	2 & 3	1 & 2	1 & 2	Closed
P24T (WT)	Open	2 & 3	1 & 2	1 & 2	Open
Note: Pins designated should be in the closed position.

VL-BUS SPEED SELECTION
Setting	JP15
<= 33MHz	Pins 1 & 2 closed
>33 MHz	Pins 2 & 3 closed