G486-EVB (REV. A) Motherboard Settings and Configuration

DIAMOND FLOWER, INC.

G486-EVB (REV. A)

Processor
CX486S/80486SX/SL80486SX/CX486S2/CX486DX/AM486DXL/80486DX/SL80486DX/CX486DX2/AM486DXT(NV8T)/80486DX2/SL80486DX2/SL80486DX4
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)MHz
Chip Set
Unidentified
Video Chip Set
None
Maximum Onboard Memory
64MB
Maximum Video Memory
None
Cache
128/256/512KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slots (3), green PC connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Green PC LED
D6
Green PC connector
JP44
External battery
JP14
Reset switch
JP45
Power LED & keylock
JP40
32-bit VESA local bus slots
SL1 – SL3
Speaker
JP41

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Battery type select external
JP3
Pins 1 & 2 closed

Battery type select internal
JP3
Pins 2 & 3 closed
»
BIOS type select 27512
JP10
Open

BIOS type select 28F010
JP10
Closed
»
Factory configured - do not alter
JP15
Closed

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

CACHE JUMPER CONFIGURATION
Size
JP19
JP20
JP21
JP26
JP27
JP28
128KB
Open
2 & 3
2 & 3
Closed
Closed
Open
256KB
Open
1 & 2
1 & 2
Closed
Closed
Closed
512KB
Closed
2 & 3
1 & 2
Closed
Closed
Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed
JP36
JP37
S1
S2
S3
25MHz
1 & 2
1 & 2
Closed
Open
Open
33MHz
1 & 2
1 & 2
Closed
Closed
Closed
40MHz
1 & 2
1 & 2
Closed
Closed
Open
50iMHz
1 & 2
1 & 2
Closed
Open
Open
66iMHz
1 & 2
1 & 2
Closed
Closed
Closed
75iMHz
1 & 2
1 & 2
Closed
Open
Open
80iMHz
1 & 2
1 & 2
Closed
Closed
Open
100iMHz
1 & 2
1 & 2
Closed
Closed
Closed
120iMHz
1 & 2
1 & 2
Closed
Closed
Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type
JP17
JP18
JP22
JP23
JP24
CX486S
Closed
Open
2 & 3
2 & 3
2 & 3
80486SX
Open
Open
N/A
N/A
N/A
SL80486SX
Open
Open
1 & 2
1 & 2
1 & 2
CX486S2
Closed
Open
2 & 3
2 & 3
2 & 3
CX486DX
Closed
Closed
2 & 3
2 & 3
2 & 3
AM486DXL
Open
Open
Open
Open
Open
80486DX
Open
Open
N/A
N/A
N/A
SL80486DX
Open
Open
1 & 2
1 & 2
1 & 2
CX486DX2
Closed
Closed
2 & 3
2 & 3
2 & 3
AM486DX2 (NV8T)
Open
Open
Open
Open
Open
80486DX2
Open
Open
N/A
N/A
N/A
SL80486DX2
Open
Open
1 & 2
1 & 2
1 & 2
SL80486DX4
Open
Open
1 & 2
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type
JP25
JP29
JP30
JP31
JP49
CX486S
Open
2 & 3
Open
Open
Open
80486SX
N/A
2 & 3
Open
Open
N/A
SL80486SX
Open
2 & 3
Open
Open
Open
CX486S2
Open
2 & 3
Open
Open
Open
CX486DX
Open
1 & 2
2 & 3
Closed
Open
AM486DXL
Closed
1 & 2
2 & 3
Closed
Closed
80486DX
N/A
1 & 2
2 & 3
Closed
N/A
SL80486DX
Open
1 & 2
2 & 3
Closed
Open
CX486DX2
Open
1 & 2
2 & 3
Closed
Open
AM486DX2 (NV8T)
Open
1 & 2
2 & 3
Closed
Open
80486DX2
N/A
1 & 2
2 & 3
Closed
N/A
SL80486DX2
Open
1 & 2
2 & 3
Closed
Open
SL80486DX4
Open
1 & 2
2 & 3
Closed
Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type
JP38
SL-enhanced
Open
Non SL-enhanced
Closed

CPU VOLTAGE SELECTION
Voltage
JP32

3.3v
Pins 5 & 6, 7 & 8 closed
»
5v
Pins 1 & 2, 3 & 4 closed

VL BUS WAIT STATE SELECTION
Setting
JP50

0
Open
»
1
Closed

VL BUS SPEED SELECTION
Speed
JP51

<= 33MHz
Open
»
>33 MHz
Closed

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Processor	CX486S/80486SX/SL80486SX/CX486S2/CX486DX/AM486DXL/80486DX/SL80486DX/CX486DX2/AM486DXT(NV8T)/80486DX2/SL80486DX2/SL80486DX4
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	64MB
Maximum Video Memory	None
Cache	128/256/512KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Green PC LED	D6	Green PC connector	JP44
External battery	JP14	Reset switch	JP45
Power LED & keylock	JP40	32-bit VESA local bus slots	SL1 – SL3
Speaker	JP41

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Battery type select external	JP3	Pins 1 & 2 closed
	Battery type select internal	JP3	Pins 2 & 3 closed
»	BIOS type select 27512	JP10	Open
	BIOS type select 28F010	JP10	Closed
»	Factory configured - do not alter	JP15	Closed

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

CACHE JUMPER CONFIGURATION
Size	JP19	JP20	JP21	JP26	JP27	JP28
128KB	Open	2 & 3	2 & 3	Closed	Closed	Open
256KB	Open	1 & 2	1 & 2	Closed	Closed	Closed
512KB	Closed	2 & 3	1 & 2	Closed	Closed	Closed
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed	JP36	JP37	S1	S2	S3
25MHz	1 & 2	1 & 2	Closed	Open	Open
33MHz	1 & 2	1 & 2	Closed	Closed	Closed
40MHz	1 & 2	1 & 2	Closed	Closed	Open
50iMHz	1 & 2	1 & 2	Closed	Open	Open
66iMHz	1 & 2	1 & 2	Closed	Closed	Closed
75iMHz	1 & 2	1 & 2	Closed	Open	Open
80iMHz	1 & 2	1 & 2	Closed	Closed	Open
100iMHz	1 & 2	1 & 2	Closed	Closed	Closed
120iMHz	1 & 2	1 & 2	Closed	Closed	Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	JP17	JP18	JP22	JP23	JP24
CX486S	Closed	Open	2 & 3	2 & 3	2 & 3
80486SX	Open	Open	N/A	N/A	N/A
SL80486SX	Open	Open	1 & 2	1 & 2	1 & 2
CX486S2	Closed	Open	2 & 3	2 & 3	2 & 3
CX486DX	Closed	Closed	2 & 3	2 & 3	2 & 3
AM486DXL	Open	Open	Open	Open	Open
80486DX	Open	Open	N/A	N/A	N/A
SL80486DX	Open	Open	1 & 2	1 & 2	1 & 2
CX486DX2	Closed	Closed	2 & 3	2 & 3	2 & 3
AM486DX2 (NV8T)	Open	Open	Open	Open	Open
80486DX2	Open	Open	N/A	N/A	N/A
SL80486DX2	Open	Open	1 & 2	1 & 2	1 & 2
SL80486DX4	Open	Open	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP25	JP29	JP30	JP31	JP49
CX486S	Open	2 & 3	Open	Open	Open
80486SX	N/A	2 & 3	Open	Open	N/A
SL80486SX	Open	2 & 3	Open	Open	Open
CX486S2	Open	2 & 3	Open	Open	Open
CX486DX	Open	1 & 2	2 & 3	Closed	Open
AM486DXL	Closed	1 & 2	2 & 3	Closed	Closed
80486DX	N/A	1 & 2	2 & 3	Closed	N/A
SL80486DX	Open	1 & 2	2 & 3	Closed	Open
CX486DX2	Open	1 & 2	2 & 3	Closed	Open
AM486DX2 (NV8T)	Open	1 & 2	2 & 3	Closed	Open
80486DX2	N/A	1 & 2	2 & 3	Closed	N/A
SL80486DX2	Open	1 & 2	2 & 3	Closed	Open
SL80486DX4	Open	1 & 2	2 & 3	Closed	Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	JP38
SL-enhanced	Open
Non SL-enhanced	Closed

CPU VOLTAGE SELECTION
Voltage		JP32
	3.3v	Pins 5 & 6, 7 & 8 closed
»	5v	Pins 1 & 2, 3 & 4 closed

VL BUS WAIT STATE SELECTION
Setting		JP50
	0	Open
»	1	Closed

VL BUS SPEED SELECTION
Speed		JP51
	<= 33MHz	Open
»	>33 MHz	Closed