G486EVL Motherboard Settings and Configuration

JOINDATA SYSTEMS, INC.

G486EVL

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set
EFAR
Max. Onboard DRAM
32MB
Cache
64/256KB
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slots (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
32-bit VESA local bus slots
J1 & J2
Power LED & keylock
J13
Turbo LED
J10
Reset switch
J14
Turbo switch
J11
External battery
JP2
Speaker
J12

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
CMOS memory normal operation
JP1
pins 2 & 3 closed

CMOS memory clear
JP1
pins 1 & 2 closed
»
CPU speed select 20/25/33MHz
JP33
pins 2 & 3 closed

CPU speed select 50MHz
JP33
pins 1 & 2 closed
»
VESA bus select 0 wait states
JP34
pins 1 & 2 closed

VESA bus select 1 wait state
JP34
pins 2 & 3 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
32MB
(4) 4M x 9
(4) 4M x 9

CACHE CONFIGURATION
Size
Bank 0
TAG
64KB
(8) 8K x 8
(1) 8K x 8
256KB
(8) 32K x 8
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP13
JP14
JP15
64KB
Open
Open
Open
256KB
Closed
Closed
Closed

CPU TYPE CONFIGURATION
Type
OSC1
JP9
JP12
JP17
JP18
80486SX-20
20MHz
2 & 3
Open
2 & 3
Open
80486SX-20
40MHz
1 & 2
Open
2 & 3
Open
80486SX-25
25MHz
2 & 3
Open
2 & 3
Open
80486SX-25
50MHz
1 & 2
Open
2 & 3
Open
80486DX-25
50MHz
1 & 2
2 & 3
1 & 2
Closed
80486DX-25
25MHz
2 & 3
2 & 3
1 & 2
Closed
80487SX-25
50MHz
1 & 2
1 & 2
1 & 2
Closed
80487SX-25
25MHz
2 & 3
1 & 2
1 & 2
Closed
80486DX-33
66MHz
1 & 2
2 & 3
1 & 2
Closed
80486DX-33
33MHz
2 & 3
2 & 3
1 & 2
Closed
80486DX2-50
25MHz
2 & 3
2 & 3
1 & 2
Closed
80486DX2-66
33MHz
2 & 3
2 & 3
1 & 2
Closed
Note:Pins designated should be in the closed position.

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set	EFAR
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
32-bit VESA local bus slots	J1 & J2	Power LED & keylock	J13
Turbo LED	J10	Reset switch	J14
Turbo switch	J11	External battery	JP2
Speaker	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP1	pins 2 & 3 closed
	CMOS memory clear	JP1	pins 1 & 2 closed
»	CPU speed select 20/25/33MHz	JP33	pins 2 & 3 closed
	CPU speed select 50MHz	JP33	pins 1 & 2 closed
»	VESA bus select 0 wait states	JP34	pins 1 & 2 closed
	VESA bus select 1 wait state	JP34	pins 2 & 3 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
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(8) 8K x 8	(1) 8K x 8
256KB	(8) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP13	JP14	JP15
64KB	Open	Open	Open
256KB	Closed	Closed	Closed

CPU TYPE CONFIGURATION
Type	OSC1	JP9	JP12	JP17	JP18
80486SX-20	20MHz	2 & 3	Open	2 & 3	Open
80486SX-20	40MHz	1 & 2	Open	2 & 3	Open
80486SX-25	25MHz	2 & 3	Open	2 & 3	Open
80486SX-25	50MHz	1 & 2	Open	2 & 3	Open
80486DX-25	50MHz	1 & 2	2 & 3	1 & 2	Closed
80486DX-25	25MHz	2 & 3	2 & 3	1 & 2	Closed
80487SX-25	50MHz	1 & 2	1 & 2	1 & 2	Closed
80487SX-25	25MHz	2 & 3	1 & 2	1 & 2	Closed
80486DX-33	66MHz	1 & 2	2 & 3	1 & 2	Closed
80486DX-33	33MHz	2 & 3	2 & 3	1 & 2	Closed
80486DX2-50	25MHz	2 & 3	2 & 3	1 & 2	Closed
80486DX2-66	33MHz	2 & 3	2 & 3	1 & 2	Closed
Note:Pins designated should be in the closed position.