486EO-50/33/25/20 EISA Motherboard Settings and Configuration

ADVANCED INTEGRATION RESEARCH, INC.

486EO-50/33/25/20 EISA

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
20/25/33/50/66(internal)MHz
Chip Set
OPTI
Max. Onboard DRAM
128MB
Cache
64/128/256/512KB
BIOS
AMI/Phoenix
Dimensions
309mm x 331mm
I/O Options
32-bit external memory card slot, 32-bit external video card slot
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
J4
Turbo LED
J8
Power LED & Keylock
J5
32-bit external memory card
S1
Reset switch
J6
32-bit external video card
VP1
Turbo switch
J7

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
JO3
Open
»
Factory configured - do not alter
JO4
Open
»
Monitor type select monochrome
JP6
Open

Monitor type select color
JP6
Closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(4) 1M x 9
NONE
NONE
NONE
8MB
(4) 1M x 9
(4) 1M x 9
NONE
NONE
12MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
16MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
16MB
(4) 4M x 9
NONE
NONE
NONE
20MB
(4) 1M x 9
(4) 4M x 9
NONE
NONE
24MB
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9
NONE
28MB
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9
(4) 1M x 9
32MB
(4) 4M x 9
(4) 4M x 9
NONE
NONE
36MB
(4) 4M x 9
(4) 4M x 9
(4) 1M x 9
NONE
40MB
(4) 1M x 9
(4) 1M x 9
(4) 4M x 9
(4) 4M x 9
48MB
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
NONE
52MB
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
(4) 1M x 9
64MB
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
(4) 4M x 9
64MB
(4) 16M x 9
NONE
NONE
NONE
128MB
(4) 16M x 9
(4) 16M x 9
NONE
NONE
192MB
(4) 16M x 9
(4) 16M x 9
(4) 16M x 9
NONE
256MB
(4) 16M x 9
(4) 16M x 9
(4) 16M x 9
(4) 16M x 9
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1.

CACHE CONFIGURATION
Size
Bank 0
Bank 1
64KB
(4) 8K x 8
(4) 8K x 8
128KB
(4) 32K x 8
NONE
256KB
(4) 32K x 8
(4) 32K x 8
512KB
(4) 128K x 8
NONE

CACHE JUMPER CONFIGURATION
Size
JP1
JP2
JP3
JP9
JP10
JP11
JP12
64K
Open
Open
Open
Open
Open
Open
2 & 3
128K
Closed
Open
Open
Closed
Open
Open
1 & 2
256K
Closed
Closed
Open
Closed
Open
Closed
2 & 3
512K
Closed
Closed
Closed
Closed
Closed
Closed
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP7
JP8
80486SX
pins 2 & 3 closed
open
80487SX
pins 1 & 2 and 3 & 4 closed
pins 1 & 2 closed
80486DX
pins 1 & 2 and 3 & 4 closed
pins 2 & 3 closed
ODP486SX
pins 1 & 2 and 3 & 4 closed
pins 1 & 2 closed
80486DX2
pins 1 & 2 and 3 & 4 closed
pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed
JO1
JO2
JP4
JP5
JP13
JP14
JP15
20MHz
Open
Closed
Open
Open
2 & 3
Closed
2 & 3
25MHz
Open
Open
Open
Open
2 & 3
Closed
1 & 2
33MHz
Open
Closed
Open
Closed
2 & 3
Open
1 & 2
50iMHz
Open
Open
Open
Open
2 & 3
Closed
1 & 2
50MHz
Open
Open
Closed
Closed
1 & 2
Open
1 & 2
66iMHz
Open
Closed
Open
Closed
2 & 3
Open
1 & 2

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486EO-50/33/25/20 EISA Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	64/128/256/512KB
BIOS	AMI/Phoenix
Dimensions	309mm x 331mm
I/O Options	32-bit external memory card slot, 32-bit external video card slot
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J4	Turbo LED	J8
Power LED & Keylock	J5	32-bit external memory card	S1
Reset switch	J6	32-bit external video card	VP1
Turbo switch	J7

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JO3	Open
»	Factory configured - do not alter	JO4	Open
»	Monitor type select monochrome	JP6	Open
	Monitor type select color	JP6	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(4) 1M x 9	NONE	NONE	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE	NONE	NONE
20MB	(4) 1M x 9	(4) 4M x 9	NONE	NONE
24MB	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9	NONE
28MB	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9	NONE	NONE
36MB	(4) 4M x 9	(4) 4M x 9	(4) 1M x 9	NONE
40MB	(4) 1M x 9	(4) 1M x 9	(4) 4M x 9	(4) 4M x 9
48MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	NONE
52MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	(4) 1M x 9
64MB	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	NONE	NONE	NONE
128MB	(4) 16M x 9	(4) 16M x 9	NONE	NONE
192MB	(4) 16M x 9	(4) 16M x 9	(4) 16M x 9	NONE
256MB	(4) 16M x 9	(4) 16M x 9	(4) 16M x 9	(4) 16M x 9
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1.

CACHE CONFIGURATION
Size	Bank 0	Bank 1
64KB	(4) 8K x 8	(4) 8K x 8
128KB	(4) 32K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8
512KB	(4) 128K x 8	NONE

CACHE JUMPER CONFIGURATION
Size	JP1	JP2	JP3	JP9	JP10	JP11	JP12
64K	Open	Open	Open	Open	Open	Open	2 & 3
128K	Closed	Open	Open	Closed	Open	Open	1 & 2
256K	Closed	Closed	Open	Closed	Open	Closed	2 & 3
512K	Closed	Closed	Closed	Closed	Closed	Closed	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP7	JP8
80486SX	pins 2 & 3 closed	open
80487SX	pins 1 & 2 and 3 & 4 closed	pins 1 & 2 closed
80486DX	pins 1 & 2 and 3 & 4 closed	pins 2 & 3 closed
ODP486SX	pins 1 & 2 and 3 & 4 closed	pins 1 & 2 closed
80486DX2	pins 1 & 2 and 3 & 4 closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	JO1	JO2	JP4	JP5	JP13	JP14	JP15
20MHz	Open	Closed	Open	Open	2 & 3	Closed	2 & 3
25MHz	Open	Open	Open	Open	2 & 3	Closed	1 & 2
33MHz	Open	Closed	Open	Closed	2 & 3	Open	1 & 2
50iMHz	Open	Open	Open	Open	2 & 3	Closed	1 & 2
50MHz	Open	Open	Closed	Closed	1 & 2	Open	1 & 2
66iMHz	Open	Closed	Open	Closed	2 & 3	Open	1 & 2