OPTI-495SLC-3/486WB CACHE Motherboard Settings and Configuration

UNIDENTIFIED

OPTI-495SLC-3/486WB CACHE

Processor
80386DX/80486SX/80486DX /80486DX2/ODP486SX
Processor Speed
25/33/40/50/66(internal)MHz
Chip Set
OPTI
Max. Onboard DRAM
64MB
Cache
64/128/256KB
BIOS
AMI
Dimensions
249mm x 218mm
I/O Options
32-bit VESA local bus slots (2),
NPU Options
80387DX

CONNECTIONS
Purpose
Location
Purpose
Location
Power LED & keylock
J1
Turbo LED
J5
Speaker
J2
External battery
J6
Turbo switch
J3
32-bit VESA Local bus slots
S1
Reset switch
J4
32-bit VESA Local bus slots
S2

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Monitor type select color
JP21
open

Monitor type select monochrome
JP21
closed
»
Factory configured - do not alter
JP23
open

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
17MB
(4) 256K x 9
(4) 4M x 9
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

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG(U18)
TAG(U19)
64KB
(4) 8K x 8
(4) 8K x 8
(1) 8K x 8
NONE
128KB
(4) 32K x 8
NONE
(1) 8K x 8
NONE
256KB
(4) 32K x 8
(4) 32K x 8
(1) 8K x 8
(1) 8K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
NONE

CACHE SIZE JUMPER CONFIGURATION
Size
JP10
JP11
JP16
JP17
64KB
pins 2 & 3 closed
pins 2 & 3 closed
open
open
128KB
pins 1 & 2 closed
pins 1 & 2 closed
closed
open
256KB
pins 2 & 3 closed
pins 2 & 3 closed
closed
closed

80386 AND CX80486DLC CPU CONFIGURATION
Speed
JP6
JP7
JP8
JP9
JP22
33MHz
closed
closed
open
pins 2 & 3
open
33MHz
closed
closed
open
pins 2 & 3
open
40MHz
closed
closed
closed
pins 2 & 3
open
Note:Pins designated should be in the closed position.

CPU TYPE SELECT
CPU Type
JP2
JP14
JP15
JP18
JP19
JP20
JP25
JP27
80386DX(PQFP)
N/A
open
open
N/A
N/A
2 & 3
1 & 2
1 & 2
80386DX(PGA)
N/A
open
closed
N/A
N/A
2 & 3
1 & 2
1 & 2
80486DLC(PGA)
N/A
closed
closed
N/A
N/A
1 & 2
2 & 3
2 & 3
80486SX(PGA)
open
closed
closed
open
2 & 3
1 & 2
2 & 3
2 & 3
80487SX
2 & 3
N/A
N/A
closed
1 & 2
N/A
N/A
N/A
80486DX
1 & 2
closed
closed
closed
1 & 2
1 & 2
2 & 3
2 & 3
ODP80486
2 & 3
closed
closed
closed
1 & 2
1 & 2
2 & 3
2 & 3
80486DX2
1 & 2
closed
closed
closed
1 & 2
1 & 2
2 & 3
2 & 3
Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
CPU Type
JP6
JP7
JP8
JP9
JP22
25MHz
open
open
open
pins 1 & 2
closed
33MHz
open
open
closed
pins 1 & 2
open
40MHz
open
closed
closed
pins 1 & 2
open
50i MHz
open
open
open
pins 1 & 2
closed
50MHz
open
closed
open
pins 1 & 2
open
66i MHz
open
open
closed
pins 1 & 2
open
Note:Pins designated should be in the closed position.

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OPTI-495SLC-3/486WB CACHE Motherboard Settings and Configuration

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Processor	80386DX/80486SX/80486DX /80486DX2/ODP486SX
Processor Speed	25/33/40/50/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	64MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	249mm x 218mm
I/O Options	32-bit VESA local bus slots (2),
NPU Options	80387DX

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Turbo LED	J5
Speaker	J2	External battery	J6
Turbo switch	J3	32-bit VESA Local bus slots	S1
Reset switch	J4	32-bit VESA Local bus slots	S2

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Monitor type select color	JP21	open
	Monitor type select monochrome	JP21	closed
»	Factory configured - do not alter	JP23	open

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
17MB	(4) 256K x 9	(4) 4M x 9
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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG(U18)	TAG(U19)
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8	NONE
128KB	(4) 32K x 8	NONE	(1) 8K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8	(1) 8K x 8	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8	NONE

CACHE SIZE JUMPER CONFIGURATION
Size	JP10	JP11	JP16	JP17
64KB	pins 2 & 3 closed	pins 2 & 3 closed	open	open
128KB	pins 1 & 2 closed	pins 1 & 2 closed	closed	open
256KB	pins 2 & 3 closed	pins 2 & 3 closed	closed	closed

80386 AND CX80486DLC CPU CONFIGURATION
Speed	JP6	JP7	JP8	JP9	JP22
33MHz	closed	closed	open	pins 2 & 3	open
33MHz	closed	closed	open	pins 2 & 3	open
40MHz	closed	closed	closed	pins 2 & 3	open
Note:Pins designated should be in the closed position.

CPU TYPE SELECT
CPU Type	JP2	JP14	JP15	JP18	JP19	JP20	JP25	JP27
80386DX(PQFP)	N/A	open	open	N/A	N/A	2 & 3	1 & 2	1 & 2
80386DX(PGA)	N/A	open	closed	N/A	N/A	2 & 3	1 & 2	1 & 2
80486DLC(PGA)	N/A	closed	closed	N/A	N/A	1 & 2	2 & 3	2 & 3
80486SX(PGA)	open	closed	closed	open	2 & 3	1 & 2	2 & 3	2 & 3
80487SX	2 & 3	N/A	N/A	closed	1 & 2	N/A	N/A	N/A
80486DX	1 & 2	closed	closed	closed	1 & 2	1 & 2	2 & 3	2 & 3
ODP80486	2 & 3	closed	closed	closed	1 & 2	1 & 2	2 & 3	2 & 3
80486DX2	1 & 2	closed	closed	closed	1 & 2	1 & 2	2 & 3	2 & 3
Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
CPU Type	JP6	JP7	JP8	JP9	JP22
25MHz	open	open	open	pins 1 & 2	closed
33MHz	open	open	closed	pins 1 & 2	open
40MHz	open	closed	closed	pins 1 & 2	open
50i MHz	open	open	open	pins 1 & 2	closed
50MHz	open	closed	open	pins 1 & 2	open
66i MHz	open	open	closed	pins 1 & 2	open
Note:Pins designated should be in the closed position.