450L2 CACHE Motherboard Settings and Configuration

UNIDENTIFIED

450L2 CACHE

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
20/25/33/50 (Internal)/50/66 (Internal)MHz
Chip Set
OPTI
Max. onboard DRAM
32MB
Cache
64/128/256KB
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
32-bit local bus slots (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J1
Turbo LED
JP10
Speaker
J17
32-bit local bus slot
S1
Power LED & keylock
J18

S2
Turbo switch
JP9
Reset
SW1
Note:The exact locations of local bus slots S1 and S2 are unknown.

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

CMOS memory clear
JP1
pins 1 & 2 closed
»
Monitor type select color
JP2
Closed

Monitor type select monochrome
JP2
Open
»
Ready signal select ISA
JP3 & JP4
pins 1 & 2 closed

Ready signal select Local bus
JP3 & JP4
pins 2 & 3 closed
»
CPU upgrade (486PQFP to 486PGA) enabled
JP17
Closed

CPU upgrade (486PQFP to 486PGA) disabled
JP17
Open
Note:The location of jumpers JP3 and JP4 is unknown.

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) 1M x 9
(4) 256K 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
Bank 1
TAG (U39)
TAG (U40)
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

CACHE JUMPER CONFIGURATION
Size
JP5
JP6
JP7
JP8
JP15
JP16
64KB
Open
Open
Open
pins 2 & 3
Open
Open
128KB
Closed
Open
Closed
pins 1 & 2
Open
Closed
256KB
Closed
Closed
Closed
pins 2 & 3
Closed
Closed

CPU SPEED CONFIGURATION
Speed
JP11
JP12
JP13
JP14
20MHz
Closed
Closed
Open
Open
25MHz
Open
Closed
Open
Closed
33MHz
Open
Open
Closed
Closed
50i MHz
Open
Closed
Open
Closed
50MHz
Open
Open
Closed
Open
66MHz
Open
Open
Closed
Closed

CPU TYPE CONFIGURATION
Type
JP18
JP19
JP20
80486SX PQFP
Open
Closed
pins 2 & 3 closed
80486SX PGA
Open
Open
pins 2 & 3 closed
80487SX
pins 2 & 3 closed
Closed
pins 1 & 2 closed
80486DX
pins 1 & 2 closed
Closed
pins 1 & 2 closed
ODP486SX
Open
Open
pins 2 & 3 closed
80486DX2
pins 1 & 2 closed
Closed
pins 1 & 2 closed

Headaches Begone! A Systemic Approach To Healing Your Headaches

Don't Let Your Bike Seat Ruin Your Sex Life Book

450L2 CACHE Motherboard Settings and Configuration

Search

My Books

Discover

Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50 (Internal)/50/66 (Internal)MHz
Chip Set	OPTI
Max. onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Turbo LED	JP10
Speaker	J17	32-bit local bus slot	S1
Power LED & keylock	J18		S2
Turbo switch	JP9	Reset	SW1
Note:The exact locations of local bus slots S1 and S2 are unknown.

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP1	pins 2 & 3 closed
	CMOS memory clear	JP1	pins 1 & 2 closed
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open
»	Ready signal select ISA	JP3 & JP4	pins 1 & 2 closed
	Ready signal select Local bus	JP3 & JP4	pins 2 & 3 closed
»	CPU upgrade (486PQFP to 486PGA) enabled	JP17	Closed
	CPU upgrade (486PQFP to 486PGA) disabled	JP17	Open
Note:The location of jumpers JP3 and JP4 is unknown.

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) 1M x 9	(4) 256K 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	Bank 1	TAG (U39)	TAG (U40)
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

CACHE JUMPER CONFIGURATION
Size	JP5	JP6	JP7	JP8	JP15	JP16
64KB	Open	Open	Open	pins 2 & 3	Open	Open
128KB	Closed	Open	Closed	pins 1 & 2	Open	Closed
256KB	Closed	Closed	Closed	pins 2 & 3	Closed	Closed

CPU SPEED CONFIGURATION
Speed	JP11	JP12	JP13	JP14
20MHz	Closed	Closed	Open	Open
25MHz	Open	Closed	Open	Closed
33MHz	Open	Open	Closed	Closed
50i MHz	Open	Closed	Open	Closed
50MHz	Open	Open	Closed	Open
66MHz	Open	Open	Closed	Closed

CPU TYPE CONFIGURATION
Type	JP18	JP19	JP20
80486SX PQFP	Open	Closed	pins 2 & 3 closed
80486SX PGA	Open	Open	pins 2 & 3 closed
80487SX	pins 2 & 3 closed	Closed	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	Closed	pins 1 & 2 closed
ODP486SX	Open	Open	pins 2 & 3 closed
80486DX2	pins 1 & 2 closed	Closed	pins 1 & 2 closed