486 25/33 Motherboard Settings and Configuration

U.S. INTEGRATED TECHNOLOGIES, INC.

486 25/33

Processor
80486DX
Processor Speed
25/33/40MHz
Chip Set
Unidentified
Max. Onboard DRAM
32MB
Cache
64/256KB
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
32-bit external memory card slot
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
JP8
Reset switch
SW1
External battery
JP10
32-bit external memory card
S2
Power LED & keylock
JP11

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Monitor type select color
JP1
Closed

Monitor type select monochrome
JP1
Open
»
Speaker type select internal
JP7
pins 1 & 2 closed

Speaker type select external
JP7
pins 2 & 3 closed
»
Battery type select internal
JP9
pins 1 & 2 closed

Battery type select external
JP9
pins 2 & 3 closed
»
Factory configured - do not alter
JP31
Closed
»
Factory configured - do not alter
JP32
Open
»
Factory configured - do not alter
JP33
Closed
»
Factory configured - do not alter
JP34
Closed
»
Factory configured - do not alter
JP35
Closed
»
Factory configured - do not alter
JP36
Closed
»
Factory configured - do not alter
JP37
Closed
»
Factory configured - do not alter
JP39
pins 2 & 3 closed
»
Factory configured - do not alter
JP40
pins 1 & 2 closed
»
Factory configured - do not alter
JP41
pins 2 & 3 closed
»
Factory configured - do not alter
JP45
pins 1 & 2, 3 & 4 closed
»
Factory configured - do not alter
JP46
pins 1 & 2, 3 & 4 closed
»
Factory configured - do not alter
JP48
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) 1 M 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
32MB
(4) 4M x 9
(4) 4M x 9

CACHE CONFIGURATION
Size
Bank 0
TAG
64KB
(8) 8K x 8
(2) 16K x 4
256KB
(8) 32K x 8
(2) 16K x 4

CACHE JUMPER CONFIGURATION
Size
JP4
JP5
JP6
JP20
JP21
64KB
Open
2 & 3
2 & 3
Open
Open
256KB
Closed
1 & 2
1 & 2
Closed
Closed
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
S1/3
S1/4
S1/5
S1/6
25MHz
On
Off
Off
Off
33MHz
On
Off
Open
On
40MHz
Off
On
Off
On

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486 25/33 Motherboard Settings and Configuration

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Processor	80486DX
Processor Speed	25/33/40MHz
Chip Set	Unidentified
Max. Onboard DRAM	32MB
Cache	64/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card slot
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	JP8	Reset switch	SW1
External battery	JP10	32-bit external memory card	S2
Power LED & keylock	JP11

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP1	Closed
	Monitor type select monochrome	JP1	Open
»	Speaker type select internal	JP7	pins 1 & 2 closed
	Speaker type select external	JP7	pins 2 & 3 closed
»	Battery type select internal	JP9	pins 1 & 2 closed
	Battery type select external	JP9	pins 2 & 3 closed
»	Factory configured - do not alter	JP31	Closed
»	Factory configured - do not alter	JP32	Open
»	Factory configured - do not alter	JP33	Closed
»	Factory configured - do not alter	JP34	Closed
»	Factory configured - do not alter	JP35	Closed
»	Factory configured - do not alter	JP36	Closed
»	Factory configured - do not alter	JP37	Closed
»	Factory configured - do not alter	JP39	pins 2 & 3 closed
»	Factory configured - do not alter	JP40	pins 1 & 2 closed
»	Factory configured - do not alter	JP41	pins 2 & 3 closed
»	Factory configured - do not alter	JP45	pins 1 & 2, 3 & 4 closed
»	Factory configured - do not alter	JP46	pins 1 & 2, 3 & 4 closed
»	Factory configured - do not alter	JP48	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) 1 M 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
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(8) 8K x 8	(2) 16K x 4
256KB	(8) 32K x 8	(2) 16K x 4

CACHE JUMPER CONFIGURATION
Size	JP4	JP5	JP6	JP20	JP21
64KB	Open	2 & 3	2 & 3	Open	Open
256KB	Closed	1 & 2	1 & 2	Closed	Closed
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	S1/3	S1/4	S1/5	S1/6
25MHz	On	Off	Off	Off
33MHz	On	Off	Open	On
40MHz	Off	On	Off	On