SUPER 486 REV: D2 Motherboard Settings and Configuration

PRECISION AMERICA, INC.

SUPER 486 REV: D2

Processor
80486SX/80486DX
Processor Speed
20/25/33MHz
Chip Set
Unidentified
Max. Onboard DRAM
32MB
Cache
64/128/256/1024KB
BIOS
AM/MR/Phoenix
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
JP1
Turbo switch
JP10
Reset switch
JP2
Turbo LED
JP11
Power LED & keylock
JP5

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Factory configured - do not alter
JP3
Pins 2 & 3 closed
»
Monitor type select monochrome/EGA
JP6
Open

Monitor type select color
JP6
Closed

CPU frequency select 1x
JP27
Closed

CPU frequency select 2x
JP27
Open

Wait state select 0 wait states
JP32
Closed

Wait state select 1 wait state
JP32
Open
»
Factory configured - do not alter
JP33
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
5MB
(4) 1M x 9
(4) 256K 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
17MB
(4) 4M x 9
(4) 256K 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

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
64KB
(4) 8K x 8
(4) 8K x 8
(1) 8K x 8
128KB
(4) 32K x 8
None
(1) 32K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 128K x 8

CACHE JUMPER CONFIGURATION
Size
JP22
JP23
JP24
JP25
JP26
64KB
1 & 2
1 & 2
1 & 2
1 & 2
Open
128KB
2 & 3
1 & 2
1 & 2
1 & 2
Closed
256KB
2 & 3
2 & 3
1 & 2
1 & 2
Open
1MB
2 & 3
2 & 3
2 & 3
2 & 3
Open
Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)
Size
JP28
JP34
JP35
JP36
JP37
64KB
Closed
1 & 2
2 & 3
2 & 3
2 & 3
128KB
Open
Open
1 & 2
1 & 2
1 & 2
256KB
Closed
2 & 3
2 & 3
2 & 3
2 & 3
1MB
Closed
2 & 3
2 & 3
2 & 3
2 & 3
Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)
Size
JP38
JP39
JP40
JP41
JP42
64KB
Open
2 & 3
2 & 3
Open
2 & 3
128KB
Closed
Open
1 & 2
Closed
2 & 3
256KB
Open
2 & 3
2 & 3
Open
2 & 3
1MB
Open
2 & 3
2 & 3
Open
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
J12
JP13
JP14
80486SX
Open
Pins 2 & 3 closed
Open
80486DX
Closed
Pins 1 & 2 closed
Closed

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SUPER 486 REV: D2 Motherboard Settings and Configuration

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Processor	80486SX/80486DX
Processor Speed	20/25/33MHz
Chip Set	Unidentified
Max. Onboard DRAM	32MB
Cache	64/128/256/1024KB
BIOS	AM/MR/Phoenix
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	JP1	Turbo switch	JP10
Reset switch	JP2	Turbo LED	JP11
Power LED & keylock	JP5

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP3	Pins 2 & 3 closed
»	Monitor type select monochrome/EGA	JP6	Open
	Monitor type select color	JP6	Closed
	CPU frequency select 1x	JP27	Closed
	CPU frequency select 2x	JP27	Open
	Wait state select 0 wait states	JP32	Closed
	Wait state select 1 wait state	JP32	Open
»	Factory configured - do not alter	JP33	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
5MB	(4) 1M x 9	(4) 256K 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
17MB	(4) 4M x 9	(4) 256K 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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	None	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 128K x 8

CACHE JUMPER CONFIGURATION
Size	JP22	JP23	JP24	JP25	JP26
64KB	1 & 2	1 & 2	1 & 2	1 & 2	Open
128KB	2 & 3	1 & 2	1 & 2	1 & 2	Closed
256KB	2 & 3	2 & 3	1 & 2	1 & 2	Open
1MB	2 & 3	2 & 3	2 & 3	2 & 3	Open
Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)
Size	JP28	JP34	JP35	JP36	JP37
64KB	Closed	1 & 2	2 & 3	2 & 3	2 & 3
128KB	Open	Open	1 & 2	1 & 2	1 & 2
256KB	Closed	2 & 3	2 & 3	2 & 3	2 & 3
1MB	Closed	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION (CON’T)
Size	JP38	JP39	JP40	JP41	JP42
64KB	Open	2 & 3	2 & 3	Open	2 & 3
128KB	Closed	Open	1 & 2	Closed	2 & 3
256KB	Open	2 & 3	2 & 3	Open	2 & 3
1MB	Open	2 & 3	2 & 3	Open	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	J12	JP13	JP14
80486SX	Open	Pins 2 & 3 closed	Open
80486DX	Closed	Pins 1 & 2 closed	Closed