UA4982 Motherboard Settings and Configuration

ELITEGROUP COMPUTER SYSTEMS, INC.

UA4982

Processor
CX486S/80486SX/SL80486SX/SL80486SX/80486SX2/CX486DX/U5S/ AM486DX/SL80486DX/80486DX/CX486DX2/AK486DX2/80486DX2/ SL80486DX2/P24D/AM486DX4/80486DX4
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
UMC
Max. Onboard DRAM
64MB
Cache
128/256/512KB
BIOS
Phoenix
Dimensions
254mm x 218mm
I/O Options
32-bit VESA local bus slots (2), green PC connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J2
Reset switch
J90 pins 9 - 10
Turbo LED
J90 pins 2 - 3
Power LED & keylock
J90 pins 11 - 15
Green PC connector
J90 pins 4 - 5
Speaker
J90 pins 17 - 20
Turbo switch
J90 pins 6 - 7
32-bit VESA local bus slots
SL1 - SL3

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Flash BIOS voltage select 5v
JP1
pins 1 & 2 closed

Flash BIOS voltage select 12v
JP1
pins 2 & 3 closed
»
Keyboard type select external
JP3
Open

Keyboard type select internal
JP3
Closed
»
Factory configured - do not alter
JP20
N/A
»
Factory configured - do not alter
JP21
N/A
»
Factory configured - do not alter
JP22
N/A

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
1MB
(1) 256K x 36
NONE
NONE
NONE
2MB
(1) 256K x 36
(1) 256K x 36
NONE
NONE
2MB
NONE
NONE
NONE
(1) 512K x 36
3MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
NONE
4MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
4MB
NONE
NONE
(1) 512K x 36
(1) 512K x 36
4MB
(1) 1M x 36
NONE
NONE
NONE
5MB
(1) 1M x 36
(1) 256K x 36
NONE
NONE
6MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
NONE
7MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
8MB
NONE
NONE
NONE
(1) 2M x 36
9MB
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
NONE
10MB
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
13MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
NONE
NONE
(1) 2M x 36
(1) 2M x 36
16MB
(1) 4M x 36
NONE
NONE
NONE
17MB
(1) 4M x 36
(1) 256K x 36
NONE
NONE
18MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
NONE
19MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
20MB
(1) 4M x 36
(1) 1M x 36
NONE
NONE
21MB
(1) 4M x 36
(1) 1M x 36
(1) 256K x 36
NONE
22MB
(1) 4M x 36
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
NONE
25MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
33MB
(1) 4M x 36
(1) 4M x 36
(1) 256K x 36
NONE
34MB
(1) 4M x 36
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
36MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
NONE
37MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
(1) 256K x 36
40MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
49MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 256K x 36
52MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36

CACHE CONFIGURATION
Size
Bank 0
TAG
128KB
(4) 32K x 8
(1) 32K x 8
256KB
(4) 64K x 8
(1) 32K x 8
512KB
(4) 128K x 8
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JP4
JP5
JP6
JP10
JP11
JP12
JP13
128KB
1 & 2
1 & 2
Open
Open
Open
Open
Open
256KB
1 & 2
1 & 2
1 & 2
Open
Open
Open
Closed
512KB
1 & 2
2 & 3
2 & 3
1 & 2
Closed
Open
Closed
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP14
JP15
JP16
CX486S
2 & 3, 4 & 5
2 & 3
Open
80486SX
Open
2 & 3
Open
SL80486SX
1 & 2, 3 & 4
2 & 3
Open
80486SX2
Open
2 & 3
Open
SL80486SX2
1 & 2, 3 & 4
2 & 3
Open
CX486DX
2 & 3
1 & 2, 3 & 4
1 & 2
U5S
Open
2 & 3
3 & 4
AM486DX
Open
1 & 2, 3 & 4
1 & 2
SL80486DX
1 & 2, 3 & 4
1 & 2, 3 & 4
1 & 2
80486DX
Open
1 & 2, 3 & 4
1 & 2
CX486DX2
2 & 3
1 & 2, 3 & 4
1 & 2
AM486DX2
Open
1 & 2, 3 & 4
1 & 2
80486DX2
Open
1 & 2, 3 & 4
1 & 2
SL80486DX2
1 & 2, 3 & 4
1 & 2, 3 & 4
1 & 2
P24D
1 & 2, 3 & 4
1 & 2, 3 & 4
1 & 2
AM486DX4
Open
1 & 2, 3 & 4
1 & 2
80486DX4
1 & 2, 3 & 4
1 & 2, 3 & 4
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP17
JP18
JP19
CX486S
2 & 3, 4 & 5
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4, 5 & 6
80486SX
Open
2 & 3
Open
SL80486SX
5 & 6
1 & 2
1 & 2
80486SX2
Open
2 & 3
Open
SL80486SX2
5 & 6
1 & 2
1 & 2
CX486DX
2 & 3, 4 & 5
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
U5S
1 & 2
2 & 3
2 & 3
AM486DX
Open
2 & 3
Open
SL80486DX
5 & 6
1 & 2
1 & 2
80486DX
Open
2 & 3
Open
CX486DX2
2 & 3, 4 & 5
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
AM486DX2
Open
2 & 3
Open
80486DX2
Open
2 & 3
Open
SL80486DX2
5 & 6
1 & 2
1 & 2
P24D
3 & 4, 5 & 6
1 & 2, 4 & 5
1 & 2, 4 & 5
AM486DX4
Open
2 & 3
Open
80486DX4
5 & 6
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP100
JP101
JP102
JP103
Cyrix
Closed
Closed
Closed
Closed
Intel/AMD
Open
Open
Open
Open

CPU SPEED CONFIGURATION
Speed
JP7
JP8
JP9
25MHz
Closed
Open
Open
33MHz
Closed
Closed
Closed
40MHz
Closed
Closed
Open
50iMHz
Closed
Open
Open
50MHz
Open
Open
Closed
66iMHz
Closed
Closed
Closed
75iMHz
Closed
Open
Open
100iMHz
Closed
Closed
Closed

CPU SPEED CONFIGURATION (80486DX4 ONLY)
Speed
JP24
2x
pins 2 & 3 closed
3x
Open

CPU SPEED CONFIGURATION (AM486DX4 ONLY)
Speed
JP400
2x
Closed
3x
Open

VESA WAIT STATE CONFIGURATION
Wait states
JP26
0 wait states
Open
1 wait state
Closed

BUS SPEED CONFIGURATION
CPU speed
JP25
<= 33MHz
Open
> 33MHz
Closed

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UA4982 Motherboard Settings and Configuration

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Processor	CX486S/80486SX/SL80486SX/SL80486SX/80486SX2/CX486DX/U5S/ AM486DX/SL80486DX/80486DX/CX486DX2/AK486DX2/80486DX2/ SL80486DX2/P24D/AM486DX4/80486DX4
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	64MB
Cache	128/256/512KB
BIOS	Phoenix
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (2), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Reset switch	J90 pins 9 - 10
Turbo LED	J90 pins 2 - 3	Power LED & keylock	J90 pins 11 - 15
Green PC connector	J90 pins 4 - 5	Speaker	J90 pins 17 - 20
Turbo switch	J90 pins 6 - 7	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Flash BIOS voltage select 5v	JP1	pins 1 & 2 closed
	Flash BIOS voltage select 12v	JP1	pins 2 & 3 closed
»	Keyboard type select external	JP3	Open
	Keyboard type select internal	JP3	Closed
»	Factory configured - do not alter	JP20	N/A
»	Factory configured - do not alter	JP21	N/A
»	Factory configured - do not alter	JP22	N/A

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(1) 256K x 36	NONE	NONE	NONE
2MB	(1) 256K x 36	(1) 256K x 36	NONE	NONE
2MB	NONE	NONE	NONE	(1) 512K x 36
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
4MB	NONE	NONE	(1) 512K x 36	(1) 512K x 36
4MB	(1) 1M x 36	NONE	NONE	NONE
5MB	(1) 1M x 36	(1) 256K x 36	NONE	NONE
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	NONE
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	NONE	NONE	NONE	(1) 2M x 36
9MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
13MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	NONE	NONE	(1) 2M x 36	(1) 2M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
17MB	(1) 4M x 36	(1) 256K x 36	NONE	NONE
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	NONE
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
21MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	NONE
22MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
25MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
33MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	NONE
34MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
37MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
49MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

CACHE CONFIGURATION
Size	Bank 0	TAG
128KB	(4) 32K x 8	(1) 32K x 8
256KB	(4) 64K x 8	(1) 32K x 8
512KB	(4) 128K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP4	JP5	JP6	JP10	JP11	JP12	JP13
128KB	1 & 2	1 & 2	Open	Open	Open	Open	Open
256KB	1 & 2	1 & 2	1 & 2	Open	Open	Open	Closed
512KB	1 & 2	2 & 3	2 & 3	1 & 2	Closed	Open	Closed
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP14	JP15	JP16
CX486S	2 & 3, 4 & 5	2 & 3	Open
80486SX	Open	2 & 3	Open
SL80486SX	1 & 2, 3 & 4	2 & 3	Open
80486SX2	Open	2 & 3	Open
SL80486SX2	1 & 2, 3 & 4	2 & 3	Open
CX486DX	2 & 3	1 & 2, 3 & 4	1 & 2
U5S	Open	2 & 3	3 & 4
AM486DX	Open	1 & 2, 3 & 4	1 & 2
SL80486DX	1 & 2, 3 & 4	1 & 2, 3 & 4	1 & 2
80486DX	Open	1 & 2, 3 & 4	1 & 2
CX486DX2	2 & 3	1 & 2, 3 & 4	1 & 2
AM486DX2	Open	1 & 2, 3 & 4	1 & 2
80486DX2	Open	1 & 2, 3 & 4	1 & 2
SL80486DX2	1 & 2, 3 & 4	1 & 2, 3 & 4	1 & 2
P24D	1 & 2, 3 & 4	1 & 2, 3 & 4	1 & 2
AM486DX4	Open	1 & 2, 3 & 4	1 & 2
80486DX4	1 & 2, 3 & 4	1 & 2, 3 & 4	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP17	JP18	JP19
CX486S	2 & 3, 4 & 5	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4, 5 & 6
80486SX	Open	2 & 3	Open
SL80486SX	5 & 6	1 & 2	1 & 2
80486SX2	Open	2 & 3	Open
SL80486SX2	5 & 6	1 & 2	1 & 2
CX486DX	2 & 3, 4 & 5	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4
U5S	1 & 2	2 & 3	2 & 3
AM486DX	Open	2 & 3	Open
SL80486DX	5 & 6	1 & 2	1 & 2
80486DX	Open	2 & 3	Open
CX486DX2	2 & 3, 4 & 5	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4
AM486DX2	Open	2 & 3	Open
80486DX2	Open	2 & 3	Open
SL80486DX2	5 & 6	1 & 2	1 & 2
P24D	3 & 4, 5 & 6	1 & 2, 4 & 5	1 & 2, 4 & 5
AM486DX4	Open	2 & 3	Open
80486DX4	5 & 6	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP100	JP101	JP102	JP103
Cyrix	Closed	Closed	Closed	Closed
Intel/AMD	Open	Open	Open	Open

CPU SPEED CONFIGURATION
Speed	JP7	JP8	JP9
25MHz	Closed	Open	Open
33MHz	Closed	Closed	Closed
40MHz	Closed	Closed	Open
50iMHz	Closed	Open	Open
50MHz	Open	Open	Closed
66iMHz	Closed	Closed	Closed
75iMHz	Closed	Open	Open
100iMHz	Closed	Closed	Closed

CPU SPEED CONFIGURATION (80486DX4 ONLY)
Speed	JP24
2x	pins 2 & 3 closed
3x	Open

CPU SPEED CONFIGURATION (AM486DX4 ONLY)
Speed	JP400
2x	Closed
3x	Open

VESA WAIT STATE CONFIGURATION
Wait states	JP26
0 wait states	Open
1 wait state	Closed

BUS SPEED CONFIGURATION
CPU speed	JP25
<= 33MHz	Open
> 33MHz	Closed