UM4980 Motherboard Settings and Configuration

ELITEGROUP COMPUTER SYSTEMS, INC.

UM4980

Processor
CX486S/SL80486SX/80486SX/SL80486SX2/80486SX2/AM486DXL/AM486DX/CX486DX/UMCU5S/AM486DXL/SL80486DX/80486DX/AM486DX2/CX486DX2/ SL80486DX2/80486DX2/80486DX4
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set
UMC
Max. Onboard DRAM
64MB
Cache
128/256/512/1024KB
BIOS
Phoenix
Dimensions
254mm x 218mm
I/O Options
32-bit VESA local bus slots (3), green PC connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J2
Reset switch
J30
Green PC connector
J27
Turbo switch
J31
Turbo LED
J28
Power LED & keylock
J32
Speaker
J29
32-bit VESA local bus slots
SL1 - SL3

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
BIOS type select EPROM
JP1
Open

BIOS type select 5v flash
JP1
pins 1 & 2 closed

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

Keyboard type select internal
JP3
Closed

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
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
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
Bank 1
TAG
128KB
(4) 32K x 8
NONE
(1) 8K x 8
256KB
(4) 64K x 8
NONE
(1) 32K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
512KB
(4) 64K x 8
(4) 64K x 8
(1) 32K x 8
512KB
(4) 128K x 8
NONE
(1) 32K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K 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
256KB
2 & 3
2 & 3
Open
Open
Open
Open
Closed
512KB
2 & 3
2 & 3
2 & 3
Open
Closed
Open
Closed
512KB
1 & 2
2 & 3
2 & 3
1 & 2
Closed
Open
Closed
1MB
2 & 3
2 & 3
2 & 3
2 & 3
Closed
Closed
Closed
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type
JP14
JP15
JP16
CX486S
pins 2 & 3, 4 & 5 closed
2 & 3
Open
SL80486SX
pins 1 & 2, 3 & 4 closed
2 & 3
Open
80486SX
Open
pins 2 & 3 closed
Open
SL80486SX2
pins 1 & 2, 3 & 4 closed
2 & 3
Open
80486SX2
Open
pins 2 & 3 closed
Open
AM486DXL
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
AM486DX
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
CX486DX
pins 2 & 3 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
UMC U5S
Open
pins 2 & 3 closed
pins 3 & 4 closed
AM486DXL2
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
SL80486DX
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
80486DX
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
AM486DX2
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
CX486DX2
pins 2 & 3 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
SL80486DX2
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
80486DX2
Open
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
80486DX2 (WB)
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed
80486DX4
pins 1 & 2, 3 & 4 closed
pins 1 & 2, 3 & 4 closed
pins 1 & 2 closed

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
SL80486SX
5 & 6
1 & 2
1 & 2
80486SX
Open
2 & 3
Open
SL80486SX2
5 & 6
1 & 2
1 & 2
80486SX2
Open
2 & 3
Open
AM486DXL
1 & 2
2 & 3
2 & 3
AM486DX
Open
2 & 3
Open
CX486DX
2 & 3, 4 & 5
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
UMC U5S
1 & 2
2 & 3
2 & 3
AM486DXL2
1 & 2
2 & 3
2 & 3
SL80486DX
5 & 6
1 & 2
1 & 2
80486DX
Open
2 & 3
Open
AM486DX2
Open
2 & 3
Open
CX486DX2
2 & 3, 4 & 5
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
SL80486DX2
5 & 6
1 & 2
1 & 2
80486DX2
Open
2 & 3
Open
80486DX2 (WB)
3 & 4, 5 & 6
1 & 2, 4 & 5
1 & 2, 4 & 5
80486DX4
5 & 6
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

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 VOLTAGE CONFIGURATION
Voltage
JP20
JP21
JP22
3.3v
pins 2 & 3 closed
pins 2 & 3 closed
pins 2 & 3 closed
3.45v
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
5v
pins 1 & 2 closed
pins 1 & 2 closed
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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Processor	CX486S/SL80486SX/80486SX/SL80486SX2/80486SX2/AM486DXL/AM486DX/CX486DX/UMCU5S/AM486DXL/SL80486DX/80486DX/AM486DX2/CX486DX2/ SL80486DX2/80486DX2/80486DX4
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	64MB
Cache	128/256/512/1024KB
BIOS	Phoenix
Dimensions	254mm x 218mm
I/O Options	32-bit VESA local bus slots (3), green PC connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J2	Reset switch	J30
Green PC connector	J27	Turbo switch	J31
Turbo LED	J28	Power LED & keylock	J32
Speaker	J29	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	BIOS type select EPROM	JP1	Open
	BIOS type select 5v flash	JP1	pins 1 & 2 closed
	BIOS type select 12v flash	JP1	pins 2 & 3 closed
»	Keyboard type select external	JP3	Open
	Keyboard type select internal	JP3	Closed

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
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
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	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 8K x 8
256KB	(4) 64K x 8	NONE	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
512KB	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
512KB	(4) 128K x 8	NONE	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K 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
256KB	2 & 3	2 & 3	Open	Open	Open	Open	Closed
512KB	2 & 3	2 & 3	2 & 3	Open	Closed	Open	Closed
512KB	1 & 2	2 & 3	2 & 3	1 & 2	Closed	Open	Closed
1MB	2 & 3	2 & 3	2 & 3	2 & 3	Closed	Closed	Closed
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP14	JP15	JP16
CX486S	pins 2 & 3, 4 & 5 closed	2 & 3	Open
SL80486SX	pins 1 & 2, 3 & 4 closed	2 & 3	Open
80486SX	Open	pins 2 & 3 closed	Open
SL80486SX2	pins 1 & 2, 3 & 4 closed	2 & 3	Open
80486SX2	Open	pins 2 & 3 closed	Open
AM486DXL	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed
AM486DX	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
CX486DX	pins 2 & 3 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
UMC U5S	Open	pins 2 & 3 closed	pins 3 & 4 closed
AM486DXL2	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed
SL80486DX	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
AM486DX2	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
CX486DX2	pins 2 & 3 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
SL80486DX2	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX2	Open	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX2 (WB)	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2, 3 & 4 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed

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
SL80486SX	5 & 6	1 & 2	1 & 2
80486SX	Open	2 & 3	Open
SL80486SX2	5 & 6	1 & 2	1 & 2
80486SX2	Open	2 & 3	Open
AM486DXL	1 & 2	2 & 3	2 & 3
AM486DX	Open	2 & 3	Open
CX486DX	2 & 3, 4 & 5	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4
UMC U5S	1 & 2	2 & 3	2 & 3
AM486DXL2	1 & 2	2 & 3	2 & 3
SL80486DX	5 & 6	1 & 2	1 & 2
80486DX	Open	2 & 3	Open
AM486DX2	Open	2 & 3	Open
CX486DX2	2 & 3, 4 & 5	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4
SL80486DX2	5 & 6	1 & 2	1 & 2
80486DX2	Open	2 & 3	Open
80486DX2 (WB)	3 & 4, 5 & 6	1 & 2, 4 & 5	1 & 2, 4 & 5
80486DX4	5 & 6	1 & 2	1 & 2
Note: Pins designated should be in the closed position.

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 VOLTAGE CONFIGURATION
Voltage	JP20	JP21	JP22
3.3v	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed
3.45v	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
5v	pins 1 & 2 closed	pins 1 & 2 closed	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