486U-PIO Motherboard Settings and Configuration

EFA CORPORATION

486U-PIO

Processor
CX486SX/UMC486SX/80486SX/SL80486SX/CX486SX2/UMC486SX2/ 80486SX2/SL80486SX2/CX486DX/UMC486DX/AM486DX/(SL)AM486DX/ 80486DX/SL80486DX/CX486DX2/UMC486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/SL80486DX2/P24D/AM486DX4/(SL)AM486DX4/80486DX4/ Pentium Overdrive/CXM1
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)/ 120(internal)MHz
Chip Set
UMC
Max. Onboard DRAM
128MB
Cache
128/256/512/1024KB
BIOS
Award
Dimensions
280mm x 220mm
I/O Options
32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Floppy drive interface
J1
Power LED & keylock
J8
Parallel port
J2
Speaker
J9
Serial port 1
J3
External battery
J10
Serial port 2
J4
Reset switch
J12
IDE interface 2
J5
Turbo switch
J13
IDE interface 1
J6
Turbo LED
J14
IDE interface LED
J7
32-bit PCI slots
PC1 - PC3

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
CMOS memory normal operation
JP1
Open

CMOS memory clear
JP1
Closed
»
Monitor type select color
JP2
Closed

Monitor type select monochrome
JP2
Open
»
Flash BIOS voltage select 5v
JP3
pins 1 & 2 closed

Flash BIOS voltage select 12v
JP3
pins 2 & 3 closed

PS/2 mouse IRQ12 enabled
JP4
Closed

PS/2 mouse IRQ12 disabled
JP4
Open

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
1MB
(1) 256K x 36
NONE
NONE
NONE
2MB
(1) 512K x 36
NONE
NONE
NONE
2MB
(1) 256K x 36
(1) 256K x 36
NONE
NONE
3MB
(1) 512K x 36
(1) 256K x 36
NONE
NONE
3MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
NONE
3MB
(1) 256K x 36
(1) 512K x 36
NONE
NONE
4MB
(1) 1M x 36
NONE
NONE
NONE
4MB
(1) 512K x 36
(1) 256K x 36
(1) 256K x 36
NONE
4MB
(1) 512K x 36
(1) 512K x 36
NONE
NONE
4MB
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
5MB
(1) 1M x 36
(1) 256K x 36
NONE
NONE
5MB
(1) 512K x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
5MB
(1) 256K x 36
(1) 512K x 36
(1) 512K x 36
NONE
5MB
(1) 256K x 36
(1) 1M x 36
NONE
NONE
6MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
NONE
6MB
(1) 1M x 36
(1) 512K x 36
NONE
NONE
6MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
NONE
6MB
(1) 512K x 36
(1) 1M x 36
NONE
NONE
7MB
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
7MB
(1) 256K x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
8MB
(1) 2M x 36
NONE
NONE
NONE
8MB
(1) 1M x 36
(1) 512K x 36
(1) 512K x 36
NONE

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
8MB
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
9MB
(1) 2M x 36
(1) 256K x 36
NONE
NONE
9MB
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
NONE
9MB
(1) 256K x 36
(1) 2M x 36
NONE
NONE
10MB
(1) 2M x 36
(1) 256K x 36
(1) 256K x 36
NONE
10MB
(1) 2M x 36
(1) 512K x 36
NONE
NONE
10MB
(1) 1M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
10MB
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
NONE
10MB
(1) 512K x 36
(1) 2M x 36
NONE
NONE
11MB
(1) 2M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
12MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
NONE
12MB
(1) 2M x 36
(1) 1M x 36
NONE
NONE
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
12MB
(1) 1M x 36
(1) 2M x 36
NONE
NONE
13MB
(1) 256K x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
14MB
(1) 2M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
14MB
(1) 512K x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
NONE
NONE
NONE
16MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
NONE
16MB
(1) 2M x 36
(1) 2M x 36
NONE
NONE
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
17MB
(1) 4M x 36
(1) 256K x 36
NONE
NONE
17MB
(1) 256K x 36
(1) 2M x 36
(1) 2M x 36
NONE
17MB
(1) 256K x 36
(1) 4M x 36
NONE
NONE
18MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
NONE
18MB
(1) 4M x 36
(1) 512K x 36
NONE
NONE
18MB
(1) 512K x 36
(1) 2M x 36
(1) 2M x 36
NONE
18MB
(1) 512K x 36
(1) 4M x 36
NONE
NONE
19MB
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
20MB
(1) 4M x 36
(1) 512K x 36
(1) 512K x 36
NONE
20MB
(1) 4M x 36
(1) 1M x 36
NONE
NONE
20MB
(1) 2M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
20MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
NONE
20MB
(1) 1M x 36
(1) 4M x 36
NONE
NONE
22MB
(1) 4M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
NONE
24MB
(1) 4M x 36
(1) 2M x 36
NONE
NONE
24MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
NONE
24MB
(1) 2M x 36
(1) 4M x 36
NONE
NONE
25MB
(1) 256K x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
26MB
(1) 512K x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
28MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
32MB
(1) 8M x 36
NONE
NONE
NONE
32MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
NONE
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
32MB
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
33MB
(1) 8M x 36
(1) 256K x 36
NONE
NONE
33MB
(1) 256K x 36
(1) 4M x 36
(1) 4M x 36
NONE
33MB
(1) 256K x 36
(1) 8M x 36
NONE
NONE
34MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
NONE
34MB
(1) 8M x 36
(1) 512K x 36
NONE
NONE
34MB
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
NONE
34MB
(1) 512K x 36
(1) 8M x 36
NONE
NONE
35MB
(1) 8M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
36MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
NONE
36MB
(1) 8M x 36
(1) 1M x 36
NONE
NONE
36MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
NONE
36MB
(1) 1M x 36
(1) 8M x 36
NONE
NONE
38MB
(1) 8M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
40MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
NONE
40MB
(1) 8M x 36
(1) 2M x 36
NONE
NONE
40MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
40MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
NONE
40MB
(1) 2M x 36
(1) 8M x 36
NONE
NONE
44MB
(1) 8M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
48MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
NONE
48MB
(1) 8M x 36
(1) 4M x 36
NONE
NONE
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
48MB
(1) 4M x 36
(1) 8M x 36
NONE
NONE
49MB
(1) 256K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
50MB
(1) 512K x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
52MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
56MB
(1) 8M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
56MB
(1) 2M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
64MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
NONE
64MB
(1) 8M x 36
(1) 8M x 36
NONE
NONE
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
65MB
(1) 256K x 36
(1) 8M x 36
(1) 8M x 36
NONE
66MB
(1) 512K x 36
(1) 8M x 36
(1) 8M x 36
NONE
68MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
NONE
72MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
NONE
80MB
(1) 8M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
80MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
NONE
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
NONE

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
97MB
(1) 256K x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
98MB
(1) 512K x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
100MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
104MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
112MB
(1) 4M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
128KB
(4) 32K x 8
NONE
(1) 32K x 8
256KB (A)
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
256KB (B)
(4) 64K x 8
NONE
(1) 32K x 8
512KB (A)
(4) 64K x 8
(4) 64K x 8
(1) 32K x 8
512KB (B)
(4) 128K x 8
NONE
(1) 32K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K or (1) 128K x 8

CACHE JUMPER CONFIGURATION
Size
JP12
JP13
JP14
128KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
256KB (A)
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
256KB (B)
pins 1 & 2 closed
pins 2 & 3 closed
pins 1 & 2 closed
512KB (A)
pins 2 & 3 closed
pins 2 & 3 closed
pins 4 & 5 closed
512KB (B)
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
1MB
pins 2 & 3 closed
pins 2 & 3 closed
pins 5 & 6 closed

CPU TYPE CONFIGURATION
Type
JP15
JP16
JP17
JP18
JP19
CX486SX
1 & 2
Open
2 & 3
1 & 2
2 & 3, 4 & 5
UMC486SX
Open
Open
1 & 2
2 & 3
Open
80486SX
Open
Open
1 & 2
1 & 2
Open
SL80486SX
Open
Open
1 & 2
1 & 2
3 & 4, 5 & 6
CX486SX2
1 & 2
Open
2 & 3
1 & 2
2 & 3, 4 & 5
UMC486SX2
Open
Open
1 & 2
2 & 3
Open
80486SX2
Open
Open
1 & 2
1 & 2
Open
SL80486SX2
Open
Open
1 & 2
1 & 2
3 & 4, 5 & 6
CX486DX
1 & 2
1 & 2
2 & 3
1 & 2
2 & 3, 4 & 5
UMC486DX
Open
1 & 2
1 & 2
2 & 3
Open
AM486DX
Open
1 & 2
1 & 2
2 & 3
1 & 2
(SL)AM486DX
2 & 3
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
80486DX
Open
1 & 2
1 & 2
1 & 2
Open
SL80486DX
Open
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
CX486DX2
1 & 2
1 & 2
2 & 3
1 & 2
2 & 3, 4 & 5
UMC486DX2
Open
1 & 2
1 & 2
2 & 3
Open

CPU TYPE CONFIGURATION (CON’T)
Type
JP15
JP16
JP17
JP18
JP19
AM486DX2
Open
1 & 2
1 & 2
2 & 3
1 & 2
(SL)AM486DX2
2 & 3
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
80486DX2
Open
1 & 2
1 & 2
1 & 2
Open
SL80486DX2
Open
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
P24D
2 & 3
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
AM486DX4
Open
1 & 2
1 & 2
2 & 3
Open
(SL)AM486DX4
2 & 3
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
80486DX4
Open
1 & 2
1 & 2
1 & 2
3 & 4, 5 & 6
P24T
2 & 3
2 & 3
1 & 2
1 & 2
3 & 4, 5 & 6
CXM1
2 & 3
1 & 2, 3 & 4
1 & 2
1 & 2
3 & 4, 5 & 6
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JP22
JP23
JP24
JP25
CX486SX
2 & 3, 4 & 5
2 & 3
1 & 2
Open
UMC486SX
Open
2 & 3
2 & 3
Open
80486SX
Open
2 & 3
2 & 3
Open
SL80486SX
5 & 6
2 & 3
1 & 2
Open
CX486SX2
2 & 3, 4 & 5
2 & 3
1 & 2
Open
UMC486SX2
Open
2 & 3
2 & 3
Open
80486SX2
Open
2 & 3
2 & 3
Open
SL80486SX2
5 & 6
2 & 3
1 & 2
Open
CX486DX
2 & 3, 4 & 5
1 & 2, 3 & 4
1 & 2
Open
UMC486DX
Open
1 & 2, 3 & 4
2 & 3
Open
AM486DX
Open
1 & 2, 3 & 4
2 & 3
Open
(SL)AM486DX
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
1 & 2
Open
80486DX
Open
1 & 2, 3 & 4
2 & 3
Open
SL80486DX
5 & 6
1 & 2, 3 & 4
1 & 2
Open
CX486DX2
2 & 3, 4 & 5
1 & 2, 3 & 4
1 & 2
Open
UMC486DX2
Open
1 & 2, 3 & 4
2 & 3
Open
AM486DX2
Open
1 & 2, 3 & 4
2 & 3
Open
(SL)AM486DX2
1 & 2, 3 & 4, 5 & 6
1 & 2, 3 & 4
1 & 2
Open
80486DX2
Open
1 & 2, 3 & 4
2 & 3
Open
SL80486DX2
5 & 6
1 & 2, 3 & 4
1 & 2
Open
P24D
3 & 4, 5 & 6
1 & 2, 3 & 4
1 & 2
Open
AM486DX4
Open
1 & 2, 3 & 4
2 & 3
Open
(SL)AM486DX4
3 & 4, 5 & 6
1 & 2, 3 & 4
1 & 2
Open
80486DX4
5 & 6
1 & 2, 3 & 4
1 & 2
Open
P24T
5 & 6
1 & 2, 3 & 4
1 & 2
Open
CXM1
3 & 4, 5 & 6
1 & 2, 3 & 4
1 & 2
Open
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
JP9
JP10
JP11
25MHz
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
33MHz
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
40MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
50iMHz
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
66iMHz
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
75iMHz
pins 2 & 3 closed
pins 1 & 2 closed
pins 2 & 3 closed
80iMHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
100iMHz
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed
120iMHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed

CPU VOLTAGE CONFIGURATION
Voltage
JP20
JP21
3.3v
pins 2 & 3, 4 & 5 closed
pins 1 & 2 closed
3.45v
pins 2 & 3, 4 & 5 closed
pins 2 & 3 closed
3.8v
pins 2 & 3, 4 & 5 closed
pins 4 & 5 closed
4v
pins 2 & 3, 4 & 5 closed
pins 5 & 6 closed
5v
pins 1 & 2 , 5 & 6 closed
pins 2 & 3 closed

DMA CONFIGURATION
» DMA
JP5
JP6
»
DMA 3
pins 2 & 3 closed
pins 2 & 3 closed
»
DMA 5
pins 1 & 2 closed
pins 1 & 2 closed

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Processor	CX486SX/UMC486SX/80486SX/SL80486SX/CX486SX2/UMC486SX2/ 80486SX2/SL80486SX2/CX486DX/UMC486DX/AM486DX/(SL)AM486DX/ 80486DX/SL80486DX/CX486DX2/UMC486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/SL80486DX2/P24D/AM486DX4/(SL)AM486DX4/80486DX4/ Pentium Overdrive/CXM1
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)/ 120(internal)MHz
Chip Set	UMC
Max. Onboard DRAM	128MB
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	280mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	J1	Power LED & keylock	J8
Parallel port	J2	Speaker	J9
Serial port 1	J3	External battery	J10
Serial port 2	J4	Reset switch	J12
IDE interface 2	J5	Turbo switch	J13
IDE interface 1	J6	Turbo LED	J14
IDE interface LED	J7	32-bit PCI slots	PC1 - PC3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CMOS memory normal operation	JP1	Open
	CMOS memory clear	JP1	Closed
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open
»	Flash BIOS voltage select 5v	JP3	pins 1 & 2 closed
	Flash BIOS voltage select 12v	JP3	pins 2 & 3 closed
	PS/2 mouse IRQ12 enabled	JP4	Closed
	PS/2 mouse IRQ12 disabled	JP4	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(1) 256K x 36	NONE	NONE	NONE
2MB	(1) 512K x 36	NONE	NONE	NONE
2MB	(1) 256K x 36	(1) 256K x 36	NONE	NONE
3MB	(1) 512K x 36	(1) 256K x 36	NONE	NONE
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	NONE
3MB	(1) 256K x 36	(1) 512K x 36	NONE	NONE
4MB	(1) 1M x 36	NONE	NONE	NONE
4MB	(1) 512K x 36	(1) 256K x 36	(1) 256K x 36	NONE
4MB	(1) 512K x 36	(1) 512K x 36	NONE	NONE
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
5MB	(1) 1M x 36	(1) 256K x 36	NONE	NONE
5MB	(1) 512K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
5MB	(1) 256K x 36	(1) 512K x 36	(1) 512K x 36	NONE
5MB	(1) 256K x 36	(1) 1M x 36	NONE	NONE
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	NONE
6MB	(1) 1M x 36	(1) 512K x 36	NONE	NONE
6MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	NONE
6MB	(1) 512K x 36	(1) 1M x 36	NONE	NONE
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
7MB	(1) 256K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
8MB	(1) 2M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36	NONE

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
9MB	(1) 2M x 36	(1) 256K x 36	NONE	NONE
9MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	NONE
9MB	(1) 256K x 36	(1) 2M x 36	NONE	NONE
10MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	NONE
10MB	(1) 2M x 36	(1) 512K x 36	NONE	NONE
10MB	(1) 1M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
10MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	NONE
10MB	(1) 512K x 36	(1) 2M x 36	NONE	NONE
11MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	NONE
12MB	(1) 2M x 36	(1) 1M x 36	NONE	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
12MB	(1) 1M x 36	(1) 2M x 36	NONE	NONE
13MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
14MB	(1) 2M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
14MB	(1) 512K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	NONE
16MB	(1) 2M x 36	(1) 2M x 36	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
17MB	(1) 4M x 36	(1) 256K x 36	NONE	NONE
17MB	(1) 256K x 36	(1) 2M x 36	(1) 2M x 36	NONE
17MB	(1) 256K x 36	(1) 4M x 36	NONE	NONE
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	NONE
18MB	(1) 4M x 36	(1) 512K x 36	NONE	NONE
18MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	NONE
18MB	(1) 512K x 36	(1) 4M x 36	NONE	NONE
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 512K x 36	(1) 512K x 36	NONE
20MB	(1) 4M x 36	(1) 1M x 36	NONE	NONE
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
22MB	(1) 4M x 36	(1) 512K x 36	(1) 512K x 36	(1) 512K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
24MB	(1) 4M x 36	(1) 2M x 36	NONE	NONE
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	NONE
24MB	(1) 2M x 36	(1) 4M x 36	NONE	NONE
25MB	(1) 256K x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
26MB	(1) 512K x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 32K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	NONE	(1) 32K x 8
512KB (A)	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
512KB (B)	(4) 128K x 8	NONE	(1) 32K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K or (1) 128K x 8

CACHE JUMPER CONFIGURATION
Size	JP12	JP13	JP14
128KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
256KB (A)	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
256KB (B)	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 2 closed
512KB (A)	pins 2 & 3 closed	pins 2 & 3 closed	pins 4 & 5 closed
512KB (B)	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
1MB	pins 2 & 3 closed	pins 2 & 3 closed	pins 5 & 6 closed

CPU TYPE CONFIGURATION
Type	JP15	JP16	JP17	JP18	JP19
CX486SX	1 & 2	Open	2 & 3	1 & 2	2 & 3, 4 & 5
UMC486SX	Open	Open	1 & 2	2 & 3	Open
80486SX	Open	Open	1 & 2	1 & 2	Open
SL80486SX	Open	Open	1 & 2	1 & 2	3 & 4, 5 & 6
CX486SX2	1 & 2	Open	2 & 3	1 & 2	2 & 3, 4 & 5
UMC486SX2	Open	Open	1 & 2	2 & 3	Open
80486SX2	Open	Open	1 & 2	1 & 2	Open
SL80486SX2	Open	Open	1 & 2	1 & 2	3 & 4, 5 & 6
CX486DX	1 & 2	1 & 2	2 & 3	1 & 2	2 & 3, 4 & 5
UMC486DX	Open	1 & 2	1 & 2	2 & 3	Open
AM486DX	Open	1 & 2	1 & 2	2 & 3	1 & 2
(SL)AM486DX	2 & 3	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
80486DX	Open	1 & 2	1 & 2	1 & 2	Open
SL80486DX	Open	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
CX486DX2	1 & 2	1 & 2	2 & 3	1 & 2	2 & 3, 4 & 5
UMC486DX2	Open	1 & 2	1 & 2	2 & 3	Open

CPU TYPE CONFIGURATION (CON’T)
Type	JP15	JP16	JP17	JP18	JP19
AM486DX2	Open	1 & 2	1 & 2	2 & 3	1 & 2
(SL)AM486DX2	2 & 3	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
80486DX2	Open	1 & 2	1 & 2	1 & 2	Open
SL80486DX2	Open	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
P24D	2 & 3	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
AM486DX4	Open	1 & 2	1 & 2	2 & 3	Open
(SL)AM486DX4	2 & 3	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
80486DX4	Open	1 & 2	1 & 2	1 & 2	3 & 4, 5 & 6
P24T	2 & 3	2 & 3	1 & 2	1 & 2	3 & 4, 5 & 6
CXM1	2 & 3	1 & 2, 3 & 4	1 & 2	1 & 2	3 & 4, 5 & 6
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JP22	JP23	JP24	JP25
CX486SX	2 & 3, 4 & 5	2 & 3	1 & 2	Open
UMC486SX	Open	2 & 3	2 & 3	Open
80486SX	Open	2 & 3	2 & 3	Open
SL80486SX	5 & 6	2 & 3	1 & 2	Open
CX486SX2	2 & 3, 4 & 5	2 & 3	1 & 2	Open
UMC486SX2	Open	2 & 3	2 & 3	Open
80486SX2	Open	2 & 3	2 & 3	Open
SL80486SX2	5 & 6	2 & 3	1 & 2	Open
CX486DX	2 & 3, 4 & 5	1 & 2, 3 & 4	1 & 2	Open
UMC486DX	Open	1 & 2, 3 & 4	2 & 3	Open
AM486DX	Open	1 & 2, 3 & 4	2 & 3	Open
(SL)AM486DX	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4	1 & 2	Open
80486DX	Open	1 & 2, 3 & 4	2 & 3	Open
SL80486DX	5 & 6	1 & 2, 3 & 4	1 & 2	Open
CX486DX2	2 & 3, 4 & 5	1 & 2, 3 & 4	1 & 2	Open
UMC486DX2	Open	1 & 2, 3 & 4	2 & 3	Open
AM486DX2	Open	1 & 2, 3 & 4	2 & 3	Open
(SL)AM486DX2	1 & 2, 3 & 4, 5 & 6	1 & 2, 3 & 4	1 & 2	Open
80486DX2	Open	1 & 2, 3 & 4	2 & 3	Open
SL80486DX2	5 & 6	1 & 2, 3 & 4	1 & 2	Open
P24D	3 & 4, 5 & 6	1 & 2, 3 & 4	1 & 2	Open
AM486DX4	Open	1 & 2, 3 & 4	2 & 3	Open
(SL)AM486DX4	3 & 4, 5 & 6	1 & 2, 3 & 4	1 & 2	Open
80486DX4	5 & 6	1 & 2, 3 & 4	1 & 2	Open
P24T	5 & 6	1 & 2, 3 & 4	1 & 2	Open
CXM1	3 & 4, 5 & 6	1 & 2, 3 & 4	1 & 2	Open
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JP9	JP10	JP11
25MHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
33MHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
40MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
50iMHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
66iMHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
75iMHz	pins 2 & 3 closed	pins 1 & 2 closed	pins 2 & 3 closed
80iMHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
100iMHz	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed
120iMHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed

CPU VOLTAGE CONFIGURATION
Voltage	JP20	JP21
3.3v	pins 2 & 3, 4 & 5 closed	pins 1 & 2 closed
3.45v	pins 2 & 3, 4 & 5 closed	pins 2 & 3 closed
3.8v	pins 2 & 3, 4 & 5 closed	pins 4 & 5 closed
4v	pins 2 & 3, 4 & 5 closed	pins 5 & 6 closed
5v	pins 1 & 2 , 5 & 6 closed	pins 2 & 3 closed

DMA CONFIGURATION
» DMA		JP5	JP6
»	DMA 3	pins 2 & 3 closed	pins 2 & 3 closed
»	DMA 5	pins 1 & 2 closed	pins 1 & 2 closed