AP41 Motherboard Settings and Configuration

ACER, INC.

AP41

Processor
AM486SX/80486SX/SL80486SX/AM486DX/CX486DX/80486DX/SL80486DX/ AM486DX2/CX486DX2/TI486DX2/80486DX2/80486DX2/SL80486DX2/ AM486DX4/CX486DX4/80486DX4/P24D/P24T/CX5X86
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set
SIS
Max. Onboard DRAM
128MB
Cache
128/256/512KB
BIOS
AMI
Dimensions
254mm x 218mm
I/O Options
Parallel port, serial ports (2), 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 1
CN1
IDE interface 1
CN6
Serial port 2
CN2
Floppy drive interface
CN7
Parallel port
CN3
IDE interface LED
JP6
IDE interface 2
CN4
Green PC connector
JP9
Power LED & keylock
CN5 pins 1 - 5
External battery
JP35
Speaker
CN5 pins 7 - 10
Chassis fan power
JP43
Turbo LED
CN5 pins 12 - 13
Chassis fan power
JP46
Turbo switch
CN5 pins 15 - 17
32-bit PCI slots
PC1 - PC3
Reset switch
CN5 pins 19 - 20

USER CONFIGURABLE SETTINGS
Function
Jumper
Position

On board I/O enabled
JP1
pins 1 & 2 closed

On board I/O disabled
JP1
pins 2 & 3 closed

BIOS type select 12v flash ROM
JP4
pins 1 & 2 closed

BIOS type select 5v EEPROM or flash ROM
JP4
pins 2 & 3 closed

CMOS memory normal operation
JP37
pins 1 & 2 closed

CMOS memory clear
JP37
pins 2 & 3 closed

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) 512K 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
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) 512K x 36
(1) 2M x 36
(1) 2M x 36
NONE
18MB
(1) 512K 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
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
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
28MB
(1) 1M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
32MB
(1) 8M x 36
NONE
NONE
NONE
32MB
(1) 4M x 36
(1) 2M x 36
(1) 2M x 36
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
64MB
(1) 16M x 36
NONE
NONE
NONE
65MB
(1) 16M x 36
(1) 256K x 36
NONE
NONE
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
66MB
(1) 16M x 36
(1) 256K x 36
(1) 256K x 36
NONE
66MB
(1) 16M x 36
(1) 512K x 36
NONE
NONE
67MB
(1) 16M x 36
(1) 256K x 36
(1) 256K x 36
(1) 256K x 36
68MB
(1) 1M x 36
(1) 8M x 36
(1) 8M x 36
NONE

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
68MB
(1) 16M x 36
(1) 512K x 36
(1) 512K x 36
NONE
68MB
(1) 16M x 36
(1) 1M x 36
NONE
NONE
70MB
(1) 16M x 36
(1) 512K x 36
(1) 512K x 36
(1) 512K x 36
72MB
(1) 2M x 36
(1) 8M x 36
(1) 8M x 36
NONE
72MB
(1) 16M x 36
(1) 1M x 36
(1) 1M x 36
NONE
72MB
(1) 16M x 36
(1) 2M x 36
NONE
NONE
76MB
(1) 16M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
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
80MB
(1) 16M x 36
(1) 2M x 36
(1) 2M x 36
NONE
80MB
(1) 16M x 36
(1) 4M x 36
NONE
NONE
88MB
(1) 16M x 36
(1) 2M x 36
(1) 2M x 36
(1) 2M x 36
96MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
NONE
96MB
(1) 16M x 36
(1) 4M x 36
(1) 4M x 36
NONE
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
112MB
(1) 16M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
128MB
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
(1) 8M x 36
128MB
(1) 16M x 36
(1) 16M x 36
NONE
NONE

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
128KB
(4) 32K x 8
NONE
(1) 16K x 8 or (1) 32K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 16K x 8 or (1) 32K x 8
256KB
(4) 64K x 8
NONE
(1) 16K x 8 or (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

CACHE JUMPER CONFIGURATION
Size
JP24
JP25
JP26
JP27
JP29
128KB
1 & 2
1 & 2
2 & 3
1 & 2
1 & 2, 3 & 4
256KB
1 & 2
2 & 3
2 & 3
2 & 3
2 & 3, 4 & 5
256KB
1 & 2
2 & 3
1 & 2
1 & 2
1 & 2, 3 & 4
512KB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3, 4 & 5
512KB
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY)
Type
JP11
JP12
JP13
JP14
JP15
AM486SX
2 & 3
Open
Open
Open
Open
80486SX
2 & 3
Open
Open
Open
Open
SL80486SX
2 & 3
1 & 2
Open
Open
Open
AM486DX
2 & 3
Open
Open
Open
Open
CX486DX
2 & 3
1 & 2
Open
Open
Open
80486DX
2 & 3
Open
Open
Open
Open
SL80486DX
2 & 3
1 & 2
Open
Open
Open
AM486DX2
2 & 3
Open
Open
Open
Open
CX486DX2
2 & 3
1 & 2
Open
Open
Open
80486DX2
2 & 3
Open
Open
Open
Open
SL80486DX2
2 & 3
1 & 2
Open
Open
Open
P24D
1 & 2
1 & 2
Open
1 & 2
1 & 2
P24T
1 & 2
1 & 2
1 & 2
Open
Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY, CON’T)
Type
JP16
JP17
JP18
JP19
JP20
AM486SX
Open
Open
2 & 3
Open
Open
80486SX
Open
Open
2 & 3
Open
Open
SL80486SX
Open
3 & 4
2 & 3
Open
Open
AM486DX
Open
Open
1 & 2, 3 & 4
Open
3 & 4
CX486DX
2 & 3
2 & 3
1 & 2, 3 & 4
2 & 3
3 & 4
80486DX
Open
Open
1 & 2, 3 & 4
Open
3 & 4
SL80486DX
Open
3 & 4
1 & 2, 3 & 4
Open
Open
AM486DX2
Open
Open
1 & 2, 3 & 4
Open
3 & 4
CX486DX2
2 & 3
2 & 3
1 & 2, 3 & 4
2 & 3
3 & 4
80486DX2
Open
Open
1 & 2, 3 & 4
Open
3 & 4
SL80486DX2
Open
3 & 4
1 & 2, 3 & 4
Open
Open
P24D
1 & 2
1 & 2, 3 & 4
1 & 2, 3 & 4
Open
3 & 4
P24T
1 & 2
3 & 4
1 & 2, 3 & 4
1 & 2
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY, CON’T)
Type
JP21
JP22
JP23
JP40
AM486SX
Open
Open
Open
pins 1 & 3, 2 & 4 closed
80486SX
Open
Open
Open
pins 1 & 3, 2 & 4 closed
SL80486SX
pins 4 & 5 closed
pins 1 & 2 closed
pins 2 & 3 closed
pins 1 & 3, 2 & 4 closed
AM486DX
Open
Open
Open
pins 1 & 3, 2 & 4 closed
CX486DX
pins 2 & 3 closed
Open
pins 1 & 2 closed
pins 1 & 3, 2 & 4 closed
80486DX
Open
Open
Open
pins 1 & 3, 2 & 4 closed
SL80486DX
pins 4 & 5 closed
pins 1 & 2 closed
pins 2 & 3 closed
pins 1 & 3, 2 & 4 closed
AM486DX2
Open
Open
Open
pins 1 & 3, 2 & 4 closed
CX486DX2
pins 2 & 3 closed
Open
pins 1 & 2 closed
pins 1 & 3, 2 & 4 closed
80486DX2
Open
Open
Open
pins 1 & 3, 2 & 4 closed
SL80486DX2
pins 4 & 5 closed
pins 1 & 2 closed
pins 2 & 3 closed
pins 1 & 3, 2 & 4 closed
P24D
pins 4 & 5 closed
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 3, 2 & 4 closed
P24T
pins 1 & 2 closed
Open
pins 2 & 3 closed
pins 1 & 3, 2 & 4 closed

CPU TYPE CONFIGURATION (3.45 VOLT ONLY)
Type
JP11
JP12
JP13
JP14
JP15
AM486DX2
2 & 3
Open
Open
2 & 3
Open
CX486DX2
2 & 3
1 & 2
Open
Open
Open
TI486DX2
2 & 3
1 & 2
Open
Open
Open
AM486DX4
2 & 3
Open
Open
Open
Open
AM486DX4 (SV8B)
1 & 2
1 & 2
Open
1 & 2
1 & 2
AM486DX4 (SV8T)
2 & 3
1 & 2
Open
Open
Open
CX486DX4
2 & 3
1 & 2
Open
1 & 2
1 & 2
CX486DX4 (M7)
2 & 3
1 & 2
Open
Open
Open
80486dx4 (wb)
1 & 2
1 & 2
Open
1 & 2
1 & 2
80486dx4 (wT)
2 & 3
1 & 2
Open
Open
Open
CX5X86
2 & 3
1 & 2
Open
1 & 2
1 & 2
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (3.45 VOLT ONLY, CON’T)
Type
JP16
JP17
JP18
JP19
JP20
AM486DX2
Open
Open
1 & 2, 3 & 4
Open
3 & 4
CX486DX2
2 & 3
2 & 3
1 & 2, 3 & 4
2 & 3
3 & 4
TI486DX2
2 & 3
2 & 3
1 & 2, 3 & 4
2 & 3
3 & 4
AM486DX4
Open
Open
1 & 2, 3 & 4
Open
3 & 4
AM486DX4 (SV8B)
1 & 2
1 & 2, 3 & 4
1 & 2, 3 & 4
Open
3 & 4
AM486DX4 (SV8T)
Open
3 & 4
1 & 2, 3 & 4
Open
3 & 4
CX486DX4
1 & 2
1 & 2, 3 & 4
1 & 2, 3 & 4
Open
3 & 4
CX486DX4 (M7)
2 & 3
2 & 3
1 & 2, 3 & 4
2 & 3
3 & 4
80486dx4 (wb)
1 & 2
1 & 2, 3 & 4
1 & 2, 3 & 4
Open
3 & 4
80486dx4 (wT)
Open
3 & 4
1 & 2, 3 & 4
Open
3 & 4
CX5X86
1 & 2
1 & 2, 3 & 4
1 & 2, 3 & 4
Open
3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (3.45 VOLT ONLY, CON’T)
Type
JP21
JP22
JP23
JP40
AM486DX2
Open
Open
Open
3 & 5, 4 & 6
CX486DX2
2 & 3
Open
1 & 2
3 & 5, 4 & 6
TI486DX2
2 & 3
Open
1 & 2
3 & 5, 4 & 6
AM486DX4
Open
Open
Open
3 & 5, 4 & 6
AM486DX4 (SV8B)
4 & 5
2 & 3
2 & 3
3 & 5, 4 & 6
AM486DX4 (SV8T)
4 & 5
1 & 2
2 & 3
3 & 5, 4 & 6
CX486DX4
4 & 5
2 & 3
2 & 3
3 & 5, 4 & 6
CX486DX4 (M7)
2 & 3
Open
1 & 2
3 & 5, 4 & 6
80486dx4 (wb)
4 & 5
2 & 3
2 & 3
3 & 5, 4 & 6
80486dx4 (wT)
4 & 5
1 & 2
2 & 3
3 & 5, 4 & 6
CX5X86
4 & 5
2 & 3
2 & 3
3 & 5, 4 & 6
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
JP30
JP31
JP32
25MHz
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
33MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
40MHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 2 & 3 closed
50iMHz
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
66iMHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
75iMHz
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
100iMHz
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed

DMA CONFIGURATION
DMA
JP2
JP3
DMA 1
pins 2 & 3 closed
pins 2 & 3 closed
DMA 3
pins 1 & 2 closed
pins 1 & 2 closed

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Processor	AM486SX/80486SX/SL80486SX/AM486DX/CX486DX/80486DX/SL80486DX/ AM486DX2/CX486DX2/TI486DX2/80486DX2/80486DX2/SL80486DX2/ AM486DX4/CX486DX4/80486DX4/P24D/P24T/CX5X86
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	SIS
Max. Onboard DRAM	128MB
Cache	128/256/512KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	Parallel port, serial ports (2), 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	IDE interface 1	CN6
Serial port 2	CN2	Floppy drive interface	CN7
Parallel port	CN3	IDE interface LED	JP6
IDE interface 2	CN4	Green PC connector	JP9
Power LED & keylock	CN5 pins 1 - 5	External battery	JP35
Speaker	CN5 pins 7 - 10	Chassis fan power	JP43
Turbo LED	CN5 pins 12 - 13	Chassis fan power	JP46
Turbo switch	CN5 pins 15 - 17	32-bit PCI slots	PC1 - PC3
Reset switch	CN5 pins 19 - 20

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
	On board I/O enabled	JP1	pins 1 & 2 closed
	On board I/O disabled	JP1	pins 2 & 3 closed
	BIOS type select 12v flash ROM	JP4	pins 1 & 2 closed
	BIOS type select 5v EEPROM or flash ROM	JP4	pins 2 & 3 closed
	CMOS memory normal operation	JP37	pins 1 & 2 closed
	CMOS memory clear	JP37	pins 2 & 3 closed

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) 512K 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
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) 512K x 36	(1) 2M x 36	(1) 2M x 36	NONE
18MB	(1) 512K 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
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
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
28MB	(1) 1M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	NONE	(1) 16K x 8 or (1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 16K x 8 or (1) 32K x 8
256KB	(4) 64K x 8	NONE	(1) 16K x 8 or (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

CACHE JUMPER CONFIGURATION
Size	JP24	JP25	JP26	JP27	JP29
128KB	1 & 2	1 & 2	2 & 3	1 & 2	1 & 2, 3 & 4
256KB	1 & 2	2 & 3	2 & 3	2 & 3	2 & 3, 4 & 5
256KB	1 & 2	2 & 3	1 & 2	1 & 2	1 & 2, 3 & 4
512KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3, 4 & 5
512KB	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2, 3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY)
Type	JP11	JP12	JP13	JP14	JP15
AM486SX	2 & 3	Open	Open	Open	Open
80486SX	2 & 3	Open	Open	Open	Open
SL80486SX	2 & 3	1 & 2	Open	Open	Open
AM486DX	2 & 3	Open	Open	Open	Open
CX486DX	2 & 3	1 & 2	Open	Open	Open
80486DX	2 & 3	Open	Open	Open	Open
SL80486DX	2 & 3	1 & 2	Open	Open	Open
AM486DX2	2 & 3	Open	Open	Open	Open
CX486DX2	2 & 3	1 & 2	Open	Open	Open
80486DX2	2 & 3	Open	Open	Open	Open
SL80486DX2	2 & 3	1 & 2	Open	Open	Open
P24D	1 & 2	1 & 2	Open	1 & 2	1 & 2
P24T	1 & 2	1 & 2	1 & 2	Open	Open
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY, CON’T)
Type	JP16	JP17	JP18	JP19	JP20
AM486SX	Open	Open	2 & 3	Open	Open
80486SX	Open	Open	2 & 3	Open	Open
SL80486SX	Open	3 & 4	2 & 3	Open	Open
AM486DX	Open	Open	1 & 2, 3 & 4	Open	3 & 4
CX486DX	2 & 3	2 & 3	1 & 2, 3 & 4	2 & 3	3 & 4
80486DX	Open	Open	1 & 2, 3 & 4	Open	3 & 4
SL80486DX	Open	3 & 4	1 & 2, 3 & 4	Open	Open
AM486DX2	Open	Open	1 & 2, 3 & 4	Open	3 & 4
CX486DX2	2 & 3	2 & 3	1 & 2, 3 & 4	2 & 3	3 & 4
80486DX2	Open	Open	1 & 2, 3 & 4	Open	3 & 4
SL80486DX2	Open	3 & 4	1 & 2, 3 & 4	Open	Open
P24D	1 & 2	1 & 2, 3 & 4	1 & 2, 3 & 4	Open	3 & 4
P24T	1 & 2	3 & 4	1 & 2, 3 & 4	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (5 VOLT ONLY, CON’T)
Type	JP21	JP22	JP23	JP40
AM486SX	Open	Open	Open	pins 1 & 3, 2 & 4 closed
80486SX	Open	Open	Open	pins 1 & 3, 2 & 4 closed
SL80486SX	pins 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed
AM486DX	Open	Open	Open	pins 1 & 3, 2 & 4 closed
CX486DX	pins 2 & 3 closed	Open	pins 1 & 2 closed	pins 1 & 3, 2 & 4 closed
80486DX	Open	Open	Open	pins 1 & 3, 2 & 4 closed
SL80486DX	pins 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed
AM486DX2	Open	Open	Open	pins 1 & 3, 2 & 4 closed
CX486DX2	pins 2 & 3 closed	Open	pins 1 & 2 closed	pins 1 & 3, 2 & 4 closed
80486DX2	Open	Open	Open	pins 1 & 3, 2 & 4 closed
SL80486DX2	pins 4 & 5 closed	pins 1 & 2 closed	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed
P24D	pins 4 & 5 closed	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed
P24T	pins 1 & 2 closed	Open	pins 2 & 3 closed	pins 1 & 3, 2 & 4 closed

CPU SPEED CONFIGURATION
Speed	JP30	JP31	JP32
25MHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
33MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
40MHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 2 & 3 closed
50iMHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
66iMHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
75iMHz	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
100iMHz	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed

DMA CONFIGURATION
DMA	JP2	JP3
DMA 1	pins 2 & 3 closed	pins 2 & 3 closed
DMA 3	pins 1 & 2 closed	pins 1 & 2 closed