PCI486 AL2 Motherboard Settings and Configuration

COMPUTREND SYSTEMS, INC.

PCI486 AL2

Processor
UMC486SX/80486SX/SL80486SX/UMC486DX/AM486DX/80486DX/ SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/P24T
Processor Speed
25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz
Chip Set
ALI
Max. Onboard DRAM
64MB
Cache
128/256/512KB
BIOS
AMI
Dimensions
270mm x 220mm
I/O Options
32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 1
CN1
Turbo LED
JFP pins 12 & 13
Serial port 2
CN2
Turbo switch
JFP pins 15 - 17
Parallel port
CN3
Reset switch
JFP pins 19 & 20
Floppy drive interface
CN4
IDE interface LED
JFPA
IDE interface 2
CN5
Chassis fan power
JFAN
IDE interface 1
CN6
Green PC connector (monitor)
JG1
External battery
JB1
Green PC LED
JG2
Power LED & keylock
JFP pins 1 - 5
Green PC connector
JG3
Speaker
JFP pins 7 - 10
32-bit PCI slots
PC1 - PC3
Note: The location of JFAN is unidentified.

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Battery type select internal
JB1
Pins 2 & 3 closed

Battery type select external
JB1
Closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(1) 1M x 36
None
None
None
8MB
(1) 1M x 36
(1) 1M x 36
None
None
20MB
(1) 1M x 36
(1) 4M x 36
None
None
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
None
24MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
None
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
28MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
16MB
(1) 4M x 36
None
None
None
32MB
(1) 4M x 36
(1) 4M x 36
None
None
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
None
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/16K/32 x 8
256KB (A)
(4) 32K x 8
(4) 32K x 8
(1) 16K/32K x 8
256KB (B)
(4) 64K x 8
None
(1) 16K/32K x 8
512KB
(4) 128K x 8
None
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
128KB
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 2 & 3 closed
256KB (A)
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
256KB (B)
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
512KB
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type
JC1
JC2
JC3
JC4
UMC486SX
2 & 3
2 & 3
Open
1 & 2
80486SX
Open
2 & 3
Open
Open
SL80486SX
Open
2 & 3
Open
2 & 3
UMC486DX
2 & 3
1 & 2, 3 & 4
Open
1 & 2
AM486DX
2 & 3
1 & 2, 3 & 4
Open
Open
80486DX
2 & 3
1 & 2, 3 & 4
Open
Open
SL80486DX
2 & 3
1 & 2, 3 & 4
Open
2 & 3
CX486DX2
2 & 3
1 & 2, 3 & 4
4 & 5
4 & 5
AM486DX2 (V8B)
2 & 3
1 & 2, 3 & 4
1 & 2 5 & 6
2 & 3
AM486DX2 (V8T)
2 & 3
1 & 2, 3 & 4
Open
Open
AM486DX2
2 & 3
1 & 2, 3 & 4
Open
Open
80486DX2
2 & 3
1 & 2, 3 & 4
Open
Open
SL80486DX2
2 & 3
1 & 2, 3 & 4
Open
2 & 3
SL80486DX2 (OD)
1 & 2
1 & 2, 3 & 4
Open
2 & 3
AM486DX4 (V8B)
2 & 3
1 & 2, 3 & 4
1 & 2 5 & 6
2 & 3
AM486DX4 (V8T)
2 & 3
1 & 2, 3 & 4
Open
Open
80486DX4
2 & 3
1 & 2, 3 & 4
Open
2 & 3
P24D
2 & 3
1 & 2, 3 & 4
1 & 2
2 & 3
P24T
2 & 3
1 & 2, 3 & 4
1 & 2
2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type
JC5
JC6
JC7
JC8
JC9
UMC486SX
1 & 2
1 & 2
1 & 2
Closed
Open
80486SX
1 & 2
Open
1 & 2
Open
Open
SL80486SX
2 & 3
2 & 3
1 & 2
Closed
Open
UMC486DX
1 & 2
1 & 2
1 & 2
Closed
Open
AM486DX
1 & 2
Open
1 & 2
Open
Open
80486DX
1 & 2
Open
1 & 2
Open
Open
SL80486DX
2 & 3
2 & 3
1 & 2
Closed
Open
CX486DX2
4 & 5
4 & 5
1 & 2
Closed
Open
AM486DX2 (V8B)
2 & 3
2 & 3
2 & 3, 4 & 5
Closed
Open
AM486DX2 (V8T)
1 & 2
Open
1 & 2
Open
Open
AM486DX2
1 & 2
Open
1 & 2
Open
Open
80486DX2
1 & 2
Open
1 & 2
Open
Open
SL80486DX2
2 & 3
2 & 3
1 & 2
Closed
Open
SL80486DX2 (OD)
2 & 3
2 & 3
1 & 2
Closed
Open
AM486DX4 (V8B)
2 & 3
2 & 3
2 & 3, 4 & 5
Closed
Open
AM486DX4 (V8T)
1 & 2
Open
1 & 2
Open
Open
80486DX4
2 & 3
2 & 3
1 & 2
Closed
Open
P24D
2 & 3
2 & 3
2 & 3, 4 & 5
Closed
Open
P24T
2 & 3
2 & 3
2 & 3, 4 & 5
Closed
Open
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
JK1
JK2
JK3
25MHz
Open
Pins 2 & 3 closed
Open
33MHz
Pins 1 & 2, 3 & 4 closed
Pins 2 & 3 closed
Open
40MHz
Pins 1 & 2 closed
Pins 1 & 2 closed
Closed
50iMHz
Open
Pins 2 & 3 closed
Open
66iMHz
Pins 1 & 2, 3 & 4 closed
Pins 2 & 3 closed
Open
75iMHz
Open
Pins 2 & 3 closed
Open
80iMHz
Pins 1 & 2 closed
Pins 1 & 2 closed
Closed
100iMHz
Pins 1 & 2, 3 & 4 closed
Pins 2 & 3 closed
Open

CPU VOLTAGE CONFIGURATION
Voltage
J4
JP8

3.45v
Pins 4 & 10, 5 & 11, 6 & 12 closed
Open

4v
Pins 4 & 10, 5 & 11, 6 & 12 closed
Closed
»
5v
Pins 1 & 7, 2 & 8, 3 & 9 closed
Open

DMA CONFIGURATION
DMA
JP17
JP18
JP23
JP24
DMA 1
Closed
Closed
Open
Open
DMA 3
Open
Open
Closed
Closed

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PCI486 AL2 Motherboard Settings and Configuration

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Processor	UMC486SX/80486SX/SL80486SX/UMC486DX/AM486DX/80486DX/ SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/P24T
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz
Chip Set	ALI
Max. Onboard DRAM	64MB
Cache	128/256/512KB
BIOS	AMI
Dimensions	270mm x 220mm
I/O Options	32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Turbo LED	JFP pins 12 & 13
Serial port 2	CN2	Turbo switch	JFP pins 15 - 17
Parallel port	CN3	Reset switch	JFP pins 19 & 20
Floppy drive interface	CN4	IDE interface LED	JFPA
IDE interface 2	CN5	Chassis fan power	JFAN
IDE interface 1	CN6	Green PC connector (monitor)	JG1
External battery	JB1	Green PC LED	JG2
Power LED & keylock	JFP pins 1 - 5	Green PC connector	JG3
Speaker	JFP pins 7 - 10	32-bit PCI slots	PC1 - PC3
Note: The location of JFAN is unidentified.

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery type select internal	JB1	Pins 2 & 3 closed
	Battery type select external	JB1	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	None	None	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
20MB	(1) 1M x 36	(1) 4M x 36	None	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
28MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36
16MB	(1) 4M x 36	None	None	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	None
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/16K/32 x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 16K/32K x 8
256KB (B)	(4) 64K x 8	None	(1) 16K/32K x 8
512KB	(4) 128K x 8	None	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3
128KB	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
256KB (A)	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
256KB (B)	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
512KB	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE CONFIGURATION
Type	JC1	JC2	JC3	JC4
UMC486SX	2 & 3	2 & 3	Open	1 & 2
80486SX	Open	2 & 3	Open	Open
SL80486SX	Open	2 & 3	Open	2 & 3
UMC486DX	2 & 3	1 & 2, 3 & 4	Open	1 & 2
AM486DX	2 & 3	1 & 2, 3 & 4	Open	Open
80486DX	2 & 3	1 & 2, 3 & 4	Open	Open
SL80486DX	2 & 3	1 & 2, 3 & 4	Open	2 & 3
CX486DX2	2 & 3	1 & 2, 3 & 4	4 & 5	4 & 5
AM486DX2 (V8B)	2 & 3	1 & 2, 3 & 4	1 & 2 5 & 6	2 & 3
AM486DX2 (V8T)	2 & 3	1 & 2, 3 & 4	Open	Open
AM486DX2	2 & 3	1 & 2, 3 & 4	Open	Open
80486DX2	2 & 3	1 & 2, 3 & 4	Open	Open
SL80486DX2	2 & 3	1 & 2, 3 & 4	Open	2 & 3
SL80486DX2 (OD)	1 & 2	1 & 2, 3 & 4	Open	2 & 3
AM486DX4 (V8B)	2 & 3	1 & 2, 3 & 4	1 & 2 5 & 6	2 & 3
AM486DX4 (V8T)	2 & 3	1 & 2, 3 & 4	Open	Open
80486DX4	2 & 3	1 & 2, 3 & 4	Open	2 & 3
P24D	2 & 3	1 & 2, 3 & 4	1 & 2	2 & 3
P24T	2 & 3	1 & 2, 3 & 4	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	JC5	JC6	JC7	JC8	JC9
UMC486SX	1 & 2	1 & 2	1 & 2	Closed	Open
80486SX	1 & 2	Open	1 & 2	Open	Open
SL80486SX	2 & 3	2 & 3	1 & 2	Closed	Open
UMC486DX	1 & 2	1 & 2	1 & 2	Closed	Open
AM486DX	1 & 2	Open	1 & 2	Open	Open
80486DX	1 & 2	Open	1 & 2	Open	Open
SL80486DX	2 & 3	2 & 3	1 & 2	Closed	Open
CX486DX2	4 & 5	4 & 5	1 & 2	Closed	Open
AM486DX2 (V8B)	2 & 3	2 & 3	2 & 3, 4 & 5	Closed	Open
AM486DX2 (V8T)	1 & 2	Open	1 & 2	Open	Open
AM486DX2	1 & 2	Open	1 & 2	Open	Open
80486DX2	1 & 2	Open	1 & 2	Open	Open
SL80486DX2	2 & 3	2 & 3	1 & 2	Closed	Open
SL80486DX2 (OD)	2 & 3	2 & 3	1 & 2	Closed	Open
AM486DX4 (V8B)	2 & 3	2 & 3	2 & 3, 4 & 5	Closed	Open
AM486DX4 (V8T)	1 & 2	Open	1 & 2	Open	Open
80486DX4	2 & 3	2 & 3	1 & 2	Closed	Open
P24D	2 & 3	2 & 3	2 & 3, 4 & 5	Closed	Open
P24T	2 & 3	2 & 3	2 & 3, 4 & 5	Closed	Open
Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	JK1	JK2	JK3
25MHz	Open	Pins 2 & 3 closed	Open
33MHz	Pins 1 & 2, 3 & 4 closed	Pins 2 & 3 closed	Open
40MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Closed
50iMHz	Open	Pins 2 & 3 closed	Open
66iMHz	Pins 1 & 2, 3 & 4 closed	Pins 2 & 3 closed	Open
75iMHz	Open	Pins 2 & 3 closed	Open
80iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Closed
100iMHz	Pins 1 & 2, 3 & 4 closed	Pins 2 & 3 closed	Open

CPU VOLTAGE CONFIGURATION
Voltage		J4	JP8
	3.45v	Pins 4 & 10, 5 & 11, 6 & 12 closed	Open
	4v	Pins 4 & 10, 5 & 11, 6 & 12 closed	Closed
»	5v	Pins 1 & 7, 2 & 8, 3 & 9 closed	Open

DMA CONFIGURATION
DMA	JP17	JP18	JP23	JP24
DMA 1	Closed	Closed	Open	Open
DMA 3	Open	Open	Closed	Closed