LPM30 (REV. 3A) Motherboard Settings and Configuration

Processor	80486SX/SL80486SX/CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/ AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4/ Pentium Overdrive
Processor Speed	25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Chip Set	Micronics
Max. Onboard DRAM	128MB
Cache	128/256KB
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	Riser card slot, floppy drive interface, game port, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, LAN connector, modem port, audio connector, microphone input, line level input, line level output, speaker port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Modem connector	CN1	Turbo switch	J23
Parallel port	CN2	Reset switch	J24
LAN connector	CN3	IDE interface LED	J36
Floppy drive interface	CN4	PS/2 mouse port	S1
IDE interface (secondary)	CN5	Serial port 1	S2
IDE interface (primary)	CN6	Game port	S3

CONNECTIONS (CON’T)
Purpose	Location	Purpose	Location
Serial port 2	CN7	Microphone input	S4
Audio connector	CN8	Line level input	S5
VGA Feature connector	CN9	Line level output	S6
Power LED & keylock	J19	Speaker port	S7
Speaker connector	J20	VGA port	S8
Power module connector	J21	Riser card slot	SL1 & SL2
Turbo LED	J22

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	W1	Closed
	Monitor type select monochrome	W1	Open
»	Game port enabled	W2	Closed
	Game port disabled	W2	Open
»	On-board sound address select 240h	W3	pins 1 & 2 closed
	On-board sound address select 220h	W3	pins 2 & 3 closed
»	On-board sound enabled	W4	Open
	On-board sound disabled	W4	Closed
»	IRQ select IRQ5	W5	pins 2 & 3 closed
	IRQ select IRQ7	W5	pins 1 & 2 closed
»	On-board sound IRQ select IRQ5	W7	pins 1 & 2 closed
	On-board sound IRQ select IRQ9	W7	pins 2 & 3 closed
»	On-board I/O enabled	W11	Open
	On-board I/O disabled	W11	Closed
»	Factory configured - do not alter	W13	pins 1 & 2 closed
»	On-board VGA enabled	W14	Open
	On-board VGA disabled	W14	Closed
»	RAMDAC enabled	W15	Open
	RAMDAC disabled/feature enabled	W15	Closed
»	Factory configured - do not alter	W17	Open
»	Flash BIOS normal mode	W18	Open
	Flash BIOS programing mode	W18	Closed
»	Factory configured - do not alter	W19	pins 1 & 2, 3 & 4 closed
»	Buzzer enabled	W20	Closed
	Buzzer disabled	W20	Open
»	DRAM select standard 5v	W21	Open
	DRAM select micron 12v	W21	Closed
»	CMOS memory normal operation	W25	pins 1 & 2 closed
	CMOS memory clear	W25	pins 2 & 3 closed
»	IDE interface enabled	W28	pins 1 & 2 closed
	IDE interface disabled	W28	pins 2 & 3 closed
»	Factory configured - do not alter	W29	pins 2 & 3 closed
Note: The location of W17 is unidentified.

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
16MB	(1) 1M 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) 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) 2M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 8M x 36	NONE	NONE	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
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) 2M x 36	(1) 2M x 36
48MB	(1) 4M 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
72MB	(1) 8M x 36	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36
80MB	(1) 8M x 36	(1) 8M 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) 8M x 36	(1) 8M 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

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

CACHE JUMPER CONFIGURATION
Size	W39	W42
128KB	pins 1 & 2, 3 & 4 closed	Open
256KB	pins 2 & 3, 4 & 5 closed	Closed

CPU TYPE CONFIGURATION
Type	W22	W23	W30	W31	W32
80486SX	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
SL80486SX	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
CX486DX	1 & 2	2 & 3	1 & 2, 3 & 4	1 & 2	2 & 3
AM486DX	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
80486DX	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
SL80486DX	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
CX486DX2	1 & 2	2 & 3	1 & 2, 3 & 4	1 & 2	2 & 3
AM486DX2	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
80486DX2	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
80486DX2(WB)	1 & 2	1 & 2	1 & 2, 3 & 4	2 & 3	1 & 2
SL80486DX2	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
AM486DXL4	2 & 3	1 & 2	1 & 2, 3 & 4	Open	2 & 3
80486DX4	2 & 3	1 & 2	1 & 2, 3 & 4	2 & 3	2 & 3
Pentium Overdrive	1 & 2	1 & 2	1 & 2, 3 & 4	2 & 3	1 & 2
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	W33	W34	W35	W38	W40
80486SX	Open	Open	Open	3 & 4	4 & 5
SL80486SX	Open	Open	1 & 2	3 & 4	4 & 5
CX486DX	Open	1 & 2	Open	3 & 4	2 & 3
AM486DX	Open	Open	Open	1 & 2, 3 & 4	4 & 5
80486DX	Open	Open	Open	3 & 4	4 & 5
SL80486DX	Open	Open	1 & 2	3 & 4	4 & 5
CX486DX2	Open	1 & 2	Open	3 & 4	2 & 3
AM486DX2	Open	Open	Open	1 & 2, 3 & 4	4 & 5
80486DX2	Open	Open	Open	3 & 4	4 & 5
80486DX2(WB)	Closed	1 & 2	2 & 3	3 & 4	4 & 5
SL80486DX2	Open	Open	1 & 2	3 & 4	4 & 5
AM486DXL4	Open	2 & 3	Open	1 & 2, 3 & 4	4 & 5
80486DX4	Open	Open	Open	3 & 4	4 & 5
Pentium Overdrive	Open	Open	Open	2 & 3	1 & 2
Note: Pins designated should be in closed position.

CPU TYPE CONFIGURATION (CON’T)
Type	W41	W43	W44	W45
80486SX	3 & 4	1 & 2	Open	Open
SL80486SX	3 & 4	1 & 2	Open	Open
CX486DX	2 & 3	2 & 3	Open	Open
AM486DX	Open	1 & 2	Closed	1 & 2
80486DX	3 & 4	1 & 2	Open	Open
SL80486DX	3 & 4	1 & 2	Open	Open
CX486DX2	2 & 3	2 & 3	Open	Open
AM486DX2	Open	1 & 2	Closed	1 & 2
80486DX2	3 & 4	1 & 2	Open	Open
80486DX2(WB)	1 & 2, 3 & 4	1 & 2	Open	Open
SL80486DX2	3 & 4	1 & 2	Open	Open
AM486DXL4	Open	1 & 2	Closed	Open
80486DX4	3 & 4	1 & 2	Open	Open
Pentium Overdrive	3 & 4	1 & 2	Open	Open
Note: Pins designated should be in closed position.

CPU SPEED CONFIGURATION
Speed	W26	W27
25MHz	Open	Open
33MHz	Open	Closed
40MHz	Closed	Open
50iMHz	Open	Open
66iMHz	Open	Closed
75iMHz	Open	Open
100iMHz	Open	Closed

DMA CONFIGURATION
DMA	W6	W10
None	Open	Open
DMA1	pins 1 & 2 closed	pins 1 & 2 closed
DMA3	pins 2 & 3 closed	pins 2 & 3 closed

DRQ CONFIGURATION
DRQ	W8	W9
None	pins 2 & 3 closed	pins 2 & 3 closed
DRQ0	pins 1 & 2 closed	pins 2 & 3 closed
DRQ1	pins 2 & 3 closed	pins 1 & 2 closed
DRQ3	pins 1 & 2 closed	pins 1 & 2 closed

VRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(2) 256K x 16	NONE
2MB	(2) 256K x 16	(2) 256K x 16
Note: Bank 0 is factory installed and is not configurable.