Micronics MotherBoard: LPM30

Micronics Part #: 09-00232-xx

· LPX form factor system board.

· Micronics' X30 chipset with an on-chip external level 2 cache controller.

· One VL slot built onto the system board. Slot will accommodate a riser card which supports up to one VESA and four ISA peripheral cards.

· On-board VESA Local bus video adapter, using the 64-bit ATI mach64 graphics accelerator with 1MB of VRAM (2MB optional).

· On-board 16-bit sound controller.

· On-board feature connectors accept:

· 14,400 Fax modem module (optional)

· Ethernet network adapter module (optional)

· 3.3V and 4.0V power modules for low voltage CPU's

· Accepts up to 256K of external cache.

· On-board Local bus IDE controller.

· Floppy controller (supports 2.88MB, 1.44MB, 1.2MB, 720K, and 360K floppy drive).

· Two high speed 16550 compatible serial ports.

· Bi-directional parallel port which is EPP and ECP compatible.

· Battery-backed real-time clock.

· Supports the following processors in the CPU ZIF socket:

· 486SX2, 50MHz

· 486DX, 33MHz

· 486DX2, 50 or 66MHz

· 486DX4, 75 or 100 MHz

· Cyrix DX2/80 or DX/40

· AMD DX40, DX2/80, or DX4/100


CPU Voltage

CPU                     Manufacture(s) Voltage     

486SX                   Intel, AMD    5.0V        
486DX                   Intel, AMD    5.0V        
486DX2                  Intel         5.0V        
486DX2                  AMD           3.3V or 5.0V        
486SL-series            Intel         5.0V        

Write-Back Enhanced     Intel         5.0V        
486DX2                                            
486DX4                  Intel, AMD    3.3V        
Pentium Overdrive       Intel         5.0V        
Cyrix 486DX/DX2         Cyrix         5.0V        
Cyrix 486DX2V-80        Cyrix         4.0V        



Jumper Settings:

CPU             W22        W23       W30       W31       W32       W33       W34       

486SX           2-3        1-2       2-3       2-3       2-3       open      open      
486DX/DX2       2-3        1-2       1-2       2-3       2-3       open      open      
486SL-series    2-3        1-2       1-2       2-3       2-3       open      open      
                                     3-4                                               
Intel           1-2        1-2       1-2       2-3       1-2       close     1-2       
Write-Back                           3-4                                               
Enhanced                                                                               
486DX2                                                                                 
486DX4          2-3        1-2       1-2       2-3       2-3       open      open      
                                     3-4                                               
Pentium         1-2        1-2       1-2       2-3       1-2       open      open      
Overdrive                            3-4                                               

AMD 486DX/DX2   2-3        1-2       1-2       2-3       2-3       open      open      
                                     3-4                                               
AMD DXL4        2-3        1-2       1-2       open      2-3       open      2-3       
                                     3-4                                               
Cyrix           1-2        2-3       1-2       1-2       2-3       open      1-2       
486DX/DX2                            3-4                                               


CPU             W35        W38       W40       W41       W43       W44       W45       

486SX           open       3-4       4-5       3-4       1-2       open      open      
486DX/DX2       open       3-4       4-5       3-4       1-2       open      open      
486SL-series    1-2        3-4       4-5       3-4       1-2       open      open      
Intel           2-3        3-4       4-5       1-2       1-2       open      open      
Write-Back                                     3-4                                     
Enhanced                                                                               

486DX2                                                                                 
486DX4          open       3-4       4-5       3-4       1-2       open      open      
Pentium         open       2-3       1-2       3-4       1-2       open      open      
Overdrive                                                                              
AMD 486DX/DX2   open       1-2       4-5       open      1-2       close     1-2       
                           3-4                                                         
AMD DXL4        open       1-2       4-5       open      1-2       close     open      
                           3-4                                                         
Cyrix           open       3-4       2-3       2-3       2-3       open      open      
486DX/DX2                                                                              

Note: If you are using a 3.3V or 4.0V processor, you will need

to install a special Power Module.

CPU Speed


Jumper                     25Mhz              33Mhz (default)    40Mhz             
W26                        open               open               close             
W27                        open               close              open              


External Cache

Jumper Function             Setting     

W39    128K                 1-2 & 3-4   
       256K                 2-3 & 4-5   

W42    128K                 open        
       256K                 close       


IDE Controller

Jumper Function                 Setting 

W28    Enable                   1-2     
       Disable                  2-3     


I/O Controller

Jumper Function                 Setting 

W11    Enable                   open    
       Disable                  close   



Game Port

Jumper Function                 Setting 

W2     Enable                   close   
       Disable                  open    


Parallel Port IRQ Selection

Jumper Function                 Setting 

W5     IRQ7                     1-2     
       IRQ5                     2-3     


ECP/EPP Mode DMA Selection

Jumper   none         DMA1      DMA3     
         (default)                       
W6       open         1-2       2-3      
W10      open         1-2       2-3      


Video Selection

Jumper Function                 Setting 

W1     Color                    close   
       Mono                     open    


VGA Controller Selection

Jumper Function                 Setting 

W14    On-board Enable          open    
       Disable                  close   


Enabling the VGA Feature Connector

Jumper Function               Setting   

W15    Enable                 open      
       Disable                close     


On-Board Sound Controller

Jumper Function               Setting   

W4     Enable                 open      
       Disable                close     


Sound Controller Address Selection

Jumper Function               Setting   

W3     Address 240            1-2       
       Address 220            2-3       


Sound Controller IRQ Selection

Jumper Function               Setting   

W7     IRQ5 (default)         1-2       
       IRQ9                   2-3       


Sound Controller DRQ Selection

Jumper       DRQ0   DRQ1    DRQ3   None   

W8           1-2    2-3     1-2    2-3    
W9           2-3    1-2     1-2    2-3    


Buzzer Selection

Jumper Function               Setting   

W20    Enable                 close     
       Disable                open      


BIOS Operation Selection

Jumper Function               Setting   

W18    Write protected        open      
       (default)                   
       Programmable           closed    


CMOS Reset Jumper

Jumper Function               Setting   

W25    Normal (default)       1-2       
       Reset CMOS             2-3       


Reserved Jumpers

Jumper Function              Setting    

W13    Reserved              1-2        

W17    Reserved              open       

W19    Reserved              1-2 & 3-4  

W21    Standard 5V DRAM      open       
       Micron 12V DRAM       close      

W29    Reserved              2-3        


Case and Peripheral Connections

Jumper    Function             Setting               

J15       VL IDE Connector     Primary               

J16       ISA IDE Connector    Secondary             

J17       Floppy Connector                           

J2        VGA Connector                              

J12       Parallel Port        Can be disabled in    
          Connector            CMOS                  

J5        Serial Port (Com1)   Can be disabled in    
                               CMOS                  

J7        Serial Port (Com2)   Can be disabled in    
                               CMOS                  
J1        Game Port                                  

J4        PS/2 Keyboard                              

J3        PS/2 Mouse                                 

J10       LAN Connector        Contact Micronics to order

J11       Modem Connector      Contact Micronics to order                 

J14 & J18 Power Supply Connectors                                 

SPKR      Speaker              Sound Controller      

Line Out  Line Level Output    Sound Controller      

Line In   Line Level Input     Sound Controller      

MIC In    Microphone Input     Sound Controller      

J8        Audio Connector      Connect to CD-ROM     

J20       Speaker Connector    1-Speaker; 2-N/C;     
                               3-Ground; 4-5V DC     
J22       Turbo LED            1-5V DC; 2-Ground     

J23       Turbo Switch                               

J24       Reset                                      

W36       HD LED                                     

J19       Keylock/ Power LED   1-Power; 2-N/C;       
                               3-Ground; 4-5V DC     

J21       Power Module Cnnector