UltraStor 12f Jumper Definition

 ULTRA 12F DEFAULT JUMPERS
   
 
               DEFAULT JUMPER SETTINGS               
                                                     
 
   JUMPER NUMBER                     ULTRA 12F       
 
   Cache Enable                   JP4     No Jumper  
   32KB Cache RAM                 JP5     1-2        
                                  JP6     1-2        
   Factory Use                    JP7     1-2        
   BIOS Address (C800:0)          JP10    5-6        
   Floppy Configuration           JP11    No Jumper  
   Hard Disk Primary Address      JP12    No Jumper  
   Enable Floppy Controller       JP17    Jumper     
   IRQ 14/15 Select               JP20    2-3        


  
  
  ULTRA 12F JUMPER DEFINITION

  JUMPER NUMBER                   DESCRIPTION                       
                                                                    
  JP3         IN:         Factory use only.                         
  JP4        1-2:         Reserved.                                 
             3-4 IN:      Cache disabled.                           
                 OUT:     Cache enabled.                            
                                                                    
  JP10                    BIOS address setting:                     
                          1-2     3-4     5-6     BIOS Address      
                          ---     ---     ---     -------------     
                          OUT     OUT     OUT     Disabled BIOS     
                          OUT     OUT     IN      C800:0            
                          OUT     IN      OUT     CC00:0            
                          OUT     IN      IN      D000:0            
                          IN      OUT     OUT     D400:0            
                          IN      OUT     IN      D800:0            
                          IN      IN      OUT     DC00:0            
                          IN      IN      IN      Disable BIOS      
                                                                    
    NOTE: Primary port addresses must use C800, D000, or D800.      
          Secondary port addresses must use CC00, D400, or DC00.    
          JP12 selects primary or secondary port.                   
                                                                    
  JP11                  Configure floppy Controller                 
                                                                    
    1-2    IN:   Supports 3rd floppy drive w/ single twisted cable. 
                 Note: The drive should be jumpered as DS4.         
          OUT:   Supports 3rd floppy drive w/ double twisted cable. 
                 Note: The drive should be jumpered as DS2.         
    3-4    IN:   Drive 1 is configured for 3.5" PS/2 or equivalent. 
          OUT:   Drive 1 is configured for AT type 3.5" or 5.25".   
    5-6    IN:   Drive 0 is configured for 3.5" PS/2 or equivelent. 
          OUT:   Drive 0 is configured for AT type 3.5" or 5.25".   
    7-8    IN:   Floppy secondary I/O port address (370-377).       
          OUT:   Floppy primary I/O port address (3F0-3F7).         
    9-10   IN:   Dual speed floppy drive support.                   
          OUT:   Single speed floppy drive suppoet.                 
   11-12   IN:   Precompensation is fixed @ 125ns for all data rates
          OUT:   Precompensation varies according to to floppy data 
                 250, 300, & 500KHZ have 250ns, 208ns, & 125ns      
                                                                    
  JP12     IN:   Hard disk secondary I/O port address (170-177)     
          OUT:   Hard disk primary I/O port address (1F0-1F7)       
                                                                    
  JP17     IN:   Enable floppy controller.                          
          OUT:   Disable floppy controller.                         
                                                                    
  JP20    1-2:   IRQ 15 select.                                     
          2-3:   IRQ 14 select.