
    ͻ
      DATA TECHNOLOGY CORP.                                   DTC-7287     
    ͹
                                                                           
           J5                       J4 J3 J2 J1                            
        Ŀ       
         ....                      1: 1: 1: 1:         W4               
                                   :: :: :: ::         ::               
                                   :: :: :: ::         W7               
                              ..         :: ::  W5 W2                   
                              W6         :: ::   :::    W9 W8           
                                                  |      :::            
                                                 W3       |             
        Ŀ       ڿ         W10ٺ          
                                                   
       INTERFACE:  ISA(AT)->ST412(RLL)                                     
       CONTROLS:   2 Floppy drives (360K, 720K, 1.2M, 1.44M)               
                   2 Hard Drives                                           
                                                                           
      W2,W3: Port Address Selection                                        
            *1F0-1F7, 3F0-3F7 (Primary Address): (no Jumpers)              
             170-177, 370-377 (Secondary Address: W2, W3 Jumpered          
                                                                           
      W4: Floppy Drive Transfer Rate              J1: Floppy               
          250KHz: W4 Jumpered                     J2: HD Control           
         *500KHz: (no Jumper)                     J3: HD0 Data             
                                                  J4: HD1 Data             
      W5: Drive Select Mode Type                  J5: LED                  
         *Hardware Select Mode: W5 Jumpered                                
          Firmware Select Mode: (no Jumper)                                
                                                                           
      W6: Auto-Deselect Mode                                               
         *Auto-Deselect Mode Enabled: W6 Jumpered                          
          Auto-Deselect Mode Disabled: (no Jumper)                         
                                                                           
      W7: Floppy Precompensation Selection                                 
          Precompensation at 125nSec: W7 Jumpered                          
         *Precompensation Scaled/Freq: (no Jumper)...(125nS@500KHz,        
                                                      208nS@300KHz,        
      * Default Settings                              250nS@250KHz.)       
                                                                           
      W8: Reserved Jumper... MUST be installed for the controller to       
          opperate correctly.                                              
                                                                           
      W9: BIOS Address (16KB)                                              
          D800->DC00: W9 Jumpered                                          
         *C800->CC00: (no jumper)                                          
                                                                           
      W10: BIOS Enable                                                     
          *Enable on-board BIOS: W10 Jumpered                              
           Disable on-board BIOS: (no jumper)                              
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
    ͼ

    ͻ
     DTC-7287                                                      Page 2  
    ͹
                                                                           
    Ŀ ADDITIONAL INFO Ķ
                                                                           
     The DTC7280 is a 1:1 interleave RLL controller.  It will run at zero  
     wait states up to a bus speed of 16MHz.   The 7280 does not have an   
     embedded Low Level Format routine, and requires The IBM AT Advanced   
     Diagnostics, or similar 3rd party program for Low Level Formatting.   
     The 7280 is OS/2 compatible.                                          
                                                                           
    Ŀ SETUP NOTES Ķ
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
    ͼ
