
Plattenparameter / Jumperbelegung ALPS DR311C

Daisy-chain
                               
                             Single             2 Drive
                                            Master    Slave
                    C/D        S              S         O
                    ACT        S            Note 1    Note 1
                    DSP        O              S         O
                    HSP        O              O       Note 2


Note 1) In a two drive system, it is possible to light LED with both drive's 
        Status. In such case, the short pin "ACT"
        on the PCB of both drive should be shortet.

Note 2) If this drive is connected to master drive that requires
        the slave present signal supplied from this drive via
        the interface signal LED CHAIN, then this drive's short 
        pin HSP should be shorted.

Drive Configuration

        The drive configuration (number of drive cylinders, heads
        and sectors) at power on can be selected by arranging the
        short pin DC.
        And number of heads and sectors can be set freely by
        "SET PARAMETERS" command (91H). So it is possible to emulate
        512 bytes x 17 sectors per track system.

        The host must issue Set Parameters command after power and reset.

        DC  Cylinder  Head  Sector   Remarks
        
        O   527       8     49
        S   732       8     35        Note 1
        
                             O=short S=short


Selective Functions

        When rearranging the short pin block on the PCB, various
        types of the functions can be selected as shon below.

                           SPM Syncronisation
        Power Save           Power Save
                                  Daisy-chain
                                               
        MS2  MS1  MS0  DC  SYN  MS3  HSP  DSP  ACT  C/D
        
         O    O    O    O   O    O    O    O    O    O
         O    O    O    O   O    O    O    O    O    O
        
                        
                     Drive 
                     Configuration
                          
MFG

OS

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